Ultimate Guide to a Weekend in the Baie de Somme (France) - Best Things to Do

The Baie de Somme has something for everyone — pretty villages, beaches, wildlife, and more. Whether you’re staying a weekend or a little longer, this guide will help you discover the best places to visit.

You’ve probably already heard of the Bay of San Francisco, Mont Saint-Michel Bay, or even Ha Long Bay. But have you heard of the Baie de Somme? Maybe not — yet it’s also part of the “Most Beautiful Bays in the World” club. Found in northern France, this is a peaceful place where the sea meets wide sandbanks, salt marshes, and endless skies. Being from Picardie, I (Thomas) feel proud of this area and all it has to offer! From its changing light to its rich wildlife — including France’s largest seal colony — the Baie de Somme feels wild, calm, and beautiful all at the same time.

In this guide, we share our favourite places to visit in the Baie de Somme and along the Picardie coast, all located within an hour’s reach of each other. You’ll find charming fishing villages, wide sandy dunes, wild beaches, and quiet nature spots — plus opportunities to see seals and migratory birds in their natural habitat. There’s enough here to fill a full weekend, or even three to four days if you have more time. Whether you’re planning a quick break or a longer stay, the Baie de Somme is the perfect place to slow down, enjoy the sea air, and take in the views — all just a few hours from Paris or Lille.

INTRODUCTION

The Baie de Somme is located in the Hauts-de-France region, formerly known as Picardie, nestled between Île-de-France (the region around Paris) and the English Channel. Less than two hours from Paris, this bay is a vast wetland area stretching over 70 kilometers, offering breathtaking landscapes shaped by tides and winds. Its location near the English Channel has made it a key site in history, with many invasions and battles over the centuries. Despite this turbulent past, the Baie de Somme has kept its charm, offering visitors a mix of beautiful villages, historic landmarks, and wild, natural landscapes.

Recognized as a member of the “Club of the Most Beautiful Bays in the World” and listed among the 15 Grands Sites de France, the Baie de Somme boasts remarkable natural beauty and cultural heritage. Its combination of wide-open skies, tidal flats, and medieval villages makes it one of the region’s most stunning spots. The ever-changing tides and seasonal light provide endless inspiration for nature lovers and photographers.

GETTING THERE

The Baie de Somme is easily accessible by regional TER trains. From Paris Gare du Nord, direct trains reach Noyelles-sur-Mer in about two hours, with several departures daily. From there, you can continue to nearby towns like Saint-Valery-sur-Somme, Le Crotoy, and Cayeux-sur-Mer via local buses or the historic steam train, Chemin de Fer de la Baie de Somme. If you want to ride the steam train, the Pack TER Chemin de Fer de la Baie de Somme includes a round-trip TER ticket (valid for 48 hours) and unlimited steam train journeys between the main towns, costing around 30.50 EUR for adults in 2025, and is available on the SNCF Connect website. For the southern coast, Mers-les-Bains and Le Tréport are served by TER trains from Paris (via Abbeville or Beauvais) in roughly 2.5 to 3 hours, with stations within walking distance of the seafront. Standard one-way fares from Paris to Noyelles-sur-Mer start around 20 EUR when booked in advance.

Buses run across the Baie de Somme region, allowing travel without a car, though they are not always the fastest or most convenient option. Key routes include Bus 706, which connects Noyelles-sur-Mer, Saint-Valery-sur-Somme, Cayeux-sur-Mer, and Abbeville, and Bus 709, which serves Le Crotoy and nearby villages. In summer, Bus 706 runs more frequently to meet tourist demand, with departures roughly every 40 minutes on weekdays, starting early in the morning and running into early afternoon. Service can be less frequent on weekends and off-season, so it’s best to check schedules before you travel. Local buses also connect Mers-les-Bains, Le Tréport, and nearby villages on the southern coast, linking with train stations and other towns. Tickets are usually affordable and can be purchased on board.

Driving is the most convenient way to explore the Baie de Somme, especially if you’re visiting for a weekend or want the freedom to see more at your own pace. From Paris, it’s about a 2-hour drive via the A16 motorway. Most towns — like Saint-Valery-sur-Somme, Le Crotoy, and Cayeux-sur-Mer — have parking, though spots can fill up during busy times. Having a car lets you easily reach quieter beaches, nature reserves, and smaller villages that are harder to access by public transport. Be aware that some town centers have pedestrian zones or parking rules, so always look for signs and use designated parking areas to avoid fines.

PRACTICAL TIPS

The best time to visit the Baie de Somme is between April and October, when the weather is generally mild and enjoyable. Summer, from June to August, offers the warmest temperatures and the longest days, perfect for beach outings, hikes, and other outdoor activities. However, it’s also the busiest time of year, with popular towns like Saint-Valéry-sur-Somme and Le Crotoy attracting more visitors. If you prefer a quieter experience with still pleasant weather, late spring (April to May) or early autumn (September to October) are great options. During these shoulder seasons, you can enjoy beautiful landscapes, active wildlife, and fewer crowds, making your visit more relaxed.

This blog focuses on a weekend trip to the Baie de Somme, perfect for visiting the core highlights like Le Crotoy, Saint-Valéry-sur-Somme, spotting the seals at Le Hourdel, and exploring the Parc du Marquenterre. With just two days, you can see the main sights and get a good feel for the area. If you have more time, consider staying three days or longer to explore further. You could visit the southern part of the bay, known for its dramatic cliffs and charming Belle Époque towns, or spend a relaxing day on the beaches in the northern part. Taking your time means you can enjoy a slower pace and discover more hidden gems.

When visiting the Baie de Somme, staying in Saint-Valéry-sur-Somme or Le Crotoy is your best bet. Both towns are right in the middle of the area, with plenty of shops, cafés, and restaurants within walking distance. They’re also easy to get to by train or bus, which is perfect if you’re not driving. Whether you’re on a budget or just want something cozy, you’ll find plenty of small hotels, guesthouses, and holiday rentals to choose from. Staying here makes it easy to explore the bay and unwind after a day of sightseeing.

For those who love hiking and want to explore the Baie de Somme’s stunning coastline, the Sentier du Littoral is a must. This coastal path stretches about 50 kilometers, running from Le Crotoy to Mers-les-Bains. Along the way, you’ll walk past wild dunes, dramatic chalk cliffs, cute harbours, and charming seaside towns. The trail offers a variety of landscapes and breathtaking views, making it perfect for both day hikes and longer multi-day treks. You can choose to walk shorter sections or take on longer stretches if you have more time. The path is well-marked and generally easy to follow, but sturdy shoes and a good map or GPS app are recommended. In short, hiking the Sentier du Littoral is a great way to experience the natural beauty of the Baie de Somme region.

HARBOURS & VILLAGES OF THE BAIE DE SOMME

The Baie de Somme is home to three main harbours, each with its own unique charm. There is Saint-Valéry-sur-Somme, the medieval town with cobbled streets and rich history; Le Crotoy, known for its pretty waterfront and lively atmosphere; and Le Hourdel, the smallest and quietest of the three, famous for seal watching. Exploring these villages is a great way to experience the bay’s character.

The first harbour we want to share in this post is Saint-Valéry-sur-Somme. Located at the estuary of the Somme River and overlooking the Baie de Somme, Saint-Valéry-sur-Somme is the perfect mix of medieval charm, natural beauty, and traditional fishing village life. Saint-Valéry is officialy one of Les Plus Beaux Villages de France and part of the “Most Beautiful Detours” network. With its colorful streets, lively harbor, and incredible bay views, it’s a place Rafael and I always love to visit when we’re in northern France.

The town is divided into two areas: the ville basse, where you’ll find the harbor and the Sailors’ district, and the ville haute, home to the fortified medieval old town. Strolling through the streets of the ville basse, especially along Rue des Moulins and Rue des Pilotes in the colourful Sailors’ district, is a real treat for photography lovers. Don’t miss the Calvaire des Marins, which offers one of the best views over the rooftops and bay. The medieval part holds most of Saint-Valéry’s history, including the ancient Porte de Nevers and the Sailors’ Chapel — a 10-minute uphill walk worth taking for its views. The town has welcomed notable figures, including Joan of Arc, who passed through in late 1430 after her capture by the English, on her way to Rouen where she was later executed. Another important figure is William the Conqueror, who stayed here in 1066 before sailing to England to claim the throne.

Saint-Valéry’s maritime history is just as interesting. Its harbor, both maritime and river-based, links the Baie de Somme and the Somme Canal. From a Roman military port to a busy 19th-century trading hub, the harbor has long been central to town life. Today, you can enjoy a stroll along the quays, enjoy the charming atmosphere, and indulge in local treats. Don’t miss Watterlot Pâtisserie Boulangerie, famous for its gâteau battu – a rich golden brioche from Picardie, or have a meal at Relais Guillaume de Normandy for local cuisine.

| See: Medieval Town – Sailor's district – Sailors' Chapel |

| Eat: Watterlot Pâtisserie Boulangerie – Relais Guillaume de Normandy |

 | For more information about Saint-Valéry-sur-Somme, check our post here |

Here’s a unique experience you shouldn’t miss during a weekend in the Baie de Somme: a ride on the Chemin de fer de la Baie de Somme, a historic railway that has been welcoming visitors since 1887. Originally built to boost tourism along the Picardy coast, this 27-kilometer track connects the towns of Le Crotoy, Saint-Valéry-sur-Somme, and Cayeux-sur-Mer — just like it did over a century ago. Step aboard one of the country’s most beautiful vintage trains and travel at a leisurely pace through the bay’s fields and marshes.

Along the way, you’ll spot wetlands and salt meadows where sheep graze peacefully, and a variety of wildlife including birds, Henson horses, Highland cows, and storks. The train’s beautifully restored Belle Époque wooden carriages and steam locomotive are maintained by a local association, making this nostalgic journey one of the region’s top attractions, drawing nearly 200,000 visitors every year. It’s a charming way to explore the Baie de Somme while soaking in the history of early 20th-century travel.

| Timetable |

from 9.30 a.m. to 6.55 p.m.

(from mid-February to mid-November)

| Admission |

14.50 EUR (one way) - 18.50 EUR (roundtrip)

The second harbour featured in this blog is Le Crotoy, a charming seaside town nestled on the edge of the Baie de Somme. Known as the main seaside resort of the Baie de Somme, Le Crotoy stands out for its wide , south-facing sandy beach — a rare find in northern France — that soaks up the sun throughout the day. Once a bustling fishing port in the 18th century, the town still keeps its maritime traditions alive, with boats regularly heading out to catch shrimp. The tides here are among the most dramatic in the world, with water levels rising and falling by more than 10 meters during the highest tides.

Le Crotoy has also drawn many famous visitors over the years, adding to its charm and cultural heritage. Jules Verne lived here from 1865 to 1871, inspired by the fresh air and peaceful surroundings to begin writing Twenty Thousand Leagues Under the Sea. The town also welcomed artists such as Toulouse-Lautrec and Alfred Sisley, who were also captivated by its beauty. Today, you can admire its remarkable villas, including the Manoir des Tourelles, which now operates as a hotel and restaurant.

A visit to Le Crotoy wouldn’t be complete without a stroll along the seafront, with its wooden boardwalk, beach huts, and views stretching all the way to the marina. The town also has charming little streets filled with fishermen’s houses and elegant holiday homes built during the golden age of seaside tourism. For food lovers, Boulangerie Victor Florent is a must for delicious waffles and creamy flan, while Les Tourelles restaurant provides a fine dining experience. With its sunny beaches, maritime history, stunning architecture, and natural charm, Le Crotoy is truly one of the Baie de Somme’s gems.

| See: Seafront promenade – Beach Huts |

| Eat: Boulangerie Victor Florent – Les Tourelles |

The third and final harbour of the Baie de Somme is Le Hourdel, a peaceful spot located at the tip of a small peninsula surrounded by a protected natural landscape. Its modest harbour is still home to a handful of fishing boats, with a few trawlers heading out every day to catch shrimp, though fishing has slowed since the 1980s. Fresh shrimp, mackerel, and flatfish continue to make their way to local tables, preserving a long-standing maritime tradition. The peaceful setting of Le Hourdel, with its wide pebble beach and the sound of waves, makes it a perfect place to enjoy nature and relax.

But what truly sets Le Hourdel apart is its thriving seal colony, making it a top destination for wildlife enthusiasts. The sandbanks host two species: the smaller harbor seal (1.2-2 m, up to 150 kg, light grey/beige coat) and the larger grey seal (1.7-3 m, 150-300 kg, dark grey with black spots). Protected since 1972, several hundred harbor seals now live in the Baie de Somme year-round, joined by grey seals from April to October. The best time to spot them is about three hours before low tide and two and a half hours after, when they rest on the exposed sandbanks. During the high season, volunteers from a local association set up binoculars on the beach so visitors can see the seals from a distance. You can also take a boat excursion for a different perspective. Whether from the shore or the water, Le Hourdel offers a rare chance to witness marine wildlife in one of France’s most pristine coastal environments.

| See: Seal colony – Pebble beach – Harbour |

| Eat: La Pointe du Hourdel |

NORTHERN SIDE - BEACHES & DUNES

The northern side of the Baie de Somme is a paradise of wild dunes, endless beaches, and unspoiled nature. Here, you’ll find the Parc du Marquenterre, a haven for birdlife, as well as the wide sandy beaches of Quend-Plage-les-Pins and Fort-Mahon — perfect for sunbathing, walking, and seaside activities.

The Parc du Marquenterre, near Le Crotoy, is the Baie de Somme's most famous nature reserve, a must-visit for nature lovers and birdwatchers. This 200-hectare park is a mix of marshes, dunes, and forests, offering a peaceful sanctuary for wildlife. Known as the most famous spot in the Baie de Somme to observe birds, it is home to more than 300 species, both local and migratory. The park serves as an important resting point for birds traveling across Europe, making it a paradise for birdwatching and photography.

The area wasn’t always a bird reserve. In the 1950s, a man named Michel Jeanson worked with Dutch engineers to turn this area into a polder — land taken back from the sea — so he could grow tulips and hyacinths. For a while, flower farming went well, but by the 1970s it became less profitable because of competition from the Netherlands. Wanting to protect the land and give it a new purpose, Michel looked at bird parks in Belgium and the UK for ideas. He noticed that many birds were already visiting the area, so he decided to turn it into a safe place for them. In 1973, the Parc du Marquenterre officially opened its doors to the public.

Today, the park offers three walking trails, ranging from short 45-minute loops to longer walks of up to 2 hours. Visitors can also join guided tours with expert naturalists who share insights about the birds and their habitat. Storks, herons, and even rare migratory species can often be spotted from the park’s observation points. Whether you’re an avid birdwatcher or simply want to enjoy a quiet moment surrounded by nature, the Parc du Marquenterre is an unforgettable stop during a trip to the Baie de Somme.

| Timetable |

from 10 a.m. to 7 p.m. from January to November

| Admission - 12 EUR |

Quend-Plage-les-Pins is one of the most popular seaside spots in the Baie de Somme, famous for its wide sandy beaches and dunes. It’s a great place to relax in the summer, whether you want to sunbathe, swim, or just enjoy the fresh sea air. If you’re only in the area for a weekend and prefer a busy itinerary, Quend might be one place to skip — unless you have an extra day to spend and want to enjoy its natural beauty and outdoor activities.

One highlight in Quend is the Dune du Royon, a peaceful 4-km hiking loop that takes about an hour and a half to complete. The trail winds through sand dunes covered in marram grass, which helps hold the dunes together with its strong roots. Pine trees planted in the mid-20th century add to the landscape, helping to stabilize the dunes and creating a mix of forest and seaside views. It’s a perfect spot for a quiet walk in nature, with plenty of chances to see local birds and enjoy fresh air.

For those who love being active, Quend also offers a 24 km bike route called the Circuit du Tadorne, which takes you through beautiful coastal scenery. The wide beaches are popular for land sailing (char à voile), a fun way to glide across the sand powered by the wind. And don’t forget the local seafood — Quend-Plage-les-Pins is home to 14 mussel farms that produce moules de bouchot, a tasty specialty grown on poles in the sea.

| See: Dune du Royon hike – Wide sandy beaches – Pine forest trails |

| Eat: Les Chouettes Saveurs – Le Lambi |

SOUTHERN SIDE - CLIFFS & BELLE ÉPOQUE TOWNS

The southern coast features dramatic cliffs and charming Belle Époque towns. Cayeux-sur-Mer stands out with its famous wooden beach cabins lining the long pebble beach. Nearby, you’ll find the rugged shores of Ault and the elegant seaside resorts of Mers-les-Bains and Le Tréport. This area offers a lovely mix of stunning views, historic architecture, and classic seaside charm.

If you’re visiting the Baie de Somme for a weekend, Cayeux-sur-Mer is definitely worth a stop. The town’s name comes from the Picard dialect word cayeux, meaning pebbles — a nod to its wide pebble beach that sets it apart from the sandy shores found elsewhere in the region. This unique coastline makes Cayeux a peaceful spot for seaside walks, where you can enjoy the soothing sound of waves rolling over the stones. For those looking for something more active, Cayeux is also well known for kitesurfing, making it a great place to try the sport or simply watch the action.

Cayeux-sur-Mer has been a popular seaside resort since the 19th century, drawing visitors looking for fresh air and a relaxing coastal escape. One of its most famous features is the wooden boardwalk, stretching nearly 2.5 kilometers along the beach. Lined with over 500 colorful beach cabins, this boardwalk holds the record for the longest in Europe. It’s the perfect place for a leisurely stroll at any time — whether you’re enjoying a peaceful morning walk with the waves nearby or watching the sunset paint the sky. The cabins add a cheerful splash of color and history, many passed down through generations. This charming seaside promenade is truly one of Cayeux’s highlights and a wonderful way to experience the coastline.

| See: Wooden boardwalk – Colorful beach cabins – Pebble beach |

 | Eat: Le Petit Baigneur – La Brasserie de Fernand |

Ault is a small town that marks the start of the famous white chalk cliffs along the southern edge of the Baie de Somme. These cliffs, formed around 65 million years ago, rise up to 80 meters high and offer stunning views over the sea, making Ault feel like a natural balcony overlooking the coast. At the heart of the town stands the Church of Saint-Pierre, built in a distinctive checkerboard pattern of white stones and cut flints typical of the region. From various spots around Ault, you can enjoy stunning views of the cliffs and the Baie de Somme below; on clear days, the tip of Le Hourdel is visible in the distance.

Nearby, the Hâble d’Ault marsh is a protected nature reserve known for its incredible variety of wild plants and animals. More than 270 species of migratory birds have been recorded here since the late 19th century, making it a paradise for birdwatchers and nature lovers. The Réserve d’Avifaune du Hâble d’Ault offers a lovely hiking route of about 5 kilometers (roughly 2 hours), where you can explore this rich natural habitat and enjoy peaceful walks among the marshes.

Just a short 3-kilometer hike from Ault lies the peaceful hamlet of Bois de Cise, nestled between two cliffs. This charming spot is known for its beautiful Anglo-Norman villas from the Belle Époque era, set against a backdrop of woodland and seaside views. The hike from Ault to Bois de Cise is part of the Sentier du Littoral, a coastal trail that showcases the best of the area’s dramatic cliffs and natural beauty. From Bois de Cise, you can continue along the same coastal path toward Mers-les-Bains, a 5-kilometer walk (about 1.5 to 2 hours) offering stunning sea views and fresh coastal air.

| See: Church of Saint-Pierre – White chalk cliffs – Hâble d’Ault marsh – Bois de Cise hike |

| Eat: Brasserie Chez Virgile – La Salicorne |

Located along the English Channel coast, Mers-les-Bains is a charming town in the Baie de Somme area and one of three sister towns, along with Eu and Le Tréport. The town features a long pebbly beach dotted with more than 600 iconic white and colourful beach cabins, creating a charming seaside atmosphere. As the last seaside resort in Picardie before the neighbouring Normandy coast, Mers-les-Bains offers a peaceful retreat with a mix of natural beauty and small-town charm.

But what truly sets Mers-les-Bains apart is its rich architectural heritage, with around 400 Belle Époque villas built in the late 19th century. The town evolved from a modest fishing village into an elegant seaside resort, attracting wealthy visitors and famous figures like Victor Hugo and Gustave Eiffel. This transformation was driven by the arrival of the train line from Paris in 1872, making the coast reachable in about three hours. At the same time, seaside holidays became popular, especially for those seeking the health benefits of sea air. Mers-les-Bains quickly grew with new villas, a spa, and a casino, shaping its identity as a stylish resort. Today, the colourful villas still line its streets, offering visitors a unique mix of history and coastal beauty.

| See: Belle-Époque villas – Seafront promenade – Pebble beach – Views along the cliffs toward Le Tréport |

 | For more information about Mers-les-Bains, check our post here |

Although Le Tréport is not technically part of the Baie de Somme, we've included it here because of its close location to Mers-les-Bains. The two towns are actually linked by a scenic path that you can easily walk, so you can visit both in one trip. This charming seaside town in Normandy is known for its white chalk cliffs that rise high above the sea and offer amazing views all year round. You can climb 365 steps to the top or take a free funicular ride if you want an easier way up. From the top, you’ll see panoramic views of the English Channel, the harbour, and the beautiful coastline. Le Tréport also has a long pebbly beach with classic beach cabins, perfect for a relaxing walk or some quiet time by the water.

Historically, Le Tréport was known for its elegant villas built in the 19th century, much like those in its neighbouring sister town, Mers-les-Bains. These villas reflected the town’s popularity as a seaside resort. Unfortunately, many of them were destroyed during the bombings of World War II, which changed the town’s architectural look. Despite this, the harbour remains lively and full of colourful fishing boats. One of the town’s highlights is its fish market, where fresh catches from local boats are sold. You can also walk until the lighthouse and visit the maritime museum to learn more about Le Tréport’s fishing heritage.

| See: Cliffs and panoramic views – Harbor and fishing port – Funicular railway |

| Eat: Le Damali –  Objectif Moules frites |

 | For more information about Le Tréport, check our post here |

FINAL THOUGHTS

The Baie de Somme is perfect for a weekend getaway where nature, history, and charming towns meet. From spotting seals at Le Hourdel and birdwatching at Parc du Marquenterre, to exploring the medieval harbours of Saint-Valery and Le Crotoy or relaxing on the beaches of Quend, there’s plenty to enjoy. Nearby towns like Mers-les-Bains and Le Tréport add even more character to the region. Whether you have one weekend or a few days, the Baie de Somme offers a peaceful escape with beautiful sights and memorable experiences. We hope this guide helps you plan your perfect trip to this stunning part of northern France.

We’d love to hear from you! If you’ve been to the Baie de Somme, what places did you enjoy the most? Or is there somewhere new you’re excited about? Share your experiences and tips in the comments below.

Tags: France