The Grand Lac de Clairvaux is a natural Jura lake prized for its remarkably shallow, rapidly warming water — 25°C by midsummer — and its Blue Flag certification. The main beach offers a large sandy area, a three-level diving platform (3m, 5m, 7.5m), supervised swimming, and a snack bar. The sandy, gently sloping lake floor makes this one of the region's best choices for families with young children.
Clairvaux-les-Lacs sits at the heart of the Jura lake district, cradled between the Grand Lac and the Petit Lac (connected by a channel). The Plage du Grand Lac is the village's central attraction each summer, attracting families from across Franche-Comté and from the German and Swiss regions nearby.
The beach's most distinctive feature is its water quality: the lake is shallow enough to warm rapidly under the summer sun, reaching 25°C by late July — significantly warmer than many Jura lakes — while remaining crystal-clear. The sandy lake floor shelves very gradually, meaning the swimming zone is ideal for young children and non-swimmers who need shallow, reassuring conditions.
For more adventurous visitors, a three-level diving platform stands in the lake at 3 metres, 5 metres, and 7.5 metres height. The 7.5-metre platform draws teenagers and adults willing to commit to the drop, and is a well-known landmark of the Clairvaux beach experience. Swimming is supervised by lifeguards throughout July and August.
The beach holds a Blue Flag certification, an internationally recognised environmental and tourism quality award covering water quality, environmental management, and visitor services. It also carries the Handiplage label: a specialised accessible beach chair is available on-site, allowing visitors with limited mobility to enter the water independently. Facilities include flush toilets, changing cabins, cold showers, and a snack bar serving drinks, ice cream, and light meals. A paid car park (credit card only, no campervans admitted) adjoins the beach.
The village of Clairvaux-les-Lacs has a small commercial centre with restaurants, a bakery, and accommodation options including the Camping du Fayolan, which sits directly on the lake and offers water access for guests. The lakeside road from the village to the beach is flat and walkable from the main campsite and hotels.
Amenities
- supervised swimming (July–August)
- Blue Flag certified beach
- Handiplage accessible beach chair
- three-level diving platform (3m, 5m, 7.5m)
- snack bar (ice cream, drinks, light meals)
- flush toilets
- cold showers
- changing cabins
- paid car park (card only, no campervans)
Good to know
- Best for
- families, children, swimmers, thrill-seekers
- Water
- Clear natural freshwater lake; sandy gradually sloping floor ideal for children; water temperature reaches 25°C by late July; no current; relatively shallow compared to other Jura lakes; Blue Flag water quality certification
- Facilities
- lifeguards (July–August), accessible beach chair (Handiplage label), changing cabins, public toilets, cold showers, snack bar, car park (paid, card only)
Location
Route de la Plage, 39130 Clairvaux-les-Lacs
46.5738, 5.7406 View on map
Highlights
- Water temperature reaches 25°C by midsummer — among the warmest of any Jura lake beach
- Blue Flag and Handiplage dual certification: high water quality and accessible beach chair for mobility-limited visitors
- Iconic three-level diving platform at 3m, 5m, and 7.5m — a Jura summer rite of passage
- Gently sloping sandy lake floor makes this the ideal choice for young children and non-swimmers
- Charming village setting with bakery, restaurants, and camping directly on the lake shore
Tips for visiting
- The car park accepts card only — bring a bank card; cash machines are not available at the beach entrance
- The 7.5-metre platform is popular: expect queues of teenagers on busy July afternoons; morning visits are less congested
- Camping du Fayolan guests have direct lake access from the campsite — a good option for families who want to swim across multiple days
- Water clarity and temperature peak in late July and early August; June offers near-identical conditions with fewer visitors
- The snack bar closes earlier than the beach — bring provisions if planning to stay until closing time
When to visit
Late July and early August for maximum water temperature (25°C) and full facilities. June offers clear water and smaller crowds before peak season. September swimming is possible on warm days but lifeguard supervision ends in August.
Accessibility
Handiplage certified: a beach wheelchair is available on-site for visitors with reduced mobility to enter the water. The main beach area has a flat sandy approach. The paid car park is adjacent to the beach with a short flat path to the waterfront. Campervans are excluded from the beach car park.
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Frequently asked questions
Is the Plage du Grand Lac de Clairvaux suitable for young children?
Yes — the lake floor is sandy and shelves very gradually, creating shallow, calm conditions well-suited to young children. Lifeguards supervise the swimming zone throughout July and August.
What is the Handiplage label at Clairvaux?
Handiplage is a French certification for beaches that provide specialised equipment enabling visitors with reduced mobility to access the water independently. The Plage du Grand Lac has a beach wheelchair available on-site for this purpose.
Is the diving platform safe to use?
The platform has three levels at 3m, 5m, and 7.5m. It is maintained by the beach operators and open to visitors during supervised hours. Non-swimmers and young children should stay in the main shallow swimming zone rather than approaching the platform area.
Is there accommodation near the beach?
Camping du Fayolan sits directly on the lake and has its own water access for guests. The village of Clairvaux-les-Lacs also has small hotels and gîtes within easy walking distance of the beach.