Plage du Grand Lac de Clairvaux
Bourgogne – Franche-Comté, France
Clairvaux-les-Lacs is a lake town in the Jura's first plateau, centered in the region's lake district. The town has facilities for disabled visitors and serves as the canton's administrative center.
Quick Overview
Plan Your Visit to Plage du Grand Lac de Clairvaux
The key facts before you go
About the Beach
What is Plage du Grand Lac de Clairvaux?
Plage Du Grand Lac De Clairvaux sits on the shores of a 64-hectare lake in the Jura's lake district, where the water reaches depths of 28 meters and the surrounding landscape holds secrets dating back 6,000 years. This Blue Flag inland beach serves as the recreational heart of Clairvaux-les-Lacs, a small canton capital that transforms each summer when its population quadruples with visiting swimmers, hikers, and history enthusiasts. The site carries particular archaeological significance. Neolithic dwelling remains discovered at the lake's edge make this one of Europe's most important prehistoric locations. With lifeguards on duty and facilities designed for visitors with disabilities, the beach offers supervised swimming in fresh mountain waters surrounded by the first plateau of the Jura mountains. Four campsites, hotels, and holiday rentals cluster nearby, making extended lakeside stays straightforward.
It sits alongside certified beaches along Bourgogne – Franche-Comté, part of a broader network of certified beaches throughout France certified annually by the Foundation for Environmental Education.
Planning
When to Go: Month by Month
| Month | Air Temp | Crowds |
|---|---|---|
| Jan | 2°C | Low |
| Feb | 5°C | Low |
| Mar | 7°C | Low |
| Apr | 10°C | Low |
| May | 13°C | Low |
| Jun | 18°C | Low |
| Jul | 20°C | High |
| Aug | 20°C | High |
| Sep | 16°C | Low |
| Oct | 12°C | Low |
| Nov | 7°C | Low |
| Dec | 4°C | Low |
The best time to visit Plage du Grand Lac de Clairvaux is April, May, June. Air temperatures peak around 20.2°C in summer.
How crowded does Plage du Grand Lac de Clairvaux get?When does Plage Du Grand Lac De Clairvaux see its busiest periods? The summer months transform this small Jura commune dramatically, local population quadruples as visitors fill the four campsites, hotels, and rental accommodations clustered around the twin lakes. July and August bring the highest concentrations of swimmers and sunbathers, coinciding with French school holidays and the warmest temperatures. July averages 20.2°C while August sits marginally cooler at 19.9°C, comfortable warmth rather than intense heat, which shapes the crowd character. Visitors here tend toward active recreation rather than passive sunbathing, with hiking and mountain biking trails drawing people away from the beach throughout the day. September offers a notable shift, with temperatures dropping to around 16°C average and visitor numbers declining as families return home for the school year. The lake remains swimmable for those comfortable in cooler conditions, and the beach quiets considerably. The archaeological significance of the site attracts a specific visitor segment interested in the Neolithic discoveries, though most summer crowds come primarily for swimming and camping. The presence of lifeguards during the season indicates organised supervision, suggesting the beach maintains defined operating hours with staffed periods. Winter transforms the scene entirely, with January temperatures averaging just 2.2°C. The beach effectively closes for swimming, and the quadrupled summer population contracts back to local residents.
Is Plage du Grand Lac de Clairvaux open year-round?The beach itself is accessible year-round, though staffed facilities including lifeguards typically operate only during the official season (01-07 – 31-08). The Blue Flag is displayed during the certification period only.
The Water
Swimming and Beach Life at Plage du Grand Lac de Clairvaux
Is Plage du Grand Lac de Clairvaux safe to swim?Plage du Grand Lac de Clairvaux is Blue Flag certified, which requires meeting strict bathing water standards set by the EU Bathing Water Directive. The latest official class is Excellent (2025).
Water quality
Excellent (2025)
Earlier seasons: 2024 Excellent, 2023 Excellent, 2022 Excellent.
Excellent is the top class under the EU Bathing Water Directive. Recent samples stayed inside the strictest limits for bacteria.
Source: European Environment Agency
Air temperature at Plage du Grand Lac de Clairvaux reaches 20.2°C in July. Water temperatures vary by season. Check local conditions before visiting. In winter (January), air temperatures average 2.2°C.
What is the beach like at Plage du Grand Lac de Clairvaux?What makes Plage Du Grand Lac De Clairvaux different from typical French beaches? The answer lies beneath your feet and across the water. This inland lake beach occupies a site of extraordinary historical weight, where archaeological excavations have uncovered multiple groups of Neolithic dwellings dating to approximately 4000 BC, discoveries that have positioned Clairvaux-les-Lacs as a singular prehistoric site within Europe. The Grand Lac itself spans 64 hectares with a maximum depth of 28 meters, creating substantial swimming territory quite different from shallow recreational lakes. The water quality meets Blue Flag standards, indicating regular testing and environmental management that keeps these inland waters clean enough for international certification. A second, smaller lake of 21 hectares sits nearby, adding to the aquatic character of this Jura commune. Lifeguards supervise the designated swimming area, providing the safety oversight that families and less confident swimmers appreciate. The beach includes specific facilities designed for disabled visitors, making lake access possible for those who might struggle at less accessible sites. This accessibility focus reflects modern French beach standards applied thoughtfully to an inland setting. How does the lake environment shape the swimming experience here? Unlike coastal beaches where tides and currents demand constant attention, the Grand Lac offers still freshwater conditions. The 28-meter depth means the lake maintains cooler temperatures even during summer months when July air temperatures average around 20°C, warm enough for comfortable swimming but not the Mediterranean heat that draws crowds to southern France. The setting places swimmers within view of the Jura's first plateau, with the Drouvenant valley visible from various points around the lake. A medieval tower, the sole surviving element of a castle that once commanded a promontory above this valley, punctuates the landscape, connecting casual beach visits to centuries of local history. The beach functions as part of a larger tourist infrastructure that has developed around the twin lakes. Two private campsites and two municipal campsites provide accommodation ranging from basic tent pitches to more developed options. Hotels, gîtes, and furnished tourist rentals add to the visitor capacity, explaining how this small community can absorb four times its normal population during peak summer weeks. Swimming conditions benefit from the Blue Flag certification requirements, which mandate not just water quality but also safety equipment, environmental information, and general site management. For inland waters, this certification carries particular significance, lake beaches face different challenges than coastal sites, including runoff management and ecosystem preservation in enclosed water bodies. The Grand Lac's depth creates distinct water layers, with surface temperatures warming through summer while deeper waters remain cooler. This thermal structure supports the lake ecosystem while providing swimmers with refreshing conditions even on the warmest August days when air temperatures average just under 20°C.
Plage du Grand Lac de Clairvaux sits on the Mediterranean Sea: explore all Blue Flag beaches on the Mediterranean.
Planning a trip to France? Blue Flag Beaches France , our editorial guide to certified beaches across the country.
While You're Here
Beyond Plage du Grand Lac de Clairvaux
Clairvaux-les-Lacs rewards visitors who venture beyond the waterfront. The commune's archaeological heritage represents its most distinctive attraction. Neolithic dwelling sites discovered at the lake's edge date to approximately 4000 BC, making this one of Europe's significant prehistoric locations. These discoveries have shaped the area's identity beyond typical French lake resort status. The architectural heritage includes a 12th-century church, modified over subsequent centuries but retaining its Romanesque origins. The medieval tower standing on a promontory above the Drouvenant valley represents the sole surviving element of a castle that once commanded this landscape. The viewpoint offers perspective across the valley that castle builders valued for defensive purposes. Hiking and mountain biking trails network through the surrounding Jura plateau, creating opportunities for active exploration away from the lakes. The terrain of this first Jura plateau provides varied walking conditions through landscapes shaped by both geology and centuries of human occupation. The second lake, covering 21 hectares, adds another water body to explore. Together the twin lakes define the character of this commune, which has built its tourist infrastructure around their presence while maintaining connections to much older histories preserved in the ground beneath.
Transport
Getting to Plage du Grand Lac de Clairvaux
How do I get to Plage du Grand Lac de Clairvaux by car?Plage du Grand Lac de Clairvaux is approximately 0.63 km from Clairvaux-les-Lacs. Follow local road signs to the beach. Check Google Maps or a local map for the most current directions.
What is the nearest airport to Plage du Grand Lac de Clairvaux?The nearest airport is Geneva International Airport (GVA), approximately 45.9 km away.
Can I get to Plage du Grand Lac de Clairvaux by public transport?Bus services to rural Jura communities like Clairvaux-les-Lacs typically operate on limited schedules connecting smaller villages with regional centers. Local bus networks in Bourgogne-Franche-Comté serve primarily residents rather than tourists. Visitors without cars should verify current routes and timetables through regional transport authorities before planning journeys. The nearest recorded bus stop is 679 m from the beach.
Is there a train to Plage du Grand Lac de Clairvaux?Rail connections to Clairvaux-les-Lacs require planning around the rural character of this Jura commune. The French rail network serves larger towns in the Bourgogne-Franche-Comté region, with Lons-le-Saunier serving as the likely nearest station with regular service. From there, onward transportation by local bus, taxi, or arranged pickup becomes necessary to reach the lakeside community. Travelers should check current SNCF schedules and consider that final connections to small communes often run infrequently, particularly outside peak tourist season.
Map
Find Plage du Grand Lac de Clairvaux
Open the map or get directions to the Plage du Grand Lac de Clairvaux pin. Amenity names are listed here only when OpenStreetMap has a mapped feature nearby.
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Map: OpenStreetMap (ODbL)
On the beach
Facilities at Plage du Grand Lac de Clairvaux
- Lifeguards
- Yes, during the certified season
- Wheelchair access
- Accessible site facilities and water entry
- Visual assistance
- No
- Toilets
- No
- Showers
- No
- Drinking water
- Yes
- Parking
- Available nearby (surface parking). 71 m away, a fee is charged
- Entry
- Free to enter
These details can change. Check on arrival.
Map data © OpenStreetMap contributors
Practical Details
Practical Information
| At the Beach | |
| Official Season | 01 Jul – 31 Aug |
|---|---|
| Beach Type | Sandy beach |
| Nearest supermarket | 970 m from the beach |
| Nearest bus stop | 679 m from the beach |
| Visiting Information | |
| GPS Coordinates | 46.5703°N, 5.7534°E |
| Water Quality | Excellent (2025) (EU Bathing Water Directive) |
| Blue Flag Operator | Foundation for Environmental Education (FEE), France |
Frequently Asked Questions
Plage du Grand Lac de Clairvaux FAQ
Is Plage Du Grand Lac De Clairvaux worth visiting?
Plage Du Grand Lac De Clairvaux offers a distinctive combination of Blue Flag freshwater swimming and significant archaeological heritage. The 64-hectare lake with its 28-meter depth provides substantial swimming territory, while Neolithic dwelling sites dating to 4000 BC make the area uniquely important for European prehistory. Lifeguard supervision and disabled facilities add practical value. For visitors seeking alternatives to crowded coastal beaches, this Jura lake delivers clean water, historical depth, and access to hiking and biking trails across the first plateau.
How do I get to Plage Du Grand Lac De Clairvaux?
Reaching Clairvaux-les-Lacs requires planning due to its rural Jura location. The nearest practical approach for most visitors involves flying into Geneva or Lyon airports, then renting a car for the drive to this lake district commune. Rail travelers can reach regional stations like Lons-le-Saunier, but onward connections to the village remain limited. Bus services operate primarily for local residents. A car provides the most flexible access to both the beach and surrounding attractions including hiking trails and archaeological sites.
What is the best time of year to visit Plage Du Grand Lac De Clairvaux?
July and August provide the warmest conditions for swimming, with average air temperatures around 20°C and lifeguard supervision in place. This peak period sees the commune's population quadruple as visitors fill campsites and accommodations. September offers quieter conditions with temperatures averaging 16°C, still swimmable for those comfortable in cooler water. January temperatures average just 2.2°C, making winter visits about landscape and archaeology rather than swimming. Late June and early September balance reasonable swimming weather against reduced crowds.
What facilities are there at Plage Du Grand Lac De Clairvaux?
The beach provides lifeguard supervision during the swimming season and includes facilities specifically designed for disabled visitors, making lake access more inclusive. Blue Flag certification indicates the presence of required safety equipment, environmental information, and maintained water quality standards. The surrounding commune supports visitors with two private campsites, two municipal campsites, hotels, gîtes, and furnished tourist rentals. This infrastructure explains how the small community accommodates summer crowds that quadruple its normal population.
Is Plage Du Grand Lac De Clairvaux suitable for families?
Families benefit from several features at this inland lake beach. Lifeguard supervision provides safety oversight for children swimming in the designated area. Facilities designed for disabled visitors indicate broader accessibility considerations. The freshwater lake environment lacks tides and strong currents common at coastal beaches, creating calmer conditions for younger swimmers. Four nearby campsites offer family-friendly accommodation, while hiking and biking trails provide activities beyond the beach. The archaeological heritage adds educational interest for children curious about prehistoric life.
Explore More
Nearby Blue Flag Beaches
Editorial
From the Zeach Blog
Everything you need to know about what makes a beach qualify for Blue Flag status, from water quality to environmental education.
Read moreOur editorial team's pick of the standout Blue Flag beaches in France, rated for family friendliness, scenery, and facilities.
What the flag actually means, how certification works, and why a Blue Flag is a genuinely reliable signal, not just a marketing tool.
Read moreSources
- Foundation for Environmental Education: Blue Flag programme
- FEE site listing for Plage du Grand Lac de Clairvaux
- FEE France (Pavillon Bleu)
Last verified September 2026. National operator pages and FEE listings are the primary certification sources.