Diving atHermance (France)
Divers exploring Hermance, positioned on the French side of Lake Geneva, will discover a freshwater site accommodating all certification levels. Its accessible shore entry provides a gateway to a varied underwater landscape suitable for both recreational and technical divers. Depths here allow for diverse training and exploration, reaching down to 50 m (164 ft).
At Hermance, the ambient air temperature is currently recorded at 13°C. This dive site in France is operating under normal seasonal weather patterns. Familiarize yourself with the local topography prior to navigating.
Dive Site Location & Key Facts
Everything you need to know about this dive site.
Dive Site Overview
An intriguing underwater world unfolds off Hermance beach, combining both natural formations and purpose-placed artificial structures. Divers initially encounter a series of five wrecks, intentionally submerged and spread across a significant depth range.
Beginning at 12 m (39 ft), these wrecks progressively deepen, with the most profound lying at 50 m (164 ft). A variety of submerged vessels, from small boats to a larger sailboat, offer distinct exploration opportunities suitable for different certification levels. Shallower sections of the site, particularly around 3 meters, feature an expansive seagrass bed, serving as a vital habitat for local freshwater fish species.
Beyond the primary wrecks, divers discover unique points of interest like a submerged letterbox, various traffic signs, and playful garden gnomes, which serve as memorable navigation targets and add to the site's unique character. The convenient shore entry, complemented by readily available facilities such as changing rooms and first aid, makes this a practical location for training or casual excursions within this significant body of freshwater.
This diverse underwater environment supports everything from basic open water training to advanced technical dives, catering to a wide range of diver experience.
Hermance
Conditions are Excellent
Best Dive Window
07:00 - 14:00
Optimal conditions expected
Current conditions near Hermance show 13° air, --° sea temperature, N/A waves, and 7 km/h wind. Forecast data is refreshed regularly to ensure accuracy.
Best Time to Dive
Diving at Hermance remains viable for much of the year, with generally good conditions reported monthly. Air temperatures during summer, from June to August, typically range between 20°C (68°F) and 22°C (72°F), making surface intervals comfortable. Rainfall is moderate year-round, averaging between 2.6 mm (0.10 in) and 5.1 mm (0.20 in) monthly, so planning around specific weather forecasts is advisable. Water temperatures are not consistently reported but vary seasonally, influencing exposure suit choice. Optimal surface conditions often align with warmer air temperatures, enhancing the overall dive experience.
PEAK SEASON SCORE
Scores combine air & water temps, waves, wind & rainfall for overall conditions.
BEST MONTHS TO DIVE
Monthly records compiled from satellite and marine observation nodes over the last 3 years. Data provided by Open-Meteo and MET Norway.
Dive Experience & Conditions
Accessing the water at Hermance is straightforward from shore, where a gentle slope aids easy entry and exit. Underwater visibility can be quite good, particularly during certain seasons like autumn, though it varies significantly depending on recent weather patterns and activity within this body of water. Conditions for this freshwater diving experience differ markedly from typical marine environments; therefore, precise buoyancy control and effective temperature management are key considerations. The site reaches its maximum depth at 50 meters, with numerous shallower sections closer to the entry point providing ample opportunities for less experienced divers. Its diverse depth profile means diver skill levels from PADI Open Water to Tec 40/45/50 are well accommodated, allowing for varied exploration across the site's features.
Dive Difficulty & Safety Guidelines
While Hermance offers accessibility for all diver levels, appropriate training and equipment are essential for a safe experience. Facilities in the entry area, including changing rooms, toilets, and first aid, contribute to diver comfort and preparedness before and after dives. For deeper explorations, especially when aiming for the maximum depths, advanced certifications such as Tec 40/45/50 are strongly recommended. Awareness of depth limits and no-decompression limits is crucial, particularly when exploring the deeper wrecks located within the site. Always prioritize diving within your certified training and personal comfort limits to ensure a secure and enjoyable outing.
Recommended Equipment
Overhead / entanglement risk. Wreck penetration requires proper training.
- Dive Computer
- Primary & Backup Lights
- Wreck Reel
- Cutting Tool
This gear list is based on verified equipment signals for Hermance, France. Always confirm final gear choices with your dive operator, guide, or liveaboard.
Recommended Dive Suit
With water temperatures around 13°C (55°F), many divers find a a thicker wetsuit or drysuit provides comfortable protection.
Local dive briefings can provide the most accurate guidance.
Weather patterns are currently shifting, so expect some variability in conditions. A warming trend is expected over the next few days.
Due to technical issues with our weather providers, data hasn't been fetched for over 48 hours. The data above reflects the conditions at the time of the last successful fetch.
Emergency & Medical Support
Essential information to help you plan your dive trip to Hermance.
Hyperbaric chambers are a critical part of dive safety infrastructure. Availability varies significantly by region, and not all dive areas have immediate access.
Before diving, it's recommended to:
- confirm nearest medical facilities
- check emergency procedures with local dive operators
- ensure dive insurance covers evacuation if required
Divers Alert Network
Diving emergency assistance available through DAN Europe.
+39 0642115685- 24/7 emergency hotline
- Diving medical assistance
- Evacuation coordination
Emergency contacts are provided for reference. Always verify local emergency services before diving.
Closest Listed Hyperbaric Chambers
Showing listed hyperbaric chamber facilities within 200 km of this dive site.
Distances are approximate straight-line distances and may not reflect emergency travel time.
Unité de Medecine Subaquatique et Hyperbare des HUG
24/7 ListedICU CapableGeneva 14, Switzerland•Approx. 14 km straight-line
Unité de Medecine Subaquatique et Hyperbare des HUG
24/7 ListedICU CapableFacility Details
Information is provided for reference and planning purposes only. Dive Navigator does not verify operational status, staffing, availability, or quality of care at listed facilities. In an emergency, contact local emergency services, DAN, your dive operator, or the chamber directly. Do not travel to a facility without calling ahead.
Centre Hyperbare de Bâle
Basel, Switzerland•Approx. 175 km straight-line
Centre Hyperbare de Bâle
Facility Details
Information is provided for reference and planning purposes only. Dive Navigator does not verify operational status, staffing, availability, or quality of care at listed facilities. In an emergency, contact local emergency services, DAN, your dive operator, or the chamber directly. Do not travel to a facility without calling ahead.
Habilita - I Cedri Hyperbaric Center
24/7 ListedICU CapableFara Novarese, Italy•Approx. 191 km straight-line
Habilita - I Cedri Hyperbaric Center
24/7 ListedICU CapableFacility Details
Information is provided for reference and planning purposes only. Dive Navigator does not verify operational status, staffing, availability, or quality of care at listed facilities. In an emergency, contact local emergency services, DAN, your dive operator, or the chamber directly. Do not travel to a facility without calling ahead.
Marine Life at Hermance
The underwater terrain at Hermance, characterized by rock formations, steep walls, sandy bottoms, and seagrass, creates diverse habitats. Divers frequently observe local freshwater fauna such as perch, pike of various sizes, and trout navigating the structures. Crayfish are also occasionally spotted among the rocks and debris. The seagrass beds, particularly in shallower sections, act as nurseries and feeding grounds, enhancing the chances of spotting resident fish species.
Dive Sites Near Hermance
View all dive sites in FranceDiscover more underwater gems in this area.
Dive Centers Near Hermance
Working Hours
Today: 09:00 - 19:00
Scub H2O
Centre De Sports Subaquatiques Lausanne
Scubastars
Nearest Airports
Nearest airports to help plan travel to this dive area.
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Search Flights on ExpediaFrequently Asked Questions
What skill level is required for diving at Hermance?
Hermance caters to a wide range of certifications. PADI Open Water divers can explore shallower sections and some initial wreck sites. Deeper areas and more complex wreck penetrations are best suited for advanced divers with Tec 40/45/50 certifications.
What marine life can I expect to see?
Divers in this freshwater site frequently encounter perch, various sizes of pike, and trout inhabiting the rock formations and seagrass beds. Crayfish are also occasionally spotted moving among the debris and artificial structures. The site's diverse habitats support a rich array of local freshwater species.
What are the typical visibility conditions?
Visibility at Hermance can be quite good, particularly during autumn when the water is clearer. However, conditions vary throughout the year, influenced by recent rainfall, surface activity, and seasonal changes. Checking local reports prior to diving is always advisable.
Are there any strong currents?
As an inland body of water, Hermance generally does not experience significant currents typical of ocean dives. Any movement is usually subtle and localized, primarily influenced by wind on the surface or seasonal water flow. It's considered a relatively calm dive site in terms of water movement.
What kind of artificial structures are present?
Beyond the five main wrecks, Hermance features a playful array of submerged objects. Divers can navigate by a letterbox, various road signs, and even garden gnomes, providing unique points of interest and aiding underwater navigation. These structures add character to the dive experience.
Is it possible to dive year-round?
Diving is possible for much of the year, though conditions change seasonally. Surface temperatures are most comfortable from June to August. Divers should be prepared for cooler water temperatures outside of summer months, necessitating appropriate thermal protection such as a drysuit.
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Hermance
Conditions are Excellent
Best Dive Window
07:00 - 14:00
Optimal conditions expected
Current conditions near Hermance show 13° air, --° sea temperature, N/A waves, and 7 km/h wind. Forecast data is refreshed regularly to ensure accuracy.