Thonon-les-Bains — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Thonon-les-Bains, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Thonon-les-Bains today is 22.5°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| SEP 2 | 22.7°C | 20.0°C | |
| SEP 3 | 22.0°C | 20.0°C | |
| SEP 4 | 21.9°C | 20.0°C | |
| SEP 5 | 21.3°C | 20.0°C | |
| SEP 6 | 21.3°C | 20.0°C | |
| SEP 7 | 21.8°C | 20.0°C | |
| SEP 8 | 21.8°C | 20.0°C | |
| SEP 9 | 21.4°C | 20.0°C | |
| SEP 10 | 20.0°C | 22.4°C | |
| SEP 11 | 20.0°C | 22.3°C | |
| SEP 12 | 20.0°C | 22.1°C | |
| SEP 13 | 20.0°C | 22.0°C | |
| SEP 14 | 20.0°C | 21.9°C | |
| SEP 15 | 20.0°C | 21.8°C | |
| SEP 16 | 20.0°C | 21.6°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 3°C | 7°C | 10°C |
| February | 3°C | 7°C | 10°C |
| March | 5°C | 9°C | 12°C |
| April | 7°C | 12°C | 17°C |
| May | 10°C | 15°C | 21°C |
| June | 17°C | 22°C | 27°C |
| July | 18°C | 23°C | 28°C |
| August | 18°C | 23°C | 28°C |
| September | 14°C | 20°C | 25°C |
| October | 10°C | 14°C | 18°C |
| November | 6°C | 10°C | 13°C |
| December | 3°C | 7°C | 10°C |
Thonon-les-Bains: Weather Forecast
September 10
September 11
September 12
September 13
September 14
Location & Local Information
Thonon-les-Bains is a charming town located on the French side of Lake Geneva, offering a beautiful view of the lake and the surrounding Alps. The lake is an excellent destination for swimming, especially during the warmer months. In summer, from June to September, the water temperature in Lake Geneva typically ranges from 20°C to 24°C (68°F to 75°F), which is comfortable for swimming. The clear and calm waters make it an ideal place for a refreshing swim, and several beaches and public swimming areas around Thonon-les-Bains offer excellent facilities for both leisure swimmers and water sports enthusiasts.
In the cooler months, from October to May, the water temperature drops, ranging from 12°C to 18°C (54°F to 64°F) in spring and autumn, making it still refreshing but more suitable for experienced swimmers or those wearing a wetsuit. In winter, the water temperature can drop to 4°C to 6°C (39°F to 43°F), which makes swimming less practical. However, the stunning beauty of the area and its peaceful atmosphere make Thonon-les-Bains a fantastic place to visit, even if swimming is limited during the colder months.