Lac de Nantua — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lac de Nantua, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lac de Nantua today is 21.4°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 |
|---|---|---|---|
| AUG 4 | 21.2°C | 22.0°C | |
| AUG 5 | 21.3°C | 22.0°C | |
| AUG 6 | 22.8°C | 22.0°C | |
| AUG 7 | 22.8°C | 22.0°C | |
| AUG 8 | 21.2°C | 22.0°C | |
| AUG 9 | 21.2°C | 22.0°C | |
| AUG 10 | 21.2°C | 22.0°C | |
| AUG 11 | 21.4°C | 22.0°C | |
| AUG 12 | 22.0°C | 21.4°C | |
| AUG 13 | 22.0°C | 21.5°C | |
| AUG 14 | 22.0°C | 21.5°C | |
| AUG 15 | 22.0°C | 21.5°C | |
| AUG 16 | 22.0°C | 21.6°C | |
| AUG 17 | 22.0°C | 21.6°C | |
| AUG 18 | 22.0°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 | 2°C | 6°C | 9°C |
| February | 2°C | 6°C | 9°C |
| March | 4°C | 8°C | 11°C |
| April | 7°C | 12°C | 15°C |
| May | 9°C | 14°C | 20°C |
| June | 15°C | 21°C | 26°C |
| July | 17°C | 22°C | 27°C |
| August | 17°C | 22°C | 27°C |
| September | 13°C | 19°C | 24°C |
| October | 9°C | 13°C | 17°C |
| November | 5°C | 9°C | 12°C |
| December | 2°C | 6°C | 9°C |
Lac de Nantua: Water Temperature by Location
Lac de Nantua: Weather Forecast
August 12
August 13
August 14
August 15
Location & Local Information
Lac de Nantua, located in the Ain department of eastern France, is a scenic glacial lake known for its turquoise-blue water and mountainous surroundings. The lake, which spans approximately 141 hectares, reaches depths of up to 42 meters, which means its water temperature can vary depending on the season and depth. In summer, the surface temperature typically warms up to around 22–24°C (72–75°F), making it comfortable for swimming, particularly from June to August. In cooler months, the temperature can drop significantly, which attracts fewer swimmers but remains popular with nature lovers and outdoor enthusiasts.
Swimming in Lac de Nantua is a popular activity, and there are designated areas for swimmers. The lake’s calm and clear water creates a pleasant swimming experience, and amenities such as beaches and picnic areas enhance its appeal as a family-friendly destination. The Plage de Nantua, the main beach area, has supervised swimming zones in summer, ensuring safety for visitors. In addition to swimming, the lake also offers opportunities for other water sports, such as paddleboarding and kayaking, making it a versatile location for water-based recreation.