Lac de Lessy — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lac de Lessy, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lac de Lessy today is 20.4°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 |
|---|---|---|---|
| SEP 2 | 13.3°C | 11.0°C | |
| SEP 3 | 20.2°C | 11.0°C | |
| SEP 4 | 20.2°C | 11.0°C | |
| SEP 5 | 20.7°C | 11.0°C | |
| SEP 6 | 20.6°C | 11.0°C | |
| SEP 7 | 20.7°C | 11.0°C | |
| SEP 8 | 20.7°C | 11.0°C | |
| SEP 9 | 20.5°C | 11.0°C | |
| SEP 10 | 11.0°C | 19.9°C | |
| SEP 11 | 11.0°C | 19.5°C | |
| SEP 12 | 11.0°C | 19.0°C | |
| SEP 13 | 11.0°C | 18.5°C | |
| SEP 14 | 11.0°C | 18.1°C | |
| SEP 15 | 11.0°C | 17.6°C | |
| SEP 16 | 11.0°C | 17.1°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 | 0°C | 2°C | 5°C |
| February | 0°C | 0°C | 4°C |
| March | 0°C | 4°C | 7°C |
| April | 0°C | 5°C | 9°C |
| May | 3°C | 8°C | 13°C |
| June | 7°C | 12°C | 18°C |
| July | 9°C | 14°C | 20°C |
| August | 9°C | 14°C | 20°C |
| September | 6°C | 11°C | 17°C |
| October | 4°C | 8°C | 11°C |
| November | 0°C | 4°C | 7°C |
| December | 0°C | 2°C | 5°C |
Lac de Lessy: Water Temperature by Location
Lac de Lessy: Weather Forecast
September 10
September 11
September 12
September 13
September 14
Location & Local Information
Lac de Lessy, nestled in the Haute-Savoie region of France, is a stunning mountain lake that draws visitors with its turquoise waters and scenic alpine surroundings. Situated at an elevation of over 1,700 meters, the lake remains quite cool throughout the year, even in summer. Water temperatures generally range from 10 to 15°C (50 to 59°F) during the warmer months, making it a bracing spot for a quick dip rather than long swims. The lake’s high-altitude setting means it is often fed by melting snow and mountain streams, contributing to its consistently chilly temperatures.
Swimming in Lac de Lessy is possible, particularly for those who enjoy cold-water plunges, but it is not a traditional swimming destination due to the water’s low temperature. Instead, visitors often come to hike, picnic, or simply enjoy the breathtaking scenery. The area around Lac de Lessy offers numerous trails, including routes that provide panoramic views of the lake and surrounding mountains. Those attempting a swim are encouraged to be prepared for very cold water, with wetsuits recommended for added warmth.