Lac du Bourget — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lac du Bourget, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lac du Bourget today is 22.8°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 |
|---|---|---|---|
| JUL 15 | 23.7°C | 22.0°C | |
| JUL 16 | 23.8°C | 22.0°C | |
| JUL 17 | 23.8°C | 22.0°C | |
| JUL 18 | 23.7°C | 22.0°C | |
| JUL 19 | 23.6°C | 22.0°C | |
| JUL 20 | 23.3°C | 22.0°C | |
| JUL 21 | 23.0°C | 22.0°C | |
| JUL 22 | 22.8°C | 22.0°C | |
| JUL 23 | 22.0°C | 22.8°C | |
| JUL 24 | 22.0°C | 22.7°C | |
| JUL 25 | 22.0°C | 22.7°C | |
| JUL 26 | 22.0°C | 22.6°C | |
| JUL 27 | 22.0°C | 22.6°C | |
| JUL 28 | 22.0°C | 22.6°C | |
| JUL 29 | 22.0°C | 22.5°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 | 5°C | 9°C | 12°C |
| February | 4°C | 8°C | 11°C |
| March | 7°C | 11°C | 14°C |
| April | 8°C | 13°C | 17°C |
| May | 10°C | 15°C | 21°C |
| June | 14°C | 20°C | 25°C |
| July | 17°C | 22°C | 27°C |
| August | 17°C | 22°C | 27°C |
| September | 13°C | 19°C | 24°C |
| October | 11°C | 15°C | 19°C |
| November | 7°C | 11°C | 14°C |
| December | 5°C | 9°C | 12°C |
Lac du Bourget: Water Temperature by Location
Lac du Bourget: Weather Forecast
July 23
July 24
July 25
July 26
July 27
Location & Local Information
Max. length 18 km (11 mi)
Max. width 3.5 km (2.2 mi)
Surface area 44.5 km2 (17.2 sq mi)
Average depth 85 m (279 ft)
Max. depth 145 m (476 ft)
Lac du Bourget, located in the Savoie region of France, is the country’s largest natural lake and a popular destination for swimming, especially in summer. During the warmer months, water temperatures can reach 22-26°C (72-79°F), making it ideal for swimming and other water activities. The lake has several beaches with designated swimming areas, such as Plage du Bourget-du-Lac and Plage de Châtillon, which are monitored by lifeguards during peak season, providing a safe and enjoyable experience for visitors.
Besides swimming, Lac du Bourget offers a range of recreational options, including boating, paddleboarding, and kayaking. Surrounded by mountains and natural beauty, it’s also a favorite spot for scenic picnics and nature walks. In the colder months, the water temperature drops significantly, often falling below 10°C (50°F), making swimming less appealing. However, the lake remains a tranquil retreat for hiking and wildlife observation, attracting visitors throughout the year.