Water temperature in Lake Bourget

This data the coastal Lake Bourget water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current water temperature in Lake Bourget

Water temperature in Lake Bourget today is 19°C. Based on our historical data over a period of ten years, the warmest water in this day in Lake Bourget was 22°C, and the coldest 19°C. Water temperature in Lake Bourget is expected to rise to 20°C in the next 10 days. September average water temperature in Lake Bourget is 19.3°C, the minimum temperature is 12°C, and the maximum is 24°C.

The swimming season in Lake Bourget lasts from June to September. During those months, Lake Bourget water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Lake Bourget in winter reaches 5.7°C, in spring 11.9°C, in summer the average temperature rises to 22.2°C, and in autumn it is 14.7°C.

Lake Bourget water temperature now

Current temperature and weather

Data in a table show Lake Bourget temperature today (6 September 2025). For more information and forecast for a few days, go to the weather forecast Lake Bourget.

0-3 h	3-6 h	6-9 h	9-12 h
10.7°C	10.1°C	10.2°C	16.2°C

12-15 h	15-18 h	18-21 h	21-24 h
21.4°C	22.8°C	19.4°C	9.3°C

Lake Bourget water temperature by month

These figures shows the average, minimum and maximum monthly water temperature in Lake Bourget. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Lake Bourget on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

Chart monthly average water temperature in Lake Bourget

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Grey Lake, Lac du Bourget, Le Bourget du Lac

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Our report for Lake Bourget is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.