All data are in degrees Fahrenheit

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Water temperature in Thonon-les-Bains

Detailed information about the current water temperature in Thonon-les-Bains. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Water temperature in Thonon-les-Bains now

73.3

°F

September 4, 07:27

Trend:

decreasing

Yesterday:

73.4°F

Tomorrow:

73.0°F

Sunrise:

06:57

Sunset:

20:08

Day Length:

13 h. 11 min.

Thonon-les-Bains in September

Minimum:

44.5°F

Average:

46.1°F

Maximum:

49.0°F

Water temperature in Thonon-les-Bains today

As of now, in Thonon-les-Bains, the water temperature is 73.3°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 2.0°F higher than the average recorded on this particular day in recent years. The water temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to fall a bit.

Recent water temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 73.0°F on 2016, while the historical minimum was 67.3°F on 2021.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 72.6°F, the minimum temperature may reach 71.9°F, and the maximum might stay at 73.2°F.

Daily water temperature in Thonon-les-Bains

Date Current Year

actual* / forecast**

last year 10 years average
Aug 21 76.7°F 74.2°F 73.3°F
Aug 22 75.9°F 73.8°F 73.3°F
Aug 23 74.1°F 73.3°F 73.0°F
Aug 24 73.7°F 72.8°F 72.9°F
Aug 25 73.6°F 72.4°F 72.9°F
Aug 26 74.1°F 72.5°F 72.8°F
Aug 27 74.6°F 72.6°F 72.7°F
Aug 28 73.9°F 72.4°F 72.5°F
Aug 29 74.2°F 72.0°F 72.4°F
Aug 30 74.1°F 72.6°F 72.6°F
Aug 31 74.1°F 71.8°F 72.5°F
Sep 1 74.0°F 71.6°F 72.3°F
Sep 2 73.7°F 70.1°F 72.0°F
Sep 3 73.4°F 69.1°F 71.4°F
Sep 4 73.3°F 69.7°F 71.3°F
Sep 5 73.0°F 70.0°F 70.9°F
Sep 6 73.2°F 70.4°F 71.2°F
Sep 7 73.2°F 70.0°F 71.1°F
Sep 8 72.5°F 69.9°F 70.4°F
Sep 9 72.4°F 69.4°F 70.4°F
Sep 10 72.3°F 68.9°F 70.3°F
Sep 11 71.9°F 70.2°F 69.9°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Water temperature in Thonon-les-Bains by month

In Thonon-les-Bains, there are only 21 days through the year when the water is warm enough to be comfortable for swimming.
The warmest water in Thonon-les-Bains was recorded on July 1, 2026, reaching a 79.8°F. While the coldest temperature occurred on February 14, 2017, dipping to 42.7°F. The average readings by season are 46.1°F in Winter, 51.2°F in Spring, 70.4°F in Summer, and 61.3°F in Autumn.