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

79.7

°F

July 2, 06:50

Trend:

decreasing

Yesterday:

79.8°F

Tomorrow:

79.5°F

Sunrise:

05:46

Sunset:

21:30

Day Length:

15 h. 44 min.

Thonon-les-Bains in July

Minimum:

44.9°F

Average:

46.2°F

Maximum:

47.0°F

Water temperature in Thonon-les-Bains today

As of now, in Thonon-les-Bains, the water temperature is 79.7°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 9.4°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 notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 75.4°F on 2025, while the historical minimum was 66.9°F on 2017.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 79.7°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Thonon-les-Bains

Date Current Year

actual* / forecast**

last year 10 years average
Jun 18 70.9°F 68.7°F 67.0°F
Jun 19 72.5°F 69.4°F 67.4°F
Jun 20 71.0°F 69.9°F 67.4°F
Jun 21 71.8°F 70.0°F 67.7°F
Jun 22 73.5°F 70.3°F 68.1°F
Jun 23 74.4°F 71.7°F 68.6°F
Jun 24 75.8°F 72.2°F 69.0°F
Jun 25 76.4°F 73.1°F 69.5°F
Jun 26 76.0°F 73.5°F 69.6°F
Jun 27 77.2°F 73.0°F 70.0°F
Jun 28 76.9°F 74.1°F 70.5°F
Jun 29 78.1°F 74.8°F 70.7°F
Jun 30 77.8°F 75.7°F 71.1°F
Jul 1 79.8°F 75.2°F 70.4°F
Jul 2 79.7°F 75.4°F 70.3°F
Jul 3 79.5°F 75.3°F 70.1°F
Jul 4 79.5°F 75.2°F 70.1°F
Jul 5 79.7°F 75.3°F 70.3°F
Jul 6 79.7°F 74.2°F 70.3°F
Jul 7 79.8°F 73.2°F 70.4°F
Jul 8 80.0°F 73.1°F 70.6°F
Jul 9 79.9°F 71.3°F 70.5°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 8 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 June 29, 2026, reaching a 78.1°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, 70.2°F in Summer, and 61.3°F in Autumn.