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Thonon-les-Bains in September

Find out everything about the water temperature in Thonon-les-Bains in September. Average, minimum and maximum recorded temperatures as well as daily temperature in September for the last two years. Compare the current month's water temperature data with other months of the year.
Water temperature in September
Minimum:

62.3 °F

Average:

68.6 °F

Maximum:

75.0 °F

Water temperature in Thonon-les-Bains in September

In the city of Thonon-les-Bains, the month of September is somewhat comfortable for swimming. The minimum recorded temperature during this month was 62.3°F on September 28, 2017, with an average temperature being 68.6°F and a maximum temperature reaching 75.0°F on September 1, 2023.

While some may find it enjoyable for a brief swim, others might consider it a bit too cold for extended periods in the water. Throughout the month of September, the water temperature gradually gets colder. Starting with an average temperature of 71.0°F at the beginning of the month, it steadily decreases to around 65.9°F by the end.
Date 10 years average 2024 2023
Sep 1 72.0°F 72.4°F 75.0°F
Sep 2 71.8°F 73.0°F 74.6°F
Sep 3 71.5°F 72.1°F 73.4°F
Sep 4 71.3°F 72.2°F 72.9°F
Sep 5 70.9°F 72.2°F 70.8°F
Sep 6 71.0°F 71.8°F 72.0°F
Sep 7 71.0°F 70.3°F 73.1°F
Sep 8 70.3°F 69.4°F 71.8°F
Sep 9 70.2°F 69.2°F 72.8°F
Sep 10 70.1°F 70.3°F 73.5°F
Sep 11 69.6°F 68.9°F 73.3°F
Sep 12 69.4°F 68.5°F 72.9°F
Sep 13 69.2°F 68.1°F 72.3°F
Sep 14 69.0°F 67.7°F 71.7°F
Sep 15 69.0°F 67.6°F 71.3°F
Sep 16 68.7°F 67.5°F 70.1°F
Sep 17 68.8°F 67.4°F 70.0°F
Sep 18 68.6°F 67.2°F 69.7°F
Sep 19 68.3°F 67.1°F 69.5°F
Sep 20 68.1°F 67.0°F 69.4°F
Sep 21 68.0°F 66.8°F 69.7°F
Sep 22 67.3°F 66.4°F 69.1°F
Sep 23 66.8°F 65.9°F 68.9°F
Sep 24 66.4°F 65.5°F 68.9°F
Sep 25 65.8°F 65.0°F 66.8°F
Sep 26 65.5°F 64.5°F 67.6°F
Sep 27 65.2°F 64.1°F 67.2°F
Sep 28 64.9°F 63.6°F 67.5°F
Sep 29 64.8°F 63.5°F 67.1°F
Sep 30 64.7°F 63.4°F 66.5°F

Water temperature in Thonon-les-Bains by month

In Thonon-les-Bains, there are only 5 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 August 24, 2023, reaching a 77.8°F. While the coldest temperature occurred on February 14, 2017, dipping to 42.7°F. The average readings by season are 46.0°F in Winter, 50.7°F in Spring, 69.7°F in Summer, and 61.3°F in Autumn. September's average temperature is a slight drop from August's average of 72.7°F. In October, the temperature is expected to decrease further, potentially averaging around 60.9°F.