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Chamonix — weather in September, water temperature

13.1°C Daytime temperatures 4°C Night temperatures 14 Sunny days 11.8-13.3 Sun (hours) 7 Rainy days 80.5 mm Precipitation 18.3°C water temperature
Air temperature
2022 2021 2020 2019 2018 2017 2016 2015 2014 2013
The maximum daily temperature 22.3°C — 4 September 2013.
The maximum night temperature 12.5°C — 5 September 2020.
The minimum daily temperature -2°C — 26 September 2020.
The minimum night temperature -5.5°C — 27 September 2020.
water temperature
2022 2021 2020 2019 2018 2017 2016 2015 2013 2012
The warmest water 22.9 °C — 6 September 2016. The coldest water 16.8 °C — 28 September 2017.
Sunny, cloudy and gloomy days
Precipitation, mm
Maximum precipitation 159.6 mm — May. Minimum precipitation 64 mm — October.
Wind speed, km / h
Maximum wind speed 7.7 km / h — January. Minimum wind speed 6.4 km / h — September.
Number of hours of sunshine
The maximum number of hours of sunshine per day 10.3 h. — July. The minimum number of hours of sunshine per day 4.8 h. — January.
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