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Rennes — weather in August, water temperature

23°C Daytime temperatures 13.9°C Night temperatures 11 Sunny days 13.4-15 Sun (hours) 4 Rainy days 44 mm Precipitation 18.7°C water temperature
Air temperature
2022 2021 2020 2019 2018 2017 2016 2015 2014 2013
The maximum daily temperature 40°C — 13 August 2022.
The maximum night temperature 22.5°C — 13 August 2015.
The minimum daily temperature 15°C — 3 August 2021.
The minimum night temperature 5.5°C — 21 August 2014.
water temperature
2022 2021 2020 2019 2018 2017 2016 2015 2013 2012
The warmest water 20.4 °C — 14 August 2022. The coldest water 17.3 °C — 1 August 2015.
Sunny, cloudy and gloomy days
Precipitation, mm
Maximum precipitation 71.6 mm — June. Minimum precipitation 24.4 mm — September.
Wind speed, km / h
Maximum wind speed 17.9 km / h — February. Minimum wind speed 12.8 km / h — August.
Number of hours of sunshine
The maximum number of hours of sunshine per day 9.4 h. — July. The minimum number of hours of sunshine per day 3.5 h. — January.
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