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Helsinki — weather in August, water temperature

By months January February March April May June July August September October November December
19.6°C Daytime temperatures 15.1°C Night temperatures 14 Sunny days 14.3-16.9 Sun (hours) 6 Rainy days 64.4 mm Precipitation 17.2°C water temperature
Air temperature
2022 2021 2020 2019 2018 2017 2016 2015 2014 2013
The maximum daily temperature 27°C — 12 August 2022.
The maximum night temperature 22.5°C — 2 August 2018.
The minimum daily temperature 12°C — 23 August 2021.
The minimum night temperature 8.5°C — 24 August 2021.
water temperature
2022 2021 2020 2019 2018 2017 2016 2015 2013 2012
The warmest water 23.5 °C — 3 August 2018. The coldest water 12.8 °C — 5 August 2021.
Sunny, cloudy and gloomy days
Precipitation, mm
Maximum precipitation 64.4 mm — August. Minimum precipitation 35.8 mm — April.
Wind speed, km / h
Maximum wind speed 21.1 km / h — December. Minimum wind speed 14.4 km / h — May.
Number of hours of sunshine
The maximum number of hours of sunshine per day 12.1 h. — June. The minimum number of hours of sunshine per day 1.6 h. — December.
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