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Helsinki — weather in January, water temperature

By months January February March April May June July August September October November December
-1.9°C Daytime temperatures -3.2°C Night temperatures 3 Sunny days 6-7.9 Sun (hours) 3 Rainy days 57.2 mm Precipitation 1.2°C water temperature
Air temperature
2022 2021 2020 2019 2018 2017 2016 2015 2014 2013
The maximum daily temperature 7.5°C — 15 January 2020.
The maximum night temperature 6.5°C — 21 January 2020.
The minimum daily temperature -24.7°C — 7 January 2016.
The minimum night temperature -21.5°C — 22 January 2016.
water temperature
2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012
The warmest water 4.2 °C — 6 January 2012. The coldest water -1.6 °C — 27 January 2013.
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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