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Seinajoki — weather in September, water temperature

By months January February March April May June July August September October November December
13.6°C Daytime temperatures 7.9°C Night temperatures 7 Sunny days 11.5-14.4 Sun (hours) 4 Rainy days 53.4 mm Precipitation 13°C water temperature
Air temperature
2022 2021 2020 2019 2018 2017 2016 2015 2014 2013
The maximum daily temperature 22.5°C — 1 September 2019.
The maximum night temperature 16°C — 2 September 2019.
The minimum daily temperature 5.7°C — 23 September 2014.
The minimum night temperature -1.5°C — 30 September 2013.
water temperature
2022 2021 2020 2019 2018 2017 2016 2015 2013 2012
The warmest water 17.6 °C — 2 September 2019. The coldest water 8.9 °C — 29 September 2013.
Sunny, cloudy and gloomy days
Precipitation, mm
Maximum precipitation 77.4 mm — August. Minimum precipitation 27.3 mm — March.
Wind speed, km / h
Maximum wind speed 13.5 km / h — March. Minimum wind speed 10.6 km / h — July.
Number of hours of sunshine
The maximum number of hours of sunshine per day 11.5 h. — June. The minimum number of hours of sunshine per day 1.4 h. — December.
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