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Mariehamn weather in January 2025
Expect -1°C daytime maximum temperatures in the shade with on average 1 hours of sunshine per day in Mariehamn in January. Check more long-term weather averages for Mariehamn in January before you book your next holiday to Finland in 2025/2026.
- -1-1°C max day temperature
- 1 hour of sunshine per day
- 2020 days with some rainfall
- -7-7°C min night temperature
- 77 hours of daylight per day
- 0No heat & humidity
- 3636 mm of monthly rainfall
- 0No UV (Maximum) Index UV index
- 22°C sea temperature
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Recommended for Finland
The January weather guide for Finland (Mariehamn) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
How cold is it in Mariehamn in January?
Daytime temperatures usually reach -1°C in Mariehamn in January, falling to -7°C at night.
How sunny is it in Mariehamn in January?
There are normally 1 hour of bright sunshine each day in Mariehamn in January - that's 9% of daylight hours.
Is the sea cold around Mariehamn in January?
The average sea temperature around Mariehamn in January is 2°C.
Does it rain in Mariehamn in January?
There are usually 20 days with some rain in Mariehamn in January and the average monthly rainfall is 36mm. Rain may fall as snow in this month.
Mariehamn January sunrise & sunset times
Browse the sunrise and sunset times for Mariehamn in January 2025. Select a month to view Mariehamn sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Wednesday, 1st January 2025 | 09:43 | 15:45 |
Thursday, 16th January 2025 | 09:27 | 16:14 |
Friday, 31st January 2025 | 08:56 | 16:52 |
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