Helsinki weather in January 2025

Expect 25°F daytime maximum temperatures in the shade with on average 1 hours of sunshine per day in Helsinki in January. Check more long-term weather averages for Helsinki in January before you book your next holiday to Finland in 2025/2026.

  • 25°F maximum daytime temperature in January in Helsinki25
    25°F max day temperature
  • 1 hour of sunshine per day
  • 20 days with some rainfall in January in Helsinki20
    20 days with some rainfall
  • 14°F minimum night-time temperature in January in Helsinki14
    14°F min night temperature
  • 7 hours of daylight per day in January in Helsinki7
    7 hours of daylight per day
  • No heat & humidity in January in Helsinki0
    No heat & humidity
  • 1.7 inches monthly rainfall in January in Helsinki1.7
    1.7 inches of monthly rainfall
  • No UV (maximum) index in January in Helsinki0
    No UV (Maximum) Index UV index
  • 34°F sea temperature in January in Helsinki34
    34°F sea temperature

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The January weather guide for Finland (Helsinki) 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)  |  Imperial (°F)

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How cold is it in Helsinki in January?

Daytime temperatures usually reach 25°F in Helsinki in January, falling to 14°F at night.

How sunny is it in Helsinki in January?

There are normally 1 hour of bright sunshine each day in Helsinki in January - that's 13% of daylight hours.

How warm is the sea around Helsinki in January?

The average sea temperature around Helsinki in January is 34°F.

Does it rain in Helsinki in January?

There are usually 20 days with some rain in Helsinki in January and the average monthly rainfall is 1.7 inches. Rain may fall as snow in this month.

Helsinki January sunrise & sunset times

Browse the sunrise and sunset times for Helsinki in January 2025. Select a month to view Helsinki sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st January 2025 09:24 15:24
Thursday, 16th January 2025 09:07 15:53
Friday, 31st January 2025 08:37 16:31

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