Helsinki weather in January 2026

Expect daytime maximum temperatures of -4°C in Helsinki in January based on long-term weather averages. There is 1 hour of sunshine per day on average with 20 days with some rainfall and typically 43 mm of rainfall in the month, which might fall as snow.

  • -4°C maximum daytime temperature in January in Helsinki-4
    -4°C max day temperature
  • 1 hour of sunshine per day
  • 20 days with some rainfall in January in Helsinki20
    20 days with some rainfall
  • -10°C minimum night-time temperature in January in Helsinki-10
    -10°C 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
  • 43 mm monthly rainfall in January in Helsinki43
    43 mm of monthly rainfall
  • No UV (maximum) index in January in Helsinki0
    No UV (Maximum) Index UV index
  • 1°C sea temperature in January in Helsinki1
    1°C 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 / mm)  |  Imperial (°F / inches)

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How cold is it in Helsinki in January?

Daytime temperatures usually reach -4°C in Helsinki in January, falling to -10°C 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.

Is the sea cold around Helsinki in January?

The average sea temperature around Helsinki in January is 1°C.

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 43mm. Rain may fall as snow in this month.

Helsinki January sunrise & sunset times

Browse the sunrise and sunset times for Helsinki in January 2026. Select a month to view Helsinki sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 09:24 15:24
Friday, 16th January 2026 09:08 15:53
Saturday, 31st January 2026 08:37 16:31

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