Mariehamn weather in January 2026

Expect -1°C daytime maximum temperatures in the shade with on average 1 hour of sunshine per day in Mariehamn in January based on long-term weather averages. There is usually 20 days with some rainfall and 36 mm of average monthly rainfall in January.

  • -1°C maximum daytime temperature in January in Mariehamn-1
    -1°C max day temperature
  • 1 hour of sunshine per day
  • 20 days with some rainfall in January in Mariehamn20
    20 days with some rainfall
  • -7°C minimum night-time temperature in January in Mariehamn-7
    -7°C min night temperature
  • 7 hours of daylight per day in January in Mariehamn7
    7 hours of daylight per day
  • No heat & humidity in January in Mariehamn0
    No heat & humidity
  • 36 mm monthly rainfall in January in Mariehamn36
    36 mm of monthly rainfall
  • No UV (maximum) index in January in Mariehamn0
    No UV (Maximum) Index UV index
  • 2°C sea temperature in January in Mariehamn2
    2°C sea temperature

More about Mariehamn

Mariehamn by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Finland

KAYAK: Explore destinations from the UK

  • Explore top offers on direct flights from the UK
  • Filter destinations by price, trip type, flight time & more
  • Choose a destination to see cheapest fares & airlines
Go to KAYAK deal >>

View all KAYAK offers

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)

Back to top

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 2026. Select a month to view Mariehamn sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 09:43 15:45
Friday, 16th January 2026 09:27 16:13
Saturday, 31st January 2026 08:57 16:51

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^