Helsinki weather in October 2025

Expect 9°C daytime maximum temperatures in the shade with on average 3 hours of sunshine per day in Helsinki in October. Check more long-term weather averages for Helsinki in October before you book your next holiday to Finland in 2025/2026.

  • 9°C maximum daytime temperature in October in Helsinki9
    9°C max day temperature
  • 3 hours of sunshine per day
  • 17 days with some rainfall in October in Helsinki17
    17 days with some rainfall
  • 3°C minimum night-time temperature in October in Helsinki3
    3°C min night temperature
  • 10 hours of daylight per day in October in Helsinki10
    10 hours of daylight per day
  • No heat & humidity in October in Helsinki0
    No heat & humidity
  • 72 mm monthly rainfall in October in Helsinki72
    72 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in October in Helsinki1
    1 (Low) UV index
  • 9°C sea temperature in October in Helsinki9
    9°C sea temperature

More about Helsinki

Helsinki by month

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

Recommended for Finland

  • Save up to 10% on cheap car hire worldwide
  • Exclusive Holiday Autos discount code automatically applied
  • Travel before 31st December 2024 (inclusive)
Show discount codeShow discount code ******vel

Expires at 23:59 on Tuesday 31st Dec 2024 · View all Holiday Autos offers

Holiday AutosCar hire finder

The October 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)

Back to top

How warm is it in Helsinki in October?

Daytime temperatures usually reach 9°C in Helsinki in October, falling to 3°C at night.

How sunny is it in Helsinki in October?

There are normally 3 hours of bright sunshine each day in Helsinki in October - that's 26% of daylight hours.

Is the sea cold around Helsinki in October?

The average sea temperature around Helsinki in October is 9°C.

Does it rain in Helsinki in October?

There are usually 17 days with some rain in Helsinki in October and the average monthly rainfall is 72mm.

Helsinki October sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 06:26 17:52
Thursday, 16th October 2025 07:03 17:08
Friday, 31st October 2025 07:41 16:26

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^