Helsinki weather in October 2025

Expect 48°F 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.

  • 48°F maximum daytime temperature in October in Helsinki48
    48°F max day temperature
  • 3 hours of sunshine per day
  • 17 days with some rainfall in October in Helsinki17
    17 days with some rainfall
  • 37°F minimum night-time temperature in October in Helsinki37
    37°F 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
  • 2.8 inches monthly rainfall in October in Helsinki2.8
    2.8 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in October in Helsinki1
    1 (Low) UV index
  • 48°F sea temperature in October in Helsinki48
    48°F sea temperature

More about Helsinki

Helsinki by month

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

Recommended for Finland

Skyscanner: Lowest flight prices by destination

  • Explore lowest airfares by destinations worldwide
  • Find the cheapest month or filter by route or month
  • Prices shown found on Skyscanner in last 8 days
Go to Skyscanner deal >>

View all Skyscanner offers

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)  |  Imperial (°F)

Back to top

How warm is it in Helsinki in October?

Daytime temperatures usually reach 48°F in Helsinki in October, falling to 37°F 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.

How warm is the sea around Helsinki in October?

The average sea temperature around Helsinki in October is 48°F.

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 2.8 inches.

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 ^