Oulu weather in May 2025

Expect 12°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Oulu in May. Check more long-term weather averages for Oulu in May before you book your next holiday to Finland in 2025/2026.

  • 12°C maximum daytime temperature in May in Oulu12
    12°C max day temperature
  • 9 hours of sunshine per day
  • 11 days with some rainfall in May in Oulu11
    11 days with some rainfall
  • 3°C minimum night-time temperature in May in Oulu3
    3°C min night temperature
  • 19 hours of daylight per day in May in Oulu19
    19 hours of daylight per day
  • No heat & humidity in May in Oulu0
    No heat & humidity
  • 35 mm monthly rainfall in May in Oulu35
    35 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in May in Oulu3
    3 (Moderate) UV index
  • -1°C sea temperature in May in Oulu-1
    -1°C sea temperature

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The May weather guide for Finland (Oulu) 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 warm is it in Oulu in May?

Daytime temperatures usually reach 12°C in Oulu in May, falling to 3°C at night.

How sunny is it in Oulu in May?

There are normally 9 hours of bright sunshine each day in Oulu in May - that's 45% of daylight hours.

Is the sea cold around Oulu in May?

The average sea temperature around Oulu in May is -1°C.

Does it rain in Oulu in May?

There are usually 11 days with some rain in Oulu in May and the average monthly rainfall is 35mm.

Oulu May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 03:43 20:50
Friday, 16th May 2025 02:49 21:43
Saturday, 31st May 2025 01:59 22:36

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