Oslo weather in May 2025

Expect daytime maximum temperatures of 15°C in Oslo, Norway in May based on long-term weather averages. There are 7 hours of sunshine per day on average with 14 days with some rainfall and typically 56 mm of rainfall in the month.

  • 15°C maximum daytime temperature in May in Oslo15
    15°C max day temperature
  • 7 hours of sunshine per day
  • 14 days with some rainfall in May in Oslo14
    14 days with some rainfall
  • 5°C minimum night-time temperature in May in Oslo5
    5°C min night temperature
  • 17 hours of daylight per day in May in Oslo17
    17 hours of daylight per day
  • No heat & humidity in May in Oslo0
    No heat & humidity
  • 56 mm monthly rainfall in May in Oslo56
    56 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in May in Oslo4
    4 (Moderate) UV index
  • 9°C sea temperature in May in Oslo9
    9°C sea temperature

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The May weather guide for Norway (Oslo) 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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More about Norway

How warm is it in Oslo in May?

Daytime temperatures usually reach 15°C in Oslo in May, falling to 5°C at night.

How sunny is it in Oslo in May?

There are normally 7 hours of bright sunshine each day in Oslo in May - that's 41% of daylight hours.

Is the sea cold around Oslo in May?

The average sea temperature around Oslo in May is 9°C.

Does it rain in Oslo in May?

There are usually 14 days with some rain in Oslo in May and the average monthly rainfall is 56mm.

Oslo May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 04:15 20:15
Friday, 16th May 2025 03:37 20:51
Saturday, 31st May 2025 03:08 21:22

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