Helsinki weather in May 2020

  • 15°C maximum daytime temperature in May in Helsinki15
    15°C max day temperature
  • 8 hours of sunshine per day
  • 10 days with some rainfall in May in Helsinki10
    10 days with some rainfall
  • 5°C minimum night-time temperature in May in Helsinki5
    5°C min night temperature
  • 17 hours of daylight per day in May in Helsinki17
    17 hours of daylight per day
  • No heat & humidity in May in Helsinki0
    No heat & humidity
  • 33 mm monthly rainfall in May in Helsinki33
    33 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in May in Helsinki4
    4 (Moderate) UV index
  • 5°C sea temperature in May in Helsinki5
    5°C sea temperature
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The May weather guide for Helsinki, Finland 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.

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Metric (°C / mm)  |  Imperial (°F / inches)

Guide to Helsinki weather in May

The average maximum daytime temperature in Helsinki in May is a comfortable 15°C (59°F). The average night-time temperature is usually a cold 5°C (41°F). There are usually 8 hours of bright sunshine each day, which represents 48% of the 17 hours of daylight.

Expect 33mm (1.3 inches) of rainfall across the whole of May with 10 days with some rain falling. Maximum UV levels will be moderate (4 UV index) at midday when the skies are clear.

The average sea temperature in and around Helsinki in May is 5°C (41°F).

Helsinki sunrise & sunset times for May 2020

Browse the sunrise & sunset times for Helsinki in May 2020. Select a month to view Helsinki sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st May 2020 05:16 21:20
Saturday, 16th May 2020 04:38 21:57
Sunday, 31st May 2020 04:09 22:28
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