Reykjavik weather in May 2025

Expect 48°F daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Reykjavik in May. Check more long-term weather averages for Reykjavik in May before you book your next holiday to Iceland in 2025/2026.

  • 48°F maximum daytime temperature in May in Reykjavik48
    48°F max day temperature
  • 6 hours of sunshine per day
  • 16 days with some rainfall in May in Reykjavik16
    16 days with some rainfall
  • 37°F minimum night-time temperature in May in Reykjavik37
    37°F min night temperature
  • 19 hours of daylight per day in May in Reykjavik19
    19 hours of daylight per day
  • No heat & humidity in May in Reykjavik0
    No heat & humidity
  • 2.4 inches monthly rainfall in May in Reykjavik2.4
    2.4 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in May in Reykjavik3
    3 (Moderate) UV index
  • 43°F sea temperature in May in Reykjavik43
    43°F sea temperature

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The May weather guide for Iceland (Reykjavik) 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)

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More about Iceland

How warm is it in Reykjavik in May?

Daytime temperatures usually reach 48°F in Reykjavik in May, falling to 37°F at night.

How sunny is it in Reykjavik in May?

There are normally 6 hours of bright sunshine each day in Reykjavik in May - that's 32% of daylight hours.

How warm is the sea around Reykjavik in May?

The average sea temperature around Reykjavik in May is 43°F.

Does it rain in Reykjavik in May?

There are usually 16 days with some rain in Reykjavik in May and the average monthly rainfall is 2.4 inches.

Reykjavik May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 04:59 21:53
Friday, 16th May 2025 04:09 22:41
Saturday, 31st May 2025 03:25 23:28

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