Iona weather in May 2025

Expect daytime maximum temperatures of 55°F in Iona, Scotland in May based on long-term weather averages. There are 7 hours of sunshine per day on average with 16 days with some rainfall and typically 3.0 inches of rainfall in the month.

  • 55°F maximum daytime temperature in May in Iona55
    55°F max day temperature
  • 7 hours of sunshine per day
  • 16 days with some rainfall in May in Iona16
    16 days with some rainfall
  • 43°F minimum night-time temperature in May in Iona43
    43°F min night temperature
  • 16 hours of daylight per day in May in Iona16
    16 hours of daylight per day
  • No heat & humidity in May in Iona0
    No heat & humidity
  • 3.0 inches monthly rainfall in May in Iona3.0
    3.0 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in Iona5
    5 (Moderate) UV index
  • 48°F sea temperature in May in Iona48
    48°F sea temperature

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The May weather guide for Scotland (Iona) 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 Scotland

How warm is it in Iona in May?

Daytime temperatures usually reach 55°F in Iona in May, falling to 43°F at night.

How sunny is it in Iona in May?

There are normally 7 hours of bright sunshine each day in Iona in May - that's 40% of daylight hours.

How warm is the sea around Iona in May?

The average sea temperature around Iona in May is 48°F.

Does it rain in Iona in May?

There are usually 16 days with some rain in Iona in May and the average monthly rainfall is 3.0 inches.

Iona May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 04:40 20:07
Friday, 16th May 2025 04:09 20:37
Saturday, 31st May 2025 03:46 21:01

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