Iona weather in May 2025

Expect 13°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Iona in May. Check more long-term weather averages for Iona in May before you book your next holiday to Scotland in 2025/2026.

  • 13°C maximum daytime temperature in May in Iona13
    13°C max day temperature
  • 7 hours of sunshine per day
  • 16 days with some rainfall in May in Iona16
    16 days with some rainfall
  • 6°C minimum night-time temperature in May in Iona6
    6°C 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
  • 77 mm monthly rainfall in May in Iona77
    77 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in Iona5
    5 (Moderate) UV index
  • 9°C sea temperature in May in Iona9
    9°C 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 / mm)  |  Imperial (°F / inches)

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More about Scotland

How warm is it in Iona in May?

Daytime temperatures usually reach 13°C in Iona in May, falling to 6°C 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.

Is the sea cold around Iona in May?

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

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 77mm.

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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