St Peter Port weather in May 2025

Expect 15°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in St Peter Port in May. Check more long-term weather averages for St Peter Port in May before you book your next holiday to Guernsey in 2025/2026.

  • 15°C maximum daytime temperature in May in St Peter Port15
    15°C max day temperature
  • 8 hours of sunshine per day
  • 13 days with some rainfall in May in St Peter Port13
    13 days with some rainfall
  • 9°C minimum night-time temperature in May in St Peter Port9
    9°C min night temperature
  • 15 hours of daylight per day in May in St Peter Port15
    15 hours of daylight per day
  • No heat & humidity in May in St Peter Port0
    No heat & humidity
  • 48 mm monthly rainfall in May in St Peter Port48
    48 mm of monthly rainfall
  • UV (maximum) index 6 (High) in May in St Peter Port6
    6 (High) UV index
  • 11°C sea temperature in May in St Peter Port11
    11°C sea temperature

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The May weather guide for Guernsey, represented by St Peter Port, (St Peter Port) 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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How warm is it in St Peter Port in May?

Daytime temperatures usually reach 15°C in St Peter Port in May, falling to 9°C at night.

How sunny is it in St Peter Port in May?

There are normally 8 hours of bright sunshine each day in St Peter Port in May - that's 50% of daylight hours.

Is the sea cold around St Peter Port in May?

The average sea temperature around St Peter Port in May is 11°C.

Does it rain in St Peter Port in May?

There are usually 13 days with some rain in St Peter Port in May and the average monthly rainfall is 48mm.

St Peter Port May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 04:48 19:28
Friday, 16th May 2025 04:25 19:49
Saturday, 31st May 2025 04:09 20:07

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