Jersey weather in May 2025

Expect 16°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Jersey in May. Check more long-term weather averages for Jersey in May before you book your next holiday to Jersey in 2025/2026.

  • 16°C maximum daytime temperature in May in Jersey (St Helier)16
    16°C max day temperature
  • 8 hours of sunshine per day
  • 13 days with some rainfall in May in Jersey (St Helier)13
    13 days with some rainfall
  • 9°C minimum night-time temperature in May in Jersey (St Helier)9
    9°C min night temperature
  • 15 hours of daylight per day in May in Jersey (St Helier)15
    15 hours of daylight per day
  • No heat & humidity in May in Jersey (St Helier)0
    No heat & humidity
  • 56 mm monthly rainfall in May in Jersey (St Helier)56
    56 mm of monthly rainfall
  • UV (maximum) index 6 (High) in May in Jersey (St Helier)6
    6 (High) UV index
  • 12°C sea temperature in May in Jersey (St Helier)12
    12°C sea temperature

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The May weather guide for Jersey, represented by St Helier, (St Helier) 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 Jersey in May?

Daytime temperatures usually reach 16°C in St Helier, Jersey in May, falling to 9°C at night.

How sunny is it in Jersey in May?

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

How warm is the sea around Jersey in May?

The average sea temperature around St Helier, Jersey in May is 12°C.

Does it rain in Jersey in May?

There are usually 13 days with some rain in St Helier, Jersey in May and the average monthly rainfall is 56mm.

Jersey May sunrise & sunset times

Browse the sunrise and sunset times for Jersey in May 2025. Select a month to view Jersey sunrise and sunset times for the next 12 months. The Jersey sunrise and sunset times shown below are for St Helier.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 04:47 19:25
Friday, 16th May 2025 04:24 19:46
Saturday, 31st May 2025 04:09 20:04

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