Jersey weather in July 2025

Expect 20°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Jersey in July. Check more long-term weather averages for Jersey in July before you book your next holiday to Jersey in 2025/2026.

  • 20°C maximum daytime temperature in July in Jersey (St Helier)20
    20°C max day temperature
  • 8 hours of sunshine per day
  • 10 days with some rainfall in July in Jersey (St Helier)10
    10 days with some rainfall
  • 14°C minimum night-time temperature in July in Jersey (St Helier)14
    14°C min night temperature
  • 16 hours of daylight per day in July in Jersey (St Helier)16
    16 hours of daylight per day
  • No heat & humidity in July in Jersey (St Helier)0
    No heat & humidity
  • 42 mm monthly rainfall in July in Jersey (St Helier)42
    42 mm of monthly rainfall
  • UV (maximum) index 7 (High) in July in Jersey (St Helier)7
    7 (High) UV index
  • 17°C sea temperature in July in Jersey (St Helier)17
    17°C sea temperature

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The July 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 hot is it in Jersey in July?

Daytime temperatures usually reach 20°C in St Helier, Jersey in July, falling to 14°C at night.

How sunny is it in Jersey in July?

There are normally 8 hours of bright sunshine each day in St Helier, Jersey in July - that's 53% of daylight hours.

How warm is the sea around Jersey in July?

The average sea temperature around St Helier, Jersey in July is 17°C.

Does it rain in Jersey in July?

There are usually 10 days with some rain in St Helier, Jersey in July and the average monthly rainfall is 42mm.

Jersey July sunrise & sunset times

Browse the sunrise and sunset times for Jersey in July 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
Tuesday, 1st July 2025 04:08 20:17
Wednesday, 16th July 2025 04:21 20:07
Thursday, 31st July 2025 04:40 19:49

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