St Helier weather in October 2025

Expect 16°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in St Helier in October. Check more long-term weather averages for St Helier in October before you book your next holiday to Jersey in 2025/2026.

  • 16°C maximum daytime temperature in October in St Helier16
    16°C max day temperature
  • 4 hours of sunshine per day
  • 15 days with some rainfall in October in St Helier15
    15 days with some rainfall
  • 11°C minimum night-time temperature in October in St Helier11
    11°C min night temperature
  • 11 hours of daylight per day in October in St Helier11
    11 hours of daylight per day
  • No heat & humidity in October in St Helier0
    No heat & humidity
  • 91 mm monthly rainfall in October in St Helier91
    91 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in October in St Helier2
    2 (Low) UV index
  • 16°C sea temperature in October in St Helier16
    16°C sea temperature

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The October 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 St Helier in October?

Daytime temperatures usually reach 16°C in St Helier in October, falling to 11°C at night.

How sunny is it in St Helier in October?

There are normally 4 hours of bright sunshine each day in St Helier in October - that's 37% of daylight hours.

How warm is the sea around St Helier in October?

The average sea temperature around St Helier in October is 16°C.

Does it rain in St Helier in October?

There are usually 15 days with some rain in St Helier in October and the average monthly rainfall is 91mm.

St Helier October sunrise & sunset times

Browse the sunrise and sunset times for St Helier in October 2025. Select a month to view St Helier sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 06:08 17:47
Thursday, 16th October 2025 06:31 17:16
Friday, 31st October 2025 06:55 16:49

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