St Helier weather in January 2025

Expect 8°C daytime maximum temperatures in the shade with on average 2 hours of sunshine per day in St Helier in January. Check more long-term weather averages for St Helier in January before you book your next holiday to Jersey in 2025/2026.

  • 8°C maximum daytime temperature in January in St Helier8
    8°C max day temperature
  • 2 hours of sunshine per day
  • 20 days with some rainfall in January in St Helier20
    20 days with some rainfall
  • 4°C minimum night-time temperature in January in St Helier4
    4°C min night temperature
  • 9 hours of daylight per day in January in St Helier9
    9 hours of daylight per day
  • No heat & humidity in January in St Helier0
    No heat & humidity
  • 102 mm monthly rainfall in January in St Helier102
    102 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in January in St Helier1
    1 (Low) UV index
  • 9°C sea temperature in January in St Helier9
    9°C sea temperature

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St Helier by month

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The January 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 January?

Daytime temperatures usually reach 8°C in St Helier in January, falling to 4°C at night.

How sunny is it in St Helier in January?

There are normally 2 hours of bright sunshine each day in St Helier in January - that's 22% of daylight hours.

Is the sea cold around St Helier in January?

The average sea temperature around St Helier in January is 9°C.

Does it rain in St Helier in January?

There are usually 20 days with some rain in St Helier in January and the average monthly rainfall is 102mm.

St Helier January sunrise & sunset times

Browse the sunrise and sunset times for St Helier in January 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 January 2025 08:03 16:21
Thursday, 16th January 2025 07:57 16:40
Friday, 31st January 2025 07:41 17:04

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