Jersey weather in January 2025

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

  • 8°C maximum daytime temperature in January in Jersey (St Helier)8
    8°C max day temperature
  • 2 hours of sunshine per day
  • 20 days with some rainfall in January in Jersey (St Helier)20
    20 days with some rainfall
  • 4°C minimum night-time temperature in January in Jersey (St Helier)4
    4°C min night temperature
  • 9 hours of daylight per day in January in Jersey (St Helier)9
    9 hours of daylight per day
  • No heat & humidity in January in Jersey (St Helier)0
    No heat & humidity
  • 102 mm monthly rainfall in January in Jersey (St Helier)102
    102 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Jersey (St Helier)1
    1 (Low) UV index
  • 9°C sea temperature in January in Jersey (St Helier)9
    9°C sea temperature

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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 Jersey in January?

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

How sunny is it in Jersey in January?

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

Is the sea cold around Jersey in January?

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

Does it rain in Jersey in January?

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

Jersey January sunrise & sunset times

Browse the sunrise and sunset times for Jersey in January 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
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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