St Helier weather in January 2026

Expect daytime maximum temperatures of 46°F in St Helier, Jersey in January based on long-term weather averages. There are 2 hours of sunshine per day on average with 20 days with some rainfall and typically 4.0 inches of rainfall in the month.

  • 46°F maximum daytime temperature in January in St Helier46
    46°F max day temperature
  • 2 hours of sunshine per day
  • 20 days with some rainfall in January in St Helier20
    20 days with some rainfall
  • 39°F minimum night-time temperature in January in St Helier39
    39°F 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
  • 4.0 inches monthly rainfall in January in St Helier4.0
    4.0 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in January in St Helier1
    1 (Low) UV index
  • 48°F sea temperature in January in St Helier48
    48°F 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)  |  Imperial (°F)

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How warm is it in St Helier in January?

Daytime temperatures usually reach 46°F in St Helier in January, falling to 39°F 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.

How warm is the sea around St Helier in January?

The average sea temperature around St Helier in January is 48°F.

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 4.0 inches.

St Helier January sunrise & sunset times

Browse the sunrise and sunset times for St Helier in January 2026. Select a month to view St Helier sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 08:03 16:21
Friday, 16th January 2026 07:57 16:40
Saturday, 31st January 2026 07:41 17:03

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