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Jersey weather in December 2025
Expect daytime maximum temperatures of 9°C in Jersey in December based on long-term weather averages. There are 2 hours of sunshine per day on average with 19 days with some rainfall and typically 112 mm of rainfall in the month.
- 9°C max day temperature
9 - 2 hours of sunshine per day
- 19 days with some rainfall
19 - 5°C min night temperature
5 - 8 hours of daylight per day
8 - No heat & humidity
0 - 112 mm of monthly rainfall
112 - 1 (Low) UV index
1 - 11°C sea temperature
11
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The December 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)
How warm is it in Jersey in December?
Daytime temperatures usually reach 9°C in St Helier, Jersey in December, falling to 5°C at night.
How sunny is it in Jersey in December?
There are normally 2 hours of bright sunshine each day in St Helier, Jersey in December - that's 23% of daylight hours.
Is the sea cold around Jersey in December?
The average sea temperature around St Helier, Jersey in December is 11°C.
Does it rain in Jersey in December?
There are usually 19 days with some rain in St Helier, Jersey in December and the average monthly rainfall is 112mm.
Jersey December sunrise & sunset times
Browse the sunrise and sunset times for Jersey in December 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 |
|---|---|---|
| Monday, 1st December 2025 | 07:42 | 16:13 |
| Tuesday, 16th December 2025 | 07:57 | 16:11 |
| Wednesday, 31st December 2025 | 08:03 | 16:20 |
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