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Northern Ireland weather in January 2025
Expect 45°F daytime maximum temperatures in the shade with on average 2 hours of sunshine per day in Northern Ireland in January. Check more long-term weather averages for Northern Ireland in January before you book your next holiday to Northern Ireland in 2025/2026.
- 4545°F max day temperature
- 2 hours of sunshine per day
- 2020 days with some rainfall
- 3434°F min night temperature
- 88 hours of daylight per day
- 0No heat & humidity
- 4.04.0 inches of monthly rainfall
- 0No UV (Maximum) Index UV index
- 4848°F sea temperature
More about Northern Ireland
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Northern Ireland by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Northern Ireland
The January weather guide for Northern Ireland (Belfast) 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.
Top Northern Ireland destinations
Below are average maximum temperatures at popular countries, regions and places in Northern Ireland in January. Select a holiday destination to see more weather parameters.
All Northern Ireland destinations
- Antrim
- Armagh
- Ballycastle
- Ballymena
- Ballymoney
- Bangor
- Belfast
- Carrickfergus
- Coleraine
- Downpatrick
- Dungannon
- Enniskillen
- Hillsborough
- Kilkeel
- Larne
- Londonderry
- Magherafelt
- Newcastle
- Newry
- Omagh
- Portrush
- Portstewart
- Strabane
Metric (°C) | Imperial (°F)
More about the UK
How cold is it in Northern Ireland in January?
Daytime temperatures usually reach 45°F in Belfast, Northern Ireland in January, falling to 34°F at night.
How sunny is it in Northern Ireland in January?
There are normally 2 hours of bright sunshine each day in Belfast, Northern Ireland in January - that's 20% of daylight hours.
How warm is the sea around Northern Ireland in January?
The average sea temperature around Belfast, Northern Ireland in January is 48°F.
Does it rain in Northern Ireland in January?
There are usually 20 days with some rain in Belfast, Northern Ireland in January and the average monthly rainfall is 4.0 inches.
Northern Ireland January sunrise & sunset times
Browse the sunrise and sunset times for Northern Ireland in January 2025. Select a month to view Northern Ireland sunrise and sunset times for the next 12 months. The Northern Ireland sunrise and sunset times shown below are for Belfast.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Wednesday, 1st January 2025 | 08:46 | 16:09 |
Thursday, 16th January 2025 | 08:36 | 16:32 |
Friday, 31st January 2025 | 08:14 | 17:01 |
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