Bangor weather in January 2026

Q: How cold is it in Bangor in January?

Daytime temperatures usually reach 7°C in Bangor in January, falling to 2°C at night.

Q: How sunny is it in Bangor in January?

There are normally 2 hours of bright sunshine each day in Bangor in January - that's 21% of daylight hours.

Q: Is the sea cold around Bangor in January?

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

Q: Does it rain in Bangor in January?

There are usually 20 days with some rain in Bangor in January and the average monthly rainfall is 98mm.

Expect daytime maximum temperatures of 7°C in Bangor, Northern Ireland 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 98 mm of rainfall in the month.

7
7°C max day temperature
2
2 hours of sunshine per day
20
20 days with some rainfall
2
2°C min night temperature
8
8 hours of daylight per day
0
No heat & humidity
98
98 mm of monthly rainfall
0
No UV (Maximum) Index UV index
9
9°C sea temperature

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The January weather guide for Northern Ireland (Bangor) 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)