Newcastle weather in January 2025

Q: How cold is it in Newcastle in January?

Daytime temperatures usually reach 7°C in Newcastle in January, falling to 1°C at night.

Q: How sunny is it in Newcastle in January?

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

Q: Is the sea cold around Newcastle in January?

The average sea temperature around Newcastle in January is 8°C.

Q: Does it rain in Newcastle in January?

There are usually 20 days with some rain in Newcastle in January and the average monthly rainfall is 132mm.

Expect 45°F daytime maximum temperatures in the shade with on average 2 hours of sunshine per day in Newcastle in January. Check more long-term weather averages for Newcastle in January before you book your next holiday to Northern Ireland in 2025/2026.

45
45°F max day temperature
2
2 hours of sunshine per day
20
20 days with some rainfall
34
34°F min night temperature
8
8 hours of daylight per day
0
No heat & humidity
5.2
5.2 inches of monthly rainfall
0
No UV (Maximum) Index UV index
46
46°F sea temperature

More about Newcastle

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The January weather guide for Northern Ireland (Newcastle) 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)