Larne weather in January 2025

Q: How cold is it in Larne in January?

Daytime temperatures usually reach 6°C in Larne in January, falling to 1°C at night.

Q: How sunny is it in Larne in January?

There are normally 1 hour of bright sunshine each day in Larne in January - that's 18% of daylight hours.

Q: Is the sea cold around Larne in January?

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

Q: Does it rain in Larne in January?

There are usually 20 days with some rain in Larne in January and the average monthly rainfall is 117mm.

Expect 43°F daytime maximum temperatures in the shade with on average 1 hours of sunshine per day in Larne in January. Check more long-term weather averages for Larne in January before you book your next holiday to Northern Ireland in 2025/2026.

43
43°F max day temperature
1
1 hour 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
4.6
4.6 inches of monthly rainfall
0
No UV (Maximum) Index UV index
48
48°F sea temperature

More about Larne

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The January weather guide for Northern Ireland (Larne) 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)