Larne weather in October 2025

Q: How warm is it in Larne in October?

Daytime temperatures usually reach 12°C in Larne in October, falling to 6°C at night.

Q: How sunny is it in Larne in October?

There are normally 3 hours of bright sunshine each day in Larne in October - that's 25% of daylight hours.

Q: How warm is the sea around Larne in October?

The average sea temperature around Larne in October is 13°C.

Q: Does it rain in Larne in October?

There are usually 19 days with some rain in Larne in October and the average monthly rainfall is 123mm.

Expect 12°C daytime maximum temperatures in the shade with on average 3 hours of sunshine per day in Larne in October. Check more long-term weather averages for Larne in October before you book your next holiday to Northern Ireland in 2025/2026.

12
12°C max day temperature
3
3 hours of sunshine per day
19
19 days with some rainfall
6
6°C min night temperature
10
10 hours of daylight per day
0
No heat & humidity
123
123 mm of monthly rainfall
2
2 (Low) UV index
13
13°C sea temperature

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The October 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 / mm) | Imperial (°F / inches)