Larne weather in August 2026

Q: How warm is it in Larne in August?

Daytime temperatures usually reach 17°C in Larne in August, falling to 10°C at night.

Q: How sunny is it in Larne in August?

There are normally 5 hours of bright sunshine each day in Larne in August - that's 31% of daylight hours.

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

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

Q: Does it rain in Larne in August?

There are usually 17 days with some rain in Larne in August and the average monthly rainfall is 102mm.

Expect daytime maximum temperatures of 63°F in Larne, Northern Ireland in August based on long-term weather averages. There are 5 hours of sunshine per day on average with 17 days with some rainfall and typically 4.0 inches of rainfall in the month.

63
63°F max day temperature
5
5 hours of sunshine per day
17
17 days with some rainfall
50
50°F min night temperature
15
15 hours of daylight per day
0
No heat & humidity
4.0
4.0 inches of monthly rainfall
5
5 (Moderate) UV index
55
55°F sea temperature

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The August 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)