Larne weather in August 2025

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 63°F daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Larne in August. Check more long-term weather averages for Larne in August before you book your next holiday to Northern Ireland in 2025/2026.

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

More about Larne

Larne by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Northern Ireland

LivingSocial: Latest offers on holidays to Ireland

Sale

Explore city breaks & country retreats in Ireland
Destinations include Dublin, Cork, Belfast, Donegal & Kerry
Filter deals by destination & price. Browse by best discount

Go to LivingSocial deal >>

View all LivingSocial offers

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)