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 17°C 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.

17
17°C max day temperature
5
5 hours of sunshine per day
17
17 days with some rainfall
10
10°C min night temperature
15
15 hours of daylight per day
0
No heat & humidity
102
102 mm of monthly rainfall
5
5 (Moderate) UV index
13
13°C sea temperature

More about Larne

Larne by month

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

Recommended for Northern Ireland

Enjoy Travel discount code: up to 20% off car hire

Exclusive

Save up to 20% on car hire worldwide with Enjoy Travel
Book car hire for destinations in the UK, Europe & beyond
Discount code cannot be combined with other promotions

Show discount code

******ENJ

Redeem Enjoy Travel discount code >>

Expires at 23:59 on Tuesday 31st Dec 2024 · View all Enjoy Travel 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 / mm) | Imperial (°F / inches)