Londonderry weather in August 2025

Q: How warm is it in Londonderry in August?

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

Q: How sunny is it in Londonderry in August?

There are normally 4 hours of bright sunshine each day in Londonderry in August - that's 28% of daylight hours.

Q: Does it rain in Londonderry in August?

There are usually 20 days with some rain in Londonderry in August and the average monthly rainfall is 99mm.

Expect 17°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Londonderry in August. Check more long-term weather averages for Londonderry in August before you book your next holiday to Northern Ireland in 2025/2026.

17
17°C max day temperature
4
4 hours of sunshine per day
20
20 days with some rainfall
10
10°C min night temperature
15
15 hours of daylight per day
0
No heat & humidity
99
99 mm of monthly rainfall
5
5 (Moderate) UV index

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The August weather guide for Northern Ireland (Londonderry) 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)

More about the UK

How warm is it in Londonderry in August?

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

How sunny is it in Londonderry in August?

There are normally 4 hours of bright sunshine each day in Londonderry in August - that's 28% of daylight hours.

Does it rain in Londonderry in August?

There are usually 20 days with some rain in Londonderry in August and the average monthly rainfall is 99mm.

Londonderry August sunrise & sunset times

Browse the sunrise and sunset times for Londonderry in August 2025. Select a month to view Londonderry sunrise and sunset times for the next 12 months.

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