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Ballycastle weather in August 2025
Expect 17°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Ballycastle in August. Check more long-term weather averages for Ballycastle in August before you book your next holiday to Northern Ireland in 2025/2026.
- 1717°C max day temperature
- 4 hours of sunshine per day
- 1919 days with some rainfall
- 1010°C min night temperature
- 1515 hours of daylight per day
- 0No heat & humidity
- 9898 mm of monthly rainfall
- 55 (Moderate) UV index
- 1414°C sea temperature
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Recommended for Northern Ireland
The August weather guide for Northern Ireland (Ballycastle) 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 Ballycastle in August?
Daytime temperatures usually reach 17°C in Ballycastle in August, falling to 10°C at night.
How sunny is it in Ballycastle in August?
There are normally 4 hours of bright sunshine each day in Ballycastle in August - that's 30% of daylight hours.
How warm is the sea around Ballycastle in August?
The average sea temperature around Ballycastle in August is 14°C.
Does it rain in Ballycastle in August?
There are usually 19 days with some rain in Ballycastle in August and the average monthly rainfall is 98mm.
Ballycastle August sunrise & sunset times
Browse the sunrise and sunset times for Ballycastle in August 2025. Select a month to view Ballycastle sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Friday, 1st August 2025 | 04:33 | 20:28 |
Saturday, 16th August 2025 | 05:01 | 19:56 |
Sunday, 31st August 2025 | 05:29 | 19:20 |
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