Carrickfergus weather in August 2025

Q: How hot is it in Carrickfergus in August?

Daytime temperatures usually reach 18°C in Carrickfergus in August, falling to 11°C at night.

Q: How sunny is it in Carrickfergus in August?

There are normally 5 hours of bright sunshine each day in Carrickfergus in August - that's 32% of daylight hours.

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

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

Q: Does it rain in Carrickfergus in August?

There are usually 17 days with some rain in Carrickfergus in August and the average monthly rainfall is 87mm.

Expect 18°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Carrickfergus in August. Check more long-term weather averages for Carrickfergus in August before you book your next holiday to Northern Ireland in 2025/2026.

18
18°C max day temperature
5
5 hours of sunshine per day
17
17 days with some rainfall
11
11°C min night temperature
15
15 hours of daylight per day
0
No heat & humidity
87
87 mm of monthly rainfall
5
5 (Moderate) UV index
13
13°C sea temperature

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The August weather guide for Northern Ireland (Carrickfergus) 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 hot is it in Carrickfergus in August?

Daytime temperatures usually reach 18°C in Carrickfergus in August, falling to 11°C at night.

How sunny is it in Carrickfergus in August?

There are normally 5 hours of bright sunshine each day in Carrickfergus in August - that's 32% of daylight hours.

How warm is the sea around Carrickfergus in August?

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

Does it rain in Carrickfergus in August?

There are usually 17 days with some rain in Carrickfergus in August and the average monthly rainfall is 87mm.

Carrickfergus August sunrise & sunset times

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

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