Northern Ireland weather in August 2021

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Below are average maximum temperatures at popular destinations in Northern Ireland in August. Select a destination to see more weather parameters.

18
Belfast
17
Londonderry

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The August weather guide for Northern Ireland 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.

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How hot is it in Northern Ireland in August?

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

How sunny is it in Northern Ireland in August?

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

How warm is the sea around Northern Ireland in August?

The average sea temperature around Belfast, Northern Ireland in August is 13°C.

Does it rain in Northern Ireland in August?

There are usually 17 days with some rain in Belfast, Northern Ireland in August and the average monthly rainfall is 89mm.

Metric (°C / mm) | Imperial (°F / inches)

Northern Ireland sunrise & sunset times for August 2021

Browse the sunrise and sunset times for Northern Ireland in August 2021. Select a month to view Northern Ireland sunrise & sunset times for the next 12 months. The Northern Ireland sunrise and sunset times shown below are for Belfast.

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