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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Northern Ireland holiday rentals

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Northern Ireland cottages

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Northern Ireland hotels

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Northern Ireland camping & hostels

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Northern Ireland car hire

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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.

Northern Ireland sunrise & sunset times for August 2021

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

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