Northern Ireland weather in January 2021

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

7
Belfast
6
Londonderry

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The January 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

Find holiday rentals in Northern Ireland including holiday homes, self-catering accommodation, B&Bs, shared space, home swaps and short-term lets.

Northern Ireland cottages

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Northern Ireland hotels

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Northern Ireland camping & hostels

Looking for camping holidays in Northern Ireland? Browse hostels and campsites for camping, glamping, yurts, cabins, tree houses, youth hostels and caravan parks.

Northern Ireland car hire

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How cold is it in Northern Ireland in January?

Daytime temperatures usually reach 7°C in Belfast, Northern Ireland in January, falling to 1°C at night.

How sunny is it in Northern Ireland in January?

There are normally 2 hours of bright sunshine each day in Belfast, Northern Ireland in January - that's 20% of daylight hours.

Is the sea cold around Northern Ireland in January?

The average sea temperature around Belfast, Northern Ireland in January is 9°C.

Does it rain in Northern Ireland in January?

There are usually 20 days with some rain in Belfast, Northern Ireland in January and the average monthly rainfall is 101mm.

Northern Ireland sunrise & sunset times for January 2021

Browse the sunrise & sunset times for Northern Ireland in January 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.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec