Northern Ireland weather in December 2021

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

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The December 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 warm is it in Northern Ireland in December?

Daytime temperatures usually reach 8°C in Belfast, Northern Ireland in December, falling to 2°C at night.

How sunny is it in Northern Ireland in December?

There are normally 1 hour of bright sunshine each day in Belfast, Northern Ireland in December - that's 18% of daylight hours.

Is the sea cold around Northern Ireland in December?

The average sea temperature around Belfast, Northern Ireland in December is 10°C.

Does it rain in Northern Ireland in December?

There are usually 20 days with some rain in Belfast, Northern Ireland in December and the average monthly rainfall is 94mm.

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

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Northern Ireland sunrise & sunset times for December 2021

Browse the sunrise and sunset times for Northern Ireland in December 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.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st December 2021 08:23 16:03
Thursday, 16th December 2021 08:41 15:58
Friday, 31st December 2021 08:46 16:08
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