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Northern Ireland weather in May 2021
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Below are average maximum temperatures at popular destinations in Northern Ireland in May. Select a destination to see more weather parameters.
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The May 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.
How warm is it in Northern Ireland in May?
Daytime temperatures usually reach 14°C in Belfast, Northern Ireland in May, falling to 6°C at night.
How sunny is it in Northern Ireland in May?
There are normally 6 hours of bright sunshine each day in Belfast, Northern Ireland in May - that's 37% of daylight hours.
Is the sea cold around Northern Ireland in May?
The average sea temperature around Belfast, Northern Ireland in May is 9°C.
Does it rain in Northern Ireland in May?
There are usually 16 days with some rain in Belfast, Northern Ireland in May and the average monthly rainfall is 65mm.
Metric (°C / mm) | Imperial (°F / inches)
Northern Ireland sunrise & sunset times for May 2021
Browse the sunrise and sunset times for Northern Ireland in May 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.
|Date||Sunrise times||Sunset times|
|Saturday, 1st May 2021||05:45||20:58|
|Sunday, 16th May 2021||05:16||21:25|
|Monday, 31st May 2021||04:56||21:48|
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