Northern Ireland weather in March 2025

Expect 9°C daytime maximum temperatures in the shade with on average 3 hours of sunshine per day in Northern Ireland in March. Check more long-term weather averages for Northern Ireland in March before you book your next holiday to Northern Ireland in 2025/2026.

9
9°C max day temperature
3
3 hours of sunshine per day
19
19 days with some rainfall
2
2°C min night temperature
12
12 hours of daylight per day
0
No heat & humidity
78
78 mm of monthly rainfall
2
2 (Low) UV index
7
7°C sea temperature

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The March weather guide for Northern Ireland (Belfast) 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.

Top Northern Ireland destinations

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

9
Belfast
8
Londonderry

All Northern Ireland destinations

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

More about the UK

How warm is it in Northern Ireland in March?

Daytime temperatures usually reach 9°C in Belfast, Northern Ireland in March, falling to 2°C at night.

How sunny is it in Northern Ireland in March?

There are normally 3 hours of bright sunshine each day in Belfast, Northern Ireland in March - that's 28% of daylight hours.

Is the sea cold around Northern Ireland in March?

The average sea temperature around Belfast, Northern Ireland in March is 7°C.

Does it rain in Northern Ireland in March?

There are usually 19 days with some rain in Belfast, Northern Ireland in March and the average monthly rainfall is 78mm.

Northern Ireland March sunrise & sunset times

Browse the sunrise and sunset times for Northern Ireland in March 2025. Select a month to view Northern Ireland sunrise and sunset times for the next 12 months. The Northern Ireland sunrise and sunset times shown below are for Belfast.

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