Coleraine weather in March 2026

Q: How warm is it in Coleraine in March?

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

Q: How sunny is it in Coleraine in March?

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

Q: Is the sea cold around Coleraine in March?

The average sea temperature around Coleraine in March is 7°C.

Q: Does it rain in Coleraine in March?

There are usually 19 days with some rain in Coleraine in March and the average monthly rainfall is 78mm.

Expect daytime maximum temperatures of 48°F in Coleraine, Northern Ireland in March based on long-term weather averages. There are 3 hours of sunshine per day on average with 20 days with some rainfall and typically 3.3 inches of rainfall in the month.

48
48°F max day temperature
3
3 hours of sunshine per day
20
20 days with some rainfall
36
36°F min night temperature
12
12 hours of daylight per day
0
No heat & humidity
3.3
3.3 inches of monthly rainfall
2
2 (Low) UV index

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The March weather guide for Northern Ireland (Coleraine) 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.

Metric (°C) | Imperial (°F)