Portrush weather in March 2025

Q: How warm is it in Portrush in March?

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

Q: How sunny is it in Portrush in March?

There are normally 3 hours of bright sunshine each day in Portrush in March - that's 25% of daylight hours.

Q: Is the sea cold around Portrush in March?

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

Q: Does it rain in Portrush in March?

There are usually 20 days with some rain in Portrush in March and the average monthly rainfall is 91mm.

Expect 48°F daytime maximum temperatures in the shade with on average 3 hours of sunshine per day in Portrush in March. Check more long-term weather averages for Portrush in March before you book your next holiday to Northern Ireland in 2025/2026.

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
3.6
3.6 inches of monthly rainfall
2
2 (Low) UV index
45
45°F sea temperature

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The March weather guide for Northern Ireland (Portrush) 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)