Portstewart weather in March 2025

Expect 9°C daytime maximum temperatures in the shade with on average 3 hours of sunshine per day in Portstewart in March. Check more long-term weather averages for Portstewart 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
20
20 days with some rainfall
2
2°C min night temperature
12
12 hours of daylight per day
0
No heat & humidity
91
91 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 (Portstewart) 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 / mm) | Imperial (°F / inches)

More about the UK

How warm is it in Portstewart in March?

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

How sunny is it in Portstewart in March?

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

Is the sea cold around Portstewart in March?

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

Does it rain in Portstewart in March?

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

Portstewart March sunrise & sunset times

Browse the sunrise and sunset times for Portstewart in March 2025. Select a month to view Portstewart sunrise and sunset times for the next 12 months.

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