Portstewart weather in March 2026

Q: How warm is it in Portstewart in March?

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

Q: 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.

Q: Is the sea cold around Portstewart in March?

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

Q: 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.

Expect daytime maximum temperatures of 48°F in Portstewart, 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 3.6 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
3.6
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 (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) | Imperial (°F)

More about the UK

How warm is it in Portstewart in March?

Daytime temperatures usually reach 48°F in Portstewart in March, falling to 36°F 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.

How warm is the sea around Portstewart in March?

The average sea temperature around Portstewart in March is 45°F.

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 3.6 inches.

Portstewart March sunrise & sunset times

Browse the sunrise and sunset times for Portstewart in March 2026. Select a month to view Portstewart sunrise and sunset times for the next 12 months.

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