- Book a 2 or 3 night spa break for couples
- Enjoy access to the gym, pool & restaurant
- Stays can include afternoon tea & breakfast
Portstewart weather in May 2025
Expect 13°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Portstewart in May. Check more long-term weather averages for Portstewart in May before you book your next holiday to Northern Ireland in 2025/2026.
- 1313°C max day temperature
- 6 hours of sunshine per day
- 1717 days with some rainfall
- 66°C min night temperature
- 1616 hours of daylight per day
- 0No heat & humidity
- 6666 mm of monthly rainfall
- 55 (Moderate) UV index
- 99°C sea temperature
More about Portstewart
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Recommended for Northern Ireland
The May 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 May?
Daytime temperatures usually reach 13°C in Portstewart in May, falling to 6°C at night.
How sunny is it in Portstewart in May?
There are normally 6 hours of bright sunshine each day in Portstewart in May - that's 35% of daylight hours.
Is the sea cold around Portstewart in May?
The average sea temperature around Portstewart in May is 9°C.
Does it rain in Portstewart in May?
There are usually 17 days with some rain in Portstewart in May and the average monthly rainfall is 66mm.
Portstewart May sunrise & sunset times
Browse the sunrise and sunset times for Portstewart in May 2025. Select a month to view Portstewart sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Thursday, 1st May 2025 | 04:46 | 20:03 |
Friday, 16th May 2025 | 04:16 | 20:31 |
Saturday, 31st May 2025 | 03:55 | 20:55 |
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