Bangor weather in May 2025

Q: How warm is it in Bangor in May?

Daytime temperatures usually reach 14°C in Bangor in May, falling to 6°C at night.

Q: How sunny is it in Bangor in May?

There are normally 6 hours of bright sunshine each day in Bangor in May - that's 37% of daylight hours.

Q: Is the sea cold around Bangor in May?

The average sea temperature around Bangor in May is 9°C.

Q: Does it rain in Bangor in May?

There are usually 16 days with some rain in Bangor in May and the average monthly rainfall is 62mm.

Expect 57°F daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Bangor in May. Check more long-term weather averages for Bangor in May before you book your next holiday to Northern Ireland in 2025/2026.

57
57°F max day temperature
6
6 hours of sunshine per day
16
16 days with some rainfall
43
43°F min night temperature
16
16 hours of daylight per day
0
No heat & humidity
2.4
2.4 inches of monthly rainfall
5
5 (Moderate) UV index
48
48°F sea temperature

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The May weather guide for Northern Ireland (Bangor) 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)