Coleraine weather in May 2026

Q: How warm is it in Coleraine in May?

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

Q: How sunny is it in Coleraine in May?

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

Q: Is the sea cold around Coleraine in May?

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

Q: Does it rain in Coleraine in May?

There are usually 16 days with some rain in Coleraine in May and the average monthly rainfall is 65mm.

Expect daytime maximum temperatures of 14°C in Coleraine, Northern Ireland in May based on long-term weather averages. There are 6 hours of sunshine per day on average with 17 days with some rainfall and typically 66 mm of rainfall in the month.

14
14°C max day temperature
6
6 hours of sunshine per day
17
17 days with some rainfall
6
6°C min night temperature
16
16 hours of daylight per day
0
No heat & humidity
66
66 mm of monthly rainfall
5
5 (Moderate) UV index

More about Coleraine

Coleraine by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Northern Ireland

LivingSocial: Latest offers on holidays to Ireland

Sale

Explore city breaks & country retreats in Ireland
Destinations include Dublin, Cork, Belfast, Donegal & Kerry
Filter deals by destination & price. Browse by best discount

Go to LivingSocial deal >>

View all LivingSocial offers

The May weather guide for Northern Ireland (Coleraine) 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)