Larne weather in May 2026

Q: How warm is it in Larne in May?

Daytime temperatures usually reach 13°C in Larne in May, falling to 5°C at night.

Q: How sunny is it in Larne in May?

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

Q: Is the sea cold around Larne in May?

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

Q: Does it rain in Larne in May?

There are usually 16 days with some rain in Larne in May and the average monthly rainfall is 71mm.

Expect daytime maximum temperatures of 13°C in Larne, Northern Ireland in May based on long-term weather averages. There are 6 hours of sunshine per day on average with 16 days with some rainfall and typically 71 mm of rainfall in the month.

13
13°C max day temperature
6
6 hours of sunshine per day
16
16 days with some rainfall
5
5°C min night temperature
16
16 hours of daylight per day
0
No heat & humidity
71
71 mm of monthly rainfall
5
5 (Moderate) UV index
9
9°C sea temperature

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The May weather guide for Northern Ireland (Larne) 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)