Newcastle weather in May 2025

Q: How warm is it in Newcastle in May?

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

Q: How sunny is it in Newcastle in May?

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

Q: Is the sea cold around Newcastle in May?

The average sea temperature around Newcastle in May is 10°C.

Q: Does it rain in Newcastle in May?

There are usually 16 days with some rain in Newcastle in May and the average monthly rainfall is 80mm.

Expect 14°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Newcastle in May. Check more long-term weather averages for Newcastle in May before you book your next holiday to Northern Ireland in 2025/2026.

14
14°C max day temperature
6
6 hours of sunshine per day
16
16 days with some rainfall
6
6°C min night temperature
16
16 hours of daylight per day
0
No heat & humidity
80
80 mm of monthly rainfall
5
5 (Moderate) UV index
10
10°C sea temperature

More about Newcastle

Newcastle by month

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

Recommended for Northern Ireland

Rural Retreats: Dog friendly holiday properties

Sale

Search for dog friendly cottages in the UK
Book stays in Sussex, Shropshire, Somerset & more
Filter search by selecting holiday preferences

Go to Rural Retreats deal >>

View all Rural Retreats offers

The May weather guide for Northern Ireland (Newcastle) 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)