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 daytime maximum temperatures of 57°F in Newcastle, 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 3.1 inches of rainfall in the month.

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
3.1
3.1 inches of monthly rainfall
5
5 (Moderate) UV index
50
50°F sea temperature

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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) | Imperial (°F)