Newcastle weather in July 2025

Q: How hot is it in Newcastle in July?

Daytime temperatures usually reach 18°C in Newcastle in July, falling to 10°C at night.

Q: How sunny is it in Newcastle in July?

There are normally 5 hours of bright sunshine each day in Newcastle in July - that's 31% of daylight hours.

Q: How warm is the sea around Newcastle in July?

The average sea temperature around Newcastle in July is 14°C.

Q: Does it rain in Newcastle in July?

There are usually 14 days with some rain in Newcastle in July and the average monthly rainfall is 81mm.

Expect 18°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Newcastle in July. Check more long-term weather averages for Newcastle in July before you book your next holiday to Northern Ireland in 2025/2026.

18
18°C max day temperature
5
5 hours of sunshine per day
14
14 days with some rainfall
10
10°C min night temperature
17
17 hours of daylight per day
0
No heat & humidity
81
81 mm of monthly rainfall
6
6 (High) UV index
14
14°C sea temperature

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The July 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)