Northern Ireland weather in July 2025

Q: How hot is it in Northern Ireland in July?

Daytime temperatures usually reach 18°C in Belfast, Northern Ireland in July, falling to 11°C at night.

Q: How sunny is it in Northern Ireland in July?

There are normally 5 hours of bright sunshine each day in Belfast, Northern Ireland in July - that's 30% of daylight hours.

Q: How warm is the sea around Northern Ireland in July?

The average sea temperature around Belfast, Northern Ireland in July is 13°C.

Q: Does it rain in Northern Ireland in July?

There are usually 15 days with some rain in Belfast, Northern Ireland in July and the average monthly rainfall is 63mm.

Expect 18°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Northern Ireland in July. Check more long-term weather averages for Northern Ireland 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
15
15 days with some rainfall
11
11°C min night temperature
17
17 hours of daylight per day
0
No heat & humidity
63
63 mm of monthly rainfall
6
6 (High) UV index
13
13°C sea temperature

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The July weather guide for Northern Ireland (Belfast) 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.

Top Northern Ireland destinations

Below are average maximum temperatures at popular countries, regions and places in Northern Ireland in July. Select a holiday destination to see more weather parameters.

18
Belfast
17
Londonderry

All Northern Ireland destinations

Metric (°C / mm) | Imperial (°F / inches)

More about the UK

How hot is it in Northern Ireland in July?

Daytime temperatures usually reach 18°C in Belfast, Northern Ireland in July, falling to 11°C at night.

How sunny is it in Northern Ireland in July?

There are normally 5 hours of bright sunshine each day in Belfast, Northern Ireland in July - that's 30% of daylight hours.

How warm is the sea around Northern Ireland in July?

The average sea temperature around Belfast, Northern Ireland in July is 13°C.

Does it rain in Northern Ireland in July?

There are usually 15 days with some rain in Belfast, Northern Ireland in July and the average monthly rainfall is 63mm.

Northern Ireland July sunrise & sunset times

Browse the sunrise and sunset times for Northern Ireland in July 2025. Select a month to view Northern Ireland sunrise and sunset times for the next 12 months. The Northern Ireland sunrise and sunset times shown below are for Belfast.

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