Belfast weather in July 2025

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

  • 18°C maximum daytime temperature in July in Belfast18
    18°C max day temperature
  • 5 hours of sunshine per day
  • 15 days with some rainfall in July in Belfast15
    15 days with some rainfall
  • 11°C minimum night-time temperature in July in Belfast11
    11°C min night temperature
  • 17 hours of daylight per day in July in Belfast17
    17 hours of daylight per day
  • No heat & humidity in July in Belfast0
    No heat & humidity
  • 63 mm monthly rainfall in July in Belfast63
    63 mm of monthly rainfall
  • UV (maximum) index 6 (High) in July in Belfast6
    6 (High) UV index
  • 13°C sea temperature in July in Belfast13
    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.

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

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More about the UK

How hot is it in Belfast in July?

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

How sunny is it in Belfast in July?

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

How warm is the sea around Belfast in July?

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

Does it rain in Belfast in July?

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

Belfast July sunrise & sunset times

Browse the sunrise and sunset times for Belfast in July 2025. Select a month to view Belfast sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st July 2025 03:52 21:02
Wednesday, 16th July 2025 04:09 20:50
Thursday, 31st July 2025 04:33 20:26

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