Larne weather in July 2025

Expect 17°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Larne in July. Check more long-term weather averages for Larne in July before you book your next holiday to Northern Ireland in 2025/2026.

  • 17°C maximum daytime temperature in July in Larne17
    17°C max day temperature
  • 5 hours of sunshine per day
  • 15 days with some rainfall in July in Larne15
    15 days with some rainfall
  • 10°C minimum night-time temperature in July in Larne10
    10°C min night temperature
  • 17 hours of daylight per day in July in Larne17
    17 hours of daylight per day
  • No heat & humidity in July in Larne0
    No heat & humidity
  • 74 mm monthly rainfall in July in Larne74
    74 mm of monthly rainfall
  • UV (maximum) index 6 (High) in July in Larne6
    6 (High) UV index
  • 12°C sea temperature in July in Larne12
    12°C sea temperature

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The July weather guide for Northern Ireland (Larne) 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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How warm is it in Larne in July?

Daytime temperatures usually reach 17°C in Larne in July, falling to 10°C at night.

How sunny is it in Larne in July?

There are normally 5 hours of bright sunshine each day in Larne in July - that's 29% of daylight hours.

How warm is the sea around Larne in July?

The average sea temperature around Larne in July is 12°C.

Does it rain in Larne in July?

There are usually 15 days with some rain in Larne in July and the average monthly rainfall is 74mm.

Larne July sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st July 2025 03:50 21:04
Wednesday, 16th July 2025 04:07 20:51
Thursday, 31st July 2025 04:31 20:27

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