Antrim weather in August 2025

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

  • 18°C maximum daytime temperature in August in Antrim18
    18°C max day temperature
  • 5 hours of sunshine per day
  • 19 days with some rainfall in August in Antrim19
    19 days with some rainfall
  • 10°C minimum night-time temperature in August in Antrim10
    10°C min night temperature
  • 15 hours of daylight per day in August in Antrim15
    15 hours of daylight per day
  • No heat & humidity in August in Antrim0
    No heat & humidity
  • 85 mm monthly rainfall in August in Antrim85
    85 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Antrim5
    5 (Moderate) UV index

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The August weather guide for Northern Ireland (Antrim) 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 Antrim in August?

Daytime temperatures usually reach 18°C in Antrim in August, falling to 10°C at night.

How sunny is it in Antrim in August?

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

Does it rain in Antrim in August?

There are usually 19 days with some rain in Antrim in August and the average monthly rainfall is 85mm.

Antrim August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:35 20:26
Saturday, 16th August 2025 05:02 19:54
Sunday, 31st August 2025 05:30 19:19

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