Portlaoise weather in August 2025

Expect 66°F daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Portlaoise in August. Check more long-term weather averages for Portlaoise in August before you book your next holiday to Ireland in 2025/2026.

  • 66°F maximum daytime temperature in August in Portlaoise66
    66°F max day temperature
  • 4 hours of sunshine per day
  • 18 days with some rainfall in August in Portlaoise18
    18 days with some rainfall
  • 50°F minimum night-time temperature in August in Portlaoise50
    50°F min night temperature
  • 15 hours of daylight per day in August in Portlaoise15
    15 hours of daylight per day
  • No heat & humidity in August in Portlaoise0
    No heat & humidity
  • 3.1 inches monthly rainfall in August in Portlaoise3.1
    3.1 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Portlaoise5
    5 (Moderate) UV index

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The August weather guide for Ireland (Portlaoise) 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)  |  Imperial (°F)

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How hot is it in Portlaoise in August?

Daytime temperatures usually reach 66°F in Portlaoise in August, falling to 50°F at night.

How sunny is it in Portlaoise in August?

There are normally 4 hours of bright sunshine each day in Portlaoise in August - that's 29% of daylight hours.

Does it rain in Portlaoise in August?

There are usually 18 days with some rain in Portlaoise in August and the average monthly rainfall is 3.1 inches.

Portlaoise August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:47 20:23
Saturday, 16th August 2025 05:12 19:54
Sunday, 31st August 2025 05:38 19:20

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