Valentia Island weather in August 2025

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

  • 18°C maximum daytime temperature in August in Valentia Island18
    18°C max day temperature
  • 5 hours of sunshine per day
  • 17 days with some rainfall in August in Valentia Island17
    17 days with some rainfall
  • 11°C minimum night-time temperature in August in Valentia Island11
    11°C min night temperature
  • 15 hours of daylight per day in August in Valentia Island15
    15 hours of daylight per day
  • No heat & humidity in August in Valentia Island0
    No heat & humidity
  • 114 mm monthly rainfall in August in Valentia Island114
    114 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Valentia Island5
    5 (Moderate) UV index
  • 15°C sea temperature in August in Valentia Island15
    15°C sea temperature

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The August weather guide for Ireland (Valentia Island) 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 Ireland

How hot is it in Valentia Island in August?

Daytime temperatures usually reach 18°C in Valentia Island in August, falling to 11°C at night.

How sunny is it in Valentia Island in August?

There are normally 5 hours of bright sunshine each day in Valentia Island in August - that's 31% of daylight hours.

How warm is the sea around Valentia Island in August?

The average sea temperature around Valentia Island in August is 15°C.

Does it rain in Valentia Island in August?

There are usually 17 days with some rain in Valentia Island in August and the average monthly rainfall is 114mm.

Valentia Island August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:04 20:31
Saturday, 16th August 2025 05:28 20:03
Sunday, 31st August 2025 05:52 19:30

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