Rosslare weather in August 2025

Expect 18°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Rosslare in August. Check more long-term weather averages for Rosslare in August before you book your next holiday to Ireland in 2025/2026.

  • 18°C maximum daytime temperature in August in Rosslare18
    18°C max day temperature
  • 6 hours of sunshine per day
  • 17 days with some rainfall in August in Rosslare17
    17 days with some rainfall
  • 12°C minimum night-time temperature in August in Rosslare12
    12°C min night temperature
  • 15 hours of daylight per day in August in Rosslare15
    15 hours of daylight per day
  • No heat & humidity in August in Rosslare0
    No heat & humidity
  • 72 mm monthly rainfall in August in Rosslare72
    72 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Rosslare5
    5 (Moderate) UV index
  • 15°C sea temperature in August in Rosslare15
    15°C sea temperature

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The August weather guide for Ireland (Rosslare) 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 Rosslare in August?

Daytime temperatures usually reach 18°C in Rosslare in August, falling to 12°C at night.

How sunny is it in Rosslare in August?

There are normally 6 hours of bright sunshine each day in Rosslare in August - that's 39% of daylight hours.

How warm is the sea around Rosslare in August?

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

Does it rain in Rosslare in August?

There are usually 17 days with some rain in Rosslare in August and the average monthly rainfall is 72mm.

Rosslare August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:47 20:16
Saturday, 16th August 2025 05:11 19:48
Sunday, 31st August 2025 05:35 19:15

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