Letterkenny weather in August 2025

Expect daytime maximum temperatures of 17°C in Letterkenny in August based on long-term weather averages. There are 4 hours of sunshine per day on average with 21 days with some rainfall and typically 98 mm of rainfall in the month.

  • 17°C maximum daytime temperature in August in Letterkenny17
    17°C max day temperature
  • 4 hours of sunshine per day
  • 21 days with some rainfall in August in Letterkenny21
    21 days with some rainfall
  • 10°C minimum night-time temperature in August in Letterkenny10
    10°C min night temperature
  • 15 hours of daylight per day in August in Letterkenny15
    15 hours of daylight per day
  • No heat & humidity in August in Letterkenny0
    No heat & humidity
  • 98 mm monthly rainfall in August in Letterkenny98
    98 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Letterkenny5
    5 (Moderate) UV index

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

Daytime temperatures usually reach 17°C in Letterkenny in August, falling to 10°C at night.

How sunny is it in Letterkenny in August?

There are normally 4 hours of bright sunshine each day in Letterkenny in August - that's 28% of daylight hours.

Does it rain in Letterkenny in August?

There are usually 21 days with some rain in Letterkenny in August and the average monthly rainfall is 98mm.

Letterkenny August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:40 20:33
Saturday, 16th August 2025 05:08 20:01
Sunday, 31st August 2025 05:36 19:25

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