SeasonMapClifden (Connemara) weather in August
Ireland
August in Clifden: cool, rainy, with clean air — fine if you can take 20 rainy days.
#5 of 12 months in Clifden · #698 of 1383 destinations to visit in August · comfort 79/100 (tier B)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Clifden in August
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Clifden climate normals — August
| Daytime high | 17°C / 63°F | 🙂 cool |
|---|---|---|
| Nighttime low | 13°C / 56°F | |
| Feels like (high) | 15°C / 59°F | |
| Sea temperature | 17°C / 62°F | 🧊 bracing |
| Rainfall | 126 mm / 5 in | 🌧 rainy |
| Rainy days | 20 days | |
| Humidity | 83% | 💦 very humid |
| Dew point | 13°C / 55°F | |
| Sunshine | 9.4 h/day | |
| Daylight | 14.7 h | |
| Wind | 27 km/h / 17 mph | |
| Air quality (US AQI) | 45 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Clifden in August
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsConnemara Pony Show, Summer holidays in Ireland, school holidays in 7 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Clifden's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherClifden's weather peaks May–July.
Best weatherFair weatherToughest weather
What's on in Clifden in August
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Connemara walking season
15 Apr – 10 Oct · usuallyTrail seasonDiamond Hill in the national park, the Sky Road and the Twelve Bens are at their most reliable from mid-spring to early autumn. Outside that the bog paths hold water and the light runs out mid-afternoon. Source ↗
- Season
Midge season
25 May – 15 Sep · usuallyInsect seasonStill evenings near bog and water are the problem, not the days. Anything with an Atlantic breeze on it stays clear, which is most of the coast road and none of the inland lakes. Source ↗
- Festival
Connemara Pony Show
15–24 Aug · usuallyMajor festivalCrowdedBook earlyThe world's main gathering of Connemara ponies takes over the showgrounds and the town for the best part of a week each August. Every bed in Clifden is gone months ahead of it. Source ↗
Nearby, and something's on
Within 300 km of Clifden — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Clifden?
Clifden in August — FAQ
- Is August a good time to visit Clifden?
- August in Clifden: cool, rainy, with clean air — fine if you can take 20 rainy days. It ranks #5 of 12 months for Clifden on SeasonMap's comfort score (79/100).
- What is the weather like in Clifden in August?
- In August, Clifden averages a daily high of 17.3°C and a low of 13.4°C, with about 125.9 mm of rain over roughly 20.3 rainy days.
- What is the air quality in Clifden in August?
- Clifden has a mean US Air Quality Index of about 45 in August.
Other months in Clifden
Compare Clifden in August
Warmer or cooler than Clifden in August
Similar destinations in Northern Europe — August
Within 300 km: Dingle's Blasket Islands boats around 1 Apr – 30 Sep, and Belfast's Belfast Mela on 22–30 Aug.