SeasonMapKillarney weather in August
Ireland
August in Killarney: nice, rainy, with clean air — an excellent time to visit.
#4 of 12 months in Killarney · #415 of 1383 destinations to visit in August · comfort 86/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Killarney in August
Other months in Killarney
Killarney's forum is candid that July weather is genuinely a grab bag — cold, rainy, calm, warm and windy have all been reported in the same month, with wetter conditions than spring and true heatwaves rare. Regulars' consistent advice is layers plus a proper rain jacket, noting July is also the single busiest month locally so accommodation books up fast regardless of forecast.
Add your own note from Killarney's card on the map.
Killarney climate normals — August
| Daytime high | 19°C / 66°F | 😎 nice |
|---|---|---|
| Nighttime low | 13°C / 56°F | |
| Feels like (high) | 18°C / 64°F | |
| Sea temperature | 18°C / 64°F | 🧊 bracing |
| Rainfall | 99 mm / 3.9 in | 🌧 rainy |
| Rainy days | 15 days | |
| Humidity | 83% | 💦 very humid |
| Dew point | 13°C / 55°F | |
| Sunshine | 9.4 h/day | |
| Daylight | 14.6 h | |
| Wind | 19 km/h / 12 mph | |
| Air quality (US AQI) | 32 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Killarney 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 crowdsPeak season on the Ring of Kerry, Summer holidays in Ireland, school holidays in 7 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Killarney'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 weatherKillarney's weather peaks May–July.
Best weatherFair weatherToughest weather
What's on in Killarney in August
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Holiday
Peak season on the Ring of Kerry
1 Jul – 31 AugSchool holidaysCrowdedBook earlyCoaches run the Ring of Kerry anticlockwise, so the day trip has to be timed around them, and Muckross and the Gap of Dunloe take the overflow. Book anything with a jaunting car ahead. Source ↗
Nearby, and something's on
Within 300 km of Killarney — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Killarney?
Killarney in August — FAQ
- Is August a good time to visit Killarney?
- August in Killarney: nice, rainy, with clean air — an excellent time to visit. It ranks #4 of 12 months for Killarney on SeasonMap's comfort score (86/100).
- What is the weather like in Killarney in August?
- In August, Killarney averages a daily high of 18.7°C and a low of 13.1°C, with about 99.4 mm of rain over roughly 15.2 rainy days.
- What is the air quality in Killarney in August?
- Killarney has a mean US Air Quality Index of about 32 in August.
Other months in Killarney
Compare Killarney in August
Warmer or cooler than Killarney in August
Similar destinations in Northern Europe — August
Within 300 km: Dingle's Blasket Islands boats around 1 Apr – 30 Sep, and Dublin's All-Ireland finals at Croke Park around 10 Jul – 5 Aug.