Average annual temperature is 20.6 °C
Absolute maximum temperature: 39.5 °C
Absolute minimum temperature: -0.6 °C
Number of sunny days: 167 days
Number of rainy days: 198 days
Look at detailed online map of Killarney
* Weather data for Killarney United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 25.4 | 28.5 | 30.0 | 31.2 | 33.8 | 36.7 | 37.5 | 39.5 | 35.4 | 31.0 | 26.9 | 24.7 |
| Average daytime temperature (°C) | 19.2 | 22.4 | 24.2 | 26.9 | 29.0 | 31.6 | 33.8 | 36.3 | 31.4 | 26.0 | 20.1 | 16.6 |
| Average temperature (°C) | 13.3 | 16.2 | 17.8 | 20.5 | 22.9 | 25.9 | 28.2 | 29.9 | 25.5 | 20.2 | 14.8 | 11.8 |
| Average night temperature (°C) | 8.7 | 11.9 | 12.7 | 15.1 | 17.6 | 21.2 | 23.7 | 24.9 | 20.8 | 15.1 | 10.4 | 7.7 |
| Absolute minimum temperature (°C) | -0.6 | 1.0 | 0.3 | 9.7 | 10.2 | 18.9 | 21.0 | 22.8 | 16.4 | 8.9 | 0.9 | -0.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.4 | 11.1 | 12.0 | 12.9 | 13.7 | 14.1 | 13.9 | 13.3 | 12.4 | 11.4 | 10.6 | 10.2 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 7.0 | 7.6 | 8.9 | 9.6 | 10.5 | 10.4 | 11.3 | 11.0 | 9.7 | 9.1 | 6.9 | 6.5 |
| Precipitation (mm) | 159 | 69 | 153 | 93 | 84 | 142 | 82 | 92 | 128 | 46 | 95 | 156 |
| Sunny days | 15 | 12 | 15 | 14 | 11 | 8 | 6 | 9 | 14 | 25 | 18 | 20 |
| Rainy days | 16 | 16 | 16 | 16 | 20 | 22 | 25 | 22 | 16 | 6 | 12 | 11 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Killarney during the most sunny months:
The largest precipitation sum in Killarney is at