Average annual temperature is 11.7 °C
Absolute maximum temperature: 26.3 °C
Absolute minimum temperature: -1.5 °C
Number of sunny days: 50 days
Number of rainy days: 315 days
Look at detailed online map of Derreen
* Weather data for Derreen Ireland is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 12.8 | 12.6 | 13.0 | 16.2 | 23.3 | 22.7 | 19.2 | 19.7 | 26.3 | 18.9 | 14.0 | 13.2 |
| Average daytime temperature (°C) | 9.5 | 10.3 | 10.1 | 12.2 | 15.9 | 19.4 | 16.7 | 17.2 | 17.9 | 14.3 | 11.3 | 10.5 |
| Average temperature (°C) | 7.7 | 8.8 | 8.0 | 9.7 | 12.8 | 16.4 | 14.9 | 15.4 | 15.5 | 12.4 | 9.8 | 9.1 |
| Average night temperature (°C) | 5.7 | 6.9 | 5.7 | 7.3 | 9.9 | 13.4 | 13.3 | 13.6 | 13.0 | 10.6 | 8.2 | 7.5 |
| Absolute minimum temperature (°C) | -0.1 | 0.5 | 0.2 | 3.1 | 6.5 | 9.8 | 10.3 | 9.1 | 8.3 | 5.3 | 1.0 | -1.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 10.0 | 12.0 | 14.0 | 16.0 | 16.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 |
| Daylight mean duration (h) | 8.4 | 9.9 | 11.9 | 13.9 | 15.7 | 16.6 | 16.2 | 14.6 | 12.7 | 10.7 | 8.8 | 7.9 |
| Daylight minimum duration (h) | 7.0 | 9.0 | 10.0 | 12.0 | 14.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 | 7.0 |
| Sunshine mean duration (h) | 3.0 | 3.8 | 5.3 | 7.7 | 10.4 | 10.4 | 9.1 | 8.3 | 7.3 | 4.6 | 4.7 | 2.7 |
| Precipitation (mm) | 232 | 86 | 361 | 123 | 91 | 118 | 290 | 184 | 197 | 232 | 214 | 289 |
| Sunny days | 3 | 5 | 4 | 3 | 12 | 8 | 0 | 1 | 4 | 5 | 3 | 2 |
| Rainy days | 28 | 23 | 27 | 27 | 19 | 22 | 31 | 30 | 26 | 26 | 27 | 29 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Derreen during the most sunny months:
Months with the longest average daylight duration in Derreen:
The largest precipitation sum in Derreen is at