Average annual temperature is 10.8 °C
Absolute maximum temperature: 25.8 °C
Absolute minimum temperature: -3.2 °C
Number of sunny days: 59 days
Number of rainy days: 306 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) | 12.2 | 13.2 | 13.7 | 17.3 | 22.4 | 25.8 | 21.5 | 22.4 | 25.7 | 19.6 | 12.9 | 12.5 |
| Average daytime temperature (°C) | 8.1 | 10.0 | 9.5 | 12.5 | 16.3 | 21.0 | 16.9 | 18.0 | 17.9 | 13.7 | 10.1 | 8.9 |
| Average temperature (°C) | 5.9 | 7.8 | 6.8 | 9.2 | 12.5 | 16.7 | 14.4 | 15.2 | 14.6 | 11.1 | 7.9 | 7.3 |
| Average night temperature (°C) | 3.7 | 5.2 | 4.1 | 5.9 | 8.7 | 12.7 | 11.9 | 12.6 | 11.5 | 8.9 | 5.7 | 5.5 |
| Absolute minimum temperature (°C) | -3.2 | -1.8 | -1.4 | 0.8 | 6.0 | 9.3 | 10.0 | 9.3 | 6.8 | 3.1 | -1.1 | -1.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 8.0 | 10.0 | 12.0 | 15.0 | 16.0 | 17.0 | 17.0 | 15.0 | 13.0 | 11.0 | 9.0 | 7.0 |
| Daylight mean duration (h) | 8.1 | 9.8 | 11.9 | 14.0 | 16.0 | 17.0 | 16.5 | 14.8 | 12.7 | 10.6 | 8.6 | 7.5 |
| Daylight minimum duration (h) | 7.0 | 8.0 | 10.0 | 13.0 | 15.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 7.0 | 7.0 |
| Sunshine mean duration (h) | 2.9 | 3.0 | 4.3 | 6.7 | 8.6 | 10.9 | 8.4 | 8.7 | 6.5 | 4.3 | 4.2 | 2.3 |
| Precipitation (mm) | 112 | 49 | 164 | 113 | 50 | 109 | 166 | 139 | 126 | 149 | 130 | 189 |
| Sunny days | 6 | 6 | 5 | 4 | 12 | 8 | 0 | 1 | 4 | 4 | 6 | 3 |
| Rainy days | 25 | 22 | 26 | 26 | 19 | 22 | 31 | 30 | 26 | 27 | 24 | 28 |
| 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