Average annual temperature is 10.7 °C
Absolute maximum temperature: 26.0 °C
Absolute minimum temperature: -3.1 °C
Number of sunny days: 65 days
Number of rainy days: 300 days
Look at detailed online map of Grallagh
* Weather data for Grallagh 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 | 13.5 | 13.8 | 17.6 | 22.8 | 26.0 | 21.8 | 22.6 | 25.7 | 19.7 | 12.8 | 12.4 |
| Average daytime temperature (°C) | 8.0 | 9.9 | 9.5 | 12.5 | 16.3 | 20.9 | 16.9 | 17.9 | 17.9 | 13.7 | 10.0 | 8.9 |
| Average temperature (°C) | 5.9 | 7.7 | 6.7 | 9.2 | 12.5 | 16.7 | 14.4 | 15.1 | 14.6 | 11.2 | 7.8 | 7.2 |
| Average night temperature (°C) | 3.8 | 5.1 | 4.1 | 6.0 | 8.7 | 12.7 | 11.8 | 12.5 | 11.6 | 8.9 | 5.5 | 5.4 |
| Absolute minimum temperature (°C) | -3.1 | -1.6 | -1.4 | 1.0 | 5.7 | 9.1 | 9.7 | 9.2 | 7.0 | 2.4 | -0.3 | -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) | 3.0 | 3.0 | 4.4 | 6.8 | 8.8 | 11.1 | 8.4 | 8.5 | 6.5 | 4.5 | 4.2 | 2.2 |
| Precipitation (mm) | 111 | 51 | 147 | 96 | 46 | 111 | 162 | 139 | 120 | 144 | 131 | 172 |
| Sunny days | 6 | 8 | 4 | 4 | 12 | 9 | 1 | 3 | 4 | 6 | 5 | 3 |
| Rainy days | 25 | 20 | 27 | 26 | 19 | 21 | 30 | 28 | 26 | 25 | 25 | 28 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Grallagh during the most sunny months:
Months with the longest average daylight duration in Grallagh:
The largest precipitation sum in Grallagh is at