Average annual temperature is 10.7 °C
Absolute maximum temperature: 27.6 °C
Absolute minimum temperature: -4.6 °C
Number of sunny days: 107 days
Number of rainy days: 258 days
Look at detailed online map of Y Gelli Gandryll
* Weather data for Y Gelli Gandryll United Kingdom is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 12.3 | 14.2 | 13.6 | 17.3 | 19.4 | 25.8 | 24.4 | 24.3 | 27.6 | 22.5 | 14.5 | 12.7 |
| Average daytime temperature (°C) | 7.6 | 9.1 | 9.2 | 11.7 | 16.7 | 21.4 | 18.8 | 19.3 | 20.0 | 15.2 | 9.6 | 9.0 |
| Average temperature (°C) | 4.9 | 6.1 | 6.6 | 8.0 | 12.3 | 16.7 | 15.5 | 15.7 | 16.2 | 11.9 | 7.1 | 7.0 |
| Average night temperature (°C) | 2.4 | 3.3 | 4.2 | 4.0 | 7.7 | 11.8 | 11.8 | 11.8 | 12.0 | 9.0 | 4.3 | 4.7 |
| Absolute minimum temperature (°C) | -3.9 | -2.8 | -3.1 | -1.7 | 5.1 | 5.9 | 8.3 | 8.8 | 6.2 | 2.5 | -3.2 | -4.6 |
| 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 | 16.7 | 16.2 | 14.6 | 12.7 | 10.6 | 8.8 | 7.8 |
| 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) | 3.7 | 4.5 | 4.2 | 6.6 | 11.0 | 11.5 | 9.6 | 8.8 | 6.9 | 5.3 | 3.9 | 1.9 |
| Precipitation (mm) | 86 | 19 | 125 | 84 | 54 | 60 | 106 | 92 | 78 | 154 | 77 | 136 |
| Sunny days | 14 | 15 | 2 | 5 | 11 | 14 | 4 | 8 | 10 | 8 | 11 | 5 |
| Rainy days | 17 | 13 | 29 | 25 | 20 | 16 | 27 | 23 | 20 | 23 | 19 | 26 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Y Gelli Gandryll during the most sunny months:
Months with the longest average daylight duration in Y Gelli Gandryll:
The largest precipitation sum in Y Gelli Gandryll is at