Average annual temperature is 10.4 °C
Absolute maximum temperature: 26.4 °C
Absolute minimum temperature: -3.9 °C
Number of sunny days: 89
Number of rainy days: 273
Number of snow days: 3
Average annual precipitation: 1677 mm
Look at detailed online map of Merthyr Tydfil
* Weather data for Merthyr Tydfil United Kingdom is based on climate observations for 2023 year
| Jan | Feb | Mar | Apr | Maggio | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 11 | 11.6 | 12.4 | 15.7 | 19.7 | 24.9 | 22.9 | 22.9 | 26.4 | 22.3 | 13 | 11.7 |
| Average daytime temperature (°C) | 6.9 | 8.2 | 8.4 | 11 | 16.4 | 20.6 | 17.4 | 18.2 | 19 | 14.2 | 9.3 | 8.5 |
| Average temperature (°C) | 4.6 | 5.6 | 6.1 | 7.7 | 12.3 | 16.4 | 14.7 | 15.1 | 16 | 11.8 | 7.1 | 6.8 |
| Average night temperature (°C) | 2.2 | 3 | 4.1 | 4.2 | 8.2 | 12 | 11.7 | 12.2 | 12.8 | 9.7 | 4.9 | 4.8 |
| Absolute minimum temperature (°C) | -3.6 | -2.1 | -1.1 | -1 | 5.1 | 6.8 | 8.1 | 9.1 | 6.9 | 3.9 | -2.4 | -3.9 |
| Jan | Feb | Mar | Apr | Maggio | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.1 | 10.8 | 12.9 | 14.8 | 16.3 | 16.7 | 16.6 | 15.5 | 13.6 | 11.6 | 9.7 | 8.2 |
| Daylight mean duration (h) | 8.4 | 10 | 11.9 | 13.9 | 15.7 | 16.6 | 16.2 | 14.6 | 12.7 | 10.7 | 8.9 | 7.9 |
| Daylight minimum duration (h) | 7.9 | 9.1 | 10.9 | 13 | 14.9 | 16.4 | 15.5 | 13.7 | 11.7 | 9.7 | 8.2 | 7.8 |
| Sunshine mean duration (h) | 4.2 | 4.5 | 5.6 | 7.2 | 11.7 | 11.7 | 9.6 | 9.5 | 7.5 | 5.6 | 4.2 | 2.9 |
| Precipitation (mm) | 226 | 18 | 218 | 111 | 48 | 66 | 179 | 121 | 142 | 167 | 129 | 251 |
| Sunny days | 12 | 11 | 3 | 8 | 14 | 13 | 1 | 2 | 7 | 6 | 9 | 3 |
| Rainy days | 18 | 17 | 27 | 22 | 17 | 17 | 30 | 29 | 23 | 25 | 21 | 27 |
| Snow days | 1 | 1 | 1 |
The best time to visit Merthyr Tydfil during the most sunny months:
Months with the longest average daylight duration in Merthyr Tydfil:
The largest precipitation sum in Merthyr Tydfil is at