inland destination · warmest in Jul · mid-range
Open Merthyr Tydfil on the live value map →| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 3 | 3 | 5 | 7 | 10 | 13 | 15 | 15 | 12 | 9 | 6 | 4 |
| Rain (days) | 162 | 115 | 122 | 88 | 84 | 87 | 80 | 107 | 122 | 142 | 160 | 164 |
Warmest month: Jul. Driest: Jul.
No mild-temperature months (18–28°C) — expect extremes.