Merthyr Tydfil Weather in December
What's the weather like in Merthyr Tydfil (Wales) in December 2024?
The climate in Merthyr Tydfil during December can be summarized as cool and very wet.
December is in the winter in Merthyr Tydfil and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cold 7°C (44°F), whilst at night 2°C (35°F) is normal.
| Daytime temperature | 6.6°C 43.8°F |
|---|---|
| Nightly temperature | 1.7°C 35°F |
| Average temperature | 4.1°C 39.4°F |
| Daily sunshine | 1.6 hrs |
| Avg rainfall | 212 mm 8.4 ins |
| Rainy days | 21 days |
| Sea temperature | 11.6°C 52.9°F |
| Humidity | 93% |
| Windspeed | 20.9kph 13 mph |
On average December is the wettest month of the year in Merthyr Tydfil with around 212mm 8.4 inches of rain making it a very wet time to visit. This rainfall is typically spread over 21 days, although this may vary considerably.
On the flip side this corresponds to an average of 1.6 hours of sunshine per day.
December temperatures in Merthyr Tydfil
December rainfall
December hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Merthyr Tydfil in December 2024.
Other monthly averages
Best places to visit in December
Merthyr Tydfil weather stats
| Hottest month: | July | 18.3°C 64.9°F |
|---|---|---|
| Driest month: | July | 93mm 3.7ins |
| Sunniest month: | June | 6.6hrs |
| Coldest month: | February | 5.2°C 41.4°F |
| Wettest month: | December | 212mm 8.3ins |
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