Climate almanac
Merthyr Tydfil
Wales, United Kingdom · 51.75°, -3.38°
What is the weather like in Merthyr Tydfil in December?
In December, Merthyr Tydfil is typically 46°F (8°C) during the day and 39°F (4°C) at night. The month brings about 5.6 in (143 mm) of precipitation in total. Snowfall averages about 1.3 in (34 mm) over the month.
- Average high46°F (8°C)
- Average low39°F (4°C)
- Precipitation5.6 in (143 mm)
- Clear or mostly clear days1
- Snowfall1.3 in (34 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)