Last updated: August 27, 2025
In Maerdy, United Kingdom, the average temperature in December hovers around 6°C (43°F). Expect chilly days, with minimum temperatures dipping to -6°C (21°F) and occasional highs reaching 12°C (54°F). The month also sees 144 mm (5.7 in) of precipitation spread over 18 days, contributing to a notably high average humidity of 89%. Prepare for a wet and cool experience!
In December in Maerdy, the average temperature is 6°C (43°F). Maximums can reach 12°C (54°F), while minimums can drop to as low as -6°C (21°F). Be prepared for chilly conditions and pack accordingly if you plan to travel during this time.
In Maerdy in December, the precipitation amount is 144 mm (5.7 in) over the course of 18 days.
In Maerdy in December, humidity is 89%. With an average temperature of 6°C (43°F), this humidity feels like a chilly, damp embrace that can make outdoor activities uncomfortable and energy-draining, often leading travelers to seek shelter indoors or dress in layers to cope with the cold and moist air.
In Maerdy in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Maerdy.
UV Risk Categories
Weather in Maerdy varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Maerdy, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (40°F) | 82 mm (3.2 inches) | 88% | low |
| February Weather | 5°C (42°F) | 124 mm (4.9 inches) | 88% | low |
| March Weather | 6°C (43°F) | 111 mm (4.4 inches) | 86% | moderate |
| April Weather | 8°C (47°F) | 64 mm (2.5 inches) | 84% | high |
| May Weather | 11°C (52°F) | 93 mm (3.7 inches) | 80% | high |
| June Weather | 14°C (58°F) | 91 mm (3.6 inches) | 80% | very high |
| July Weather | 16°C (61°F) | 93 mm (3.7 inches) | 70% | very high |
| August Weather | 15°C (60°F) | 114 mm (4.5 inches) | 73% | high |
| September Weather | 13°C (56°F) | 92 mm (3.6 inches) | 79% | high |
| October Weather | 10°C (51°F) | 143 mm (5.6 inches) | 89% | moderate |
| November Weather | 7°C (45°F) | 117 mm (4.6 inches) | 90% | low |
| December Weather | 6°C (43°F) | 144 mm (5.7 inches) | 89% | low |