Last updated: August 27, 2025
In December, the average temperature in Ballymena, United Kingdom hovers around 6°C (43°F), with a minimum dropping to -4°C (25°F) and a maximum peaking at 13°C (56°F). Expect a fair amount of rain, with 82 mm (3.2 in) of precipitation spread over 15 days, contributing to an average humidity of 86%. Prepare for a cool, damp month!
In December in Ballymena, the average temperature is 6°C (43°F). Maximums can reach 13°C (56°F), while minimums can drop as low as -4°C (25°F). Be prepared for chilly weather and pack accordingly if you're planning to travel during this time.
In Ballymena in December, the precipitation amount is 82 mm (3.2 in) over the course of 15 days.
In Ballymena in December humidity is 86%. With an average temperature of 6°C (43°F), this humidity feels like a chilling blanket enveloping you, making outdoor exploration feel damp and uncomfortable.
In Ballymena 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 Ballymena.
UV Risk Categories
Weather in Ballymena varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ballymena, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (42°F) | 56 mm (2.2 inches) | 87% | low |
| February Weather | 6°C (42°F) | 89 mm (3.5 inches) | 86% | low |
| March Weather | 6°C (44°F) | 78 mm (3.1 inches) | 86% | moderate |
| April Weather | 8°C (47°F) | 45 mm (1.8 inches) | 85% | moderate |
| May Weather | 11°C (52°F) | 66 mm (2.6 inches) | 82% | high |
| June Weather | 14°C (57°F) | 82 mm (3.2 inches) | 84% | very high |
| July Weather | 15°C (60°F) | 86 mm (3.4 inches) | 86% | very high |
| August Weather | 15°C (59°F) | 118 mm (4.7 inches) | 86% | high |
| September Weather | 13°C (56°F) | 70 mm (2.8 inches) | 88% | moderate |
| October Weather | 10°C (51°F) | 85 mm (3.3 inches) | 89% | moderate |
| November Weather | 8°C (46°F) | 85 mm (3.3 inches) | 90% | low |
| December Weather | 6°C (43°F) | 82 mm (3.2 inches) | 86% | low |