Last updated: August 27, 2025
In December, the average temperature in Carstairs, United Kingdom hovers around 4°C (40°F), with extremes ranging from a chilly -7°C (20°F) to a mild 12°C (54°F). Expect 102 mm (4.0 in) of precipitation over 17 days, contributing to an average humidity level of 89%. This combination makes for a cool and damp atmosphere, perfect for cozy indoor activities!
In December in Carstairs, the average temperature is 4°C (40°F). Maximum temperatures can reach 12°C (54°F), while the minimum can drop as low as -7°C (20°F). Be sure to pack warm clothing if you're planning to visit during this chilly month!
In Carstairs in December, the precipitation amount is 102 mm (4.0 in) spread over 17 days.
In Carstairs in December humidity is 89%. With an average temperature of 4°C (40°F), this humidity feels like a chilling blanket enveloping you, making travel uncomfortable and damp, as the cold penetrates through your clothes and the air feels heavy and clinging.
In Carstairs 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 Carstairs.
UV Risk Categories
Weather in Carstairs varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Carstairs, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (39°F) | 76 mm (3.0 inches) | 90% | low |
| February Weather | 4°C (40°F) | 119 mm (4.7 inches) | 88% | low |
| March Weather | 5°C (42°F) | 102 mm (4.0 inches) | 86% | moderate |
| April Weather | 7°C (45°F) | 43 mm (1.7 inches) | 85% | moderate |
| May Weather | 10°C (51°F) | 71 mm (2.8 inches) | 80% | high |
| June Weather | 13°C (56°F) | 106 mm (4.2 inches) | 83% | very high |
| July Weather | 15°C (59°F) | 92 mm (3.6 inches) | 82% | very high |
| August Weather | 14°C (58°F) | 125 mm (4.9 inches) | 82% | high |
| September Weather | 12°C (54°F) | 87 mm (3.4 inches) | 88% | moderate |
| October Weather | 9°C (49°F) | 118 mm (4.6 inches) | 90% | moderate |
| November Weather | 6°C (43°F) | 86 mm (3.4 inches) | 92% | low |
| December Weather | 4°C (40°F) | 102 mm (4.0 inches) | 89% | low |