Last updated: June 18, 2025
In December, the average temperature in Watford, Canada hovers around 1°C (33°F). Expect chilly conditions with minimums plunging to -16°C (4°F) and reaching a maximum of 14°C (58°F). Precipitation levels bring about 74 mm (2.9 in) of moisture over 14 days, while the air remains quite humid with an average humidity of 87%.
In December in Watford, the average temperature is 1°C (33°F). The maximum can reach 14°C (58°F), while the minimum can drop as low as -16°C (4°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.
In Watford in December, the precipitation amount is 74 mm (2.9 in) over a span of 14 days.
In Watford in December, humidity is 87%. With an average temperature of 1°C (33°F), this humidity feels like a chilling blanket, making traveling uncomfortable as the cold air clings to your skin, amplifying the frosty bite and dampness that can quickly lead to a sense of unease.
In Watford in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Watford, you can visit Hourly UV Index in Watford.
UV Risk Categories
Weather in Watford varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Watford, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 81 mm (3.2 inches) | 90% | low |
| February Weather | -2°C (28°F) | 82 mm (3.2 inches) | 90% | moderate |
| March Weather | 1°C (35°F) | 80 mm (3.1 inches) | 87% | moderate |
| April Weather | 6°C (43°F) | 109 mm (4.3 inches) | 87% | very high |
| May Weather | 12°C (54°F) | 104 mm (4.1 inches) | 82% | very high |
| June Weather | 18°C (65°F) | 87 mm (3.4 inches) | 81% | very high |
| July Weather | 22°C (72°F) | 84 mm (3.3 inches) | 79% | very high |
| August Weather | 22°C (71°F) | 99 mm (3.9 inches) | 80% | very high |
| September Weather | 18°C (65°F) | 87 mm (3.4 inches) | 81% | high |
| October Weather | 12°C (54°F) | 138 mm (5.4 inches) | 84% | moderate |
| November Weather | 4°C (40°F) | 99 mm (3.9 inches) | 88% | moderate |
| December Weather | 1°C (33°F) | 74 mm (2.9 inches) | 87% | low |