Last updated: June 18, 2025
In December, the average temperature in Mount Pearl, Canada hovers around 0°C (33°F). Expect a chilly range with minimums dipping to -10°C (15°F) and highs reaching up to 15°C (59°F). Brace for 133 mm (5.3 in) of precipitation spread over 16 days, contributing to an average humidity level of 83%.
In December in Mount Pearl, the average temperature is 0°C (33°F). Maximums can reach 15°C (59°F) and minimums can be as low as -10°C (15°F). Be prepared for a range of temperatures during your travels, from chilly days to cooler nights.
In Mount Pearl in December, the precipitation amount is 133 mm (5.3 in) over the course of 16 days.
In Mount Pearl in December, humidity is 83%. With an average temperature of 0°C (33°F), this humidity feels like a cold, damp chill that cuts through layers of clothing, making travel uncomfortable and brisk as each breath fills the lungs with icy moisture.
In Mount Pearl 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 Mount Pearl.
UV Risk Categories
Weather in Mount Pearl varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Mount Pearl, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (29°F) | 113 mm (4.5 inches) | 83% | low |
| February Weather | -3°C (26°F) | 102 mm (4.0 inches) | 84% | moderate |
| March Weather | -2°C (29°F) | 100 mm (3.9 inches) | 85% | moderate |
| April Weather | 2°C (36°F) | 103 mm (4.0 inches) | 88% | high |
| May Weather | 5°C (41°F) | 80 mm (3.1 inches) | 90% | very high |
| June Weather | 10°C (51°F) | 86 mm (3.4 inches) | 91% | very high |
| July Weather | 15°C (58°F) | 100 mm (3.9 inches) | 94% | very high |
| August Weather | 17°C (62°F) | 69 mm (2.7 inches) | 93% | very high |
| September Weather | 13°C (56°F) | 107 mm (4.2 inches) | 90% | high |
| October Weather | 8°C (48°F) | 97 mm (3.8 inches) | 87% | moderate |
| November Weather | 4°C (40°F) | 108 mm (4.3 inches) | 84% | low |
| December Weather | 0°C (33°F) | 133 mm (5.3 inches) | 83% | low |