Last updated: June 18, 2025
In December, the average temperature in Nepean, Canada hovers around -5°C (24°F), creating a brisk atmosphere. However, temperatures can range significantly, with a minimum of -29°C (-21°F) and a maximum of 15°C (60°F). Expect 77 mm (3.0 in) of precipitation over 12 days, accompanied by a high average humidity of 89%. Prepare accordingly!
In December in Nepean, the average temperature is -5°C (24°F). The maximum can reach 15°C (60°F) and the minimum can be as low as -29°C (-21°F). Be prepared for a wide range of temperatures, making it essential to pack for both warm and chilly conditions during your travels.
In Nepean in December, the precipitation amount is 77 mm (3.0 in) spread over 12 days.
In Nepean in December humidity is 89%. With an average temperature of -5°C (24°F), this humidity feels like an uncomfortable chill enveloping you, making outdoor activities less enjoyable and requiring extra layers to stay warm while battling the dampness in the air.
In Nepean 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 Nepean, you can visit Hourly UV Index in Nepean.
UV Risk Categories
Weather in Nepean varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Nepean, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (18°F) | 74 mm (2.9 inches) | 93% | low |
| February Weather | -7°C (20°F) | 78 mm (3.1 inches) | 93% | moderate |
| March Weather | -2°C (29°F) | 84 mm (3.3 inches) | 86% | moderate |
| April Weather | 6°C (43°F) | 115 mm (4.5 inches) | 82% | very high |
| May Weather | 13°C (57°F) | 111 mm (4.4 inches) | 75% | very high |
| June Weather | 19°C (66°F) | 92 mm (3.6 inches) | 68% | very high |
| July Weather | 22°C (72°F) | 112 mm (4.4 inches) | 69% | very high |
| August Weather | 20°C (69°F) | 89 mm (3.5 inches) | 67% | very high |
| September Weather | 16°C (61°F) | 66 mm (2.6 inches) | 72% | high |
| October Weather | 10°C (49°F) | 131 mm (5.1 inches) | 83% | moderate |
| November Weather | 1°C (34°F) | 94 mm (3.7 inches) | 88% | moderate |
| December Weather | -5°C (24°F) | 77 mm (3.0 inches) | 89% | low |