Last updated: June 18, 2025
In December, the average temperature in Barrie, Canada hovers around -3°C (27°F). Be prepared for a wide temperature range, as it can dip as low as -27°C (-16°F) and rise to a balmy 17°C (63°F). Expect 79 mm (3.1 in) of precipitation spread over 16 days, with a noteworthy average humidity of 91%. Stay warm and dry!
In December in Barrie, the average temperature is -3°C (27°F), with maximums reaching up to 17°C (63°F) and minimums plummeting as low as -27°C (-16°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack both warm and lighter clothing for varied weather conditions.
In Barrie in December, the precipitation amount is 79 mm (3.1 in) over a period of 16 days.
In Barrie in December humidity is 91%. With an average temperature of -3°C (27°F), this humidity feels like a thick, icy blanket wrapping around you, making travel quite uncomfortable as every breath is a mix of frigid air and moisture, and the cold dampness clings to your skin, turning even short outings into a test of endurance.
In Barrie 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 Barrie, you can visit Hourly UV Index in Barrie.
UV Risk Categories
Weather in Barrie varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Barrie, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (21°F) | 62 mm (2.5 inches) | 93% | low |
| February Weather | -5°C (23°F) | 68 mm (2.7 inches) | 94% | moderate |
| March Weather | -1°C (30°F) | 63 mm (2.5 inches) | 87% | moderate |
| April Weather | 5°C (41°F) | 107 mm (4.2 inches) | 82% | very high |
| May Weather | 12°C (55°F) | 90 mm (3.5 inches) | 74% | very high |
| June Weather | 18°C (65°F) | 100 mm (3.9 inches) | 68% | very high |
| July Weather | 21°C (70°F) | 98 mm (3.9 inches) | 67% | very high |
| August Weather | 20°C (69°F) | 115 mm (4.5 inches) | 67% | very high |
| September Weather | 16°C (61°F) | 85 mm (3.4 inches) | 74% | high |
| October Weather | 10°C (50°F) | 104 mm (4.1 inches) | 83% | moderate |
| November Weather | 2°C (36°F) | 87 mm (3.4 inches) | 89% | moderate |
| December Weather | -3°C (27°F) | 79 mm (3.1 inches) | 91% | low |