Last updated: June 18, 2025
In December, the average temperature in Port-Cartier, Canada hovers around -7°C (19°F), with a minimum that can dip to -22°C (-8°F) and a maximum reaching up to 6°C (43°F). Expect about 109 mm (4.3 in) of precipitation spread across 14 days, coupled with a high average humidity of 92%.
In December in Port-Cartier, the average temperature is -7°C (19°F), with maximums reaching 6°C (43°F) and minimums dropping as low as -22°C (-8°F). Travelers should be prepared for cold weather and dress in layers to stay warm during their visit.
In Port-Cartier in December, the precipitation amount is 109 mm (4.3 in) over the course of 14 days.
In Port-Cartier in December humidity is 92%. With average temperature -7°C (19°F), this humidity feels like an icy blanket wrapping around you, making each step outside a struggle as the cold lingers in the air and moisture clings to your skin, turning even the briefest outings into a frigid challenge.
In Port-Cartier 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 Port-Cartier.
UV Risk Categories
Weather in Port-Cartier varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Port-Cartier, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -12°C (12°F) | 72 mm (2.8 inches) | 93% | low |
| February Weather | -11°C (13°F) | 63 mm (2.5 inches) | 92% | moderate |
| March Weather | -6°C (22°F) | 78 mm (3.1 inches) | 91% | moderate |
| April Weather | 1°C (33°F) | 107 mm (4.2 inches) | 89% | high |
| May Weather | 7°C (44°F) | 83 mm (3.3 inches) | 80% | very high |
| June Weather | 13°C (56°F) | 75 mm (2.9 inches) | 69% | very high |
| July Weather | 17°C (63°F) | 69 mm (2.7 inches) | 77% | high |
| August Weather | 17°C (63°F) | 105 mm (4.1 inches) | 81% | high |
| September Weather | 12°C (53°F) | 145 mm (5.7 inches) | 82% | high |
| October Weather | 6°C (43°F) | 122 mm (4.8 inches) | 87% | moderate |
| November Weather | -1°C (31°F) | 117 mm (4.6 inches) | 87% | low |
| December Weather | -7°C (19°F) | 109 mm (4.3 inches) | 92% | low |