Last updated: June 18, 2025
In September, the average temperature in Vermilion, Canada hovers around 10°C (51°F), with a wide temperature range from a chilly -3°C (26°F) to a warm 30°C (87°F). Expect about 35 mm (1.4 in) of precipitation over the course of 8 days, contributing to an average humidity of 73%. Stay prepared for both the cool and warm spells!
In September in Vermilion, the average temperature is 10°C (51°F), with maximums reaching 30°C (87°F) and minimums dipping as low as -3°C (26°F). Be sure to pack layers to prepare for a wide range of temperatures during your travels.
In Vermilion in September, the precipitation amount is 35 mm (1.4 in) over the course of 8 days.
In Vermilion in September, humidity is 73%. With an average temperature of 10°C (51°F), this humidity feels like a chilly dampness that can make outdoor activities uncomfortable, causing your clothes to cling to your skin and a persistent coolness that seeps into your bones, which might deter long excursions without proper layering.
In Vermilion in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Vermilion, you can refer to this Hourly UV Index in Vermilion.
UV Risk Categories
Weather in Vermilion varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Vermilion, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -13°C (9°F) | 16 mm (0.6 inches) | 89% | low |
February Weather | -15°C (5°F) | 16 mm (0.6 inches) | 92% | moderate |
March Weather | -6°C (21°F) | 23 mm (0.9 inches) | 88% | moderate |
April Weather | 1°C (34°F) | 26 mm (1.0 inches) | 80% | high |
May Weather | 11°C (52°F) | 56 mm (2.2 inches) | 73% | high |
June Weather | 15°C (60°F) | 108 mm (4.3 inches) | 71% | very high |
July Weather | 17°C (63°F) | 89 mm (3.5 inches) | 80% | very high |
August Weather | 16°C (61°F) | 59 mm (2.3 inches) | 78% | high |
September Weather | 10°C (51°F) | 35 mm (1.4 inches) | 73% | high |
October Weather | 2°C (37°F) | 28 mm (1.1 inches) | 78% | moderate |
November Weather | -6°C (22°F) | 29 mm (1.1 inches) | 82% | low |
December Weather | -11°C (13°F) | 16 mm (0.6 inches) | 92% | low |