September Weather in Courtenay, Canada

Last updated: June 18, 2025

In September, the average temperature in Courtenay, Canada is a comfortable 15°C (60°F). Expect minimums dipping to 9°C (48°F) and maximums reaching up to 28°C (84°F). With an average humidity of 81%, be prepared for a pretty humid atmosphere! Additionally, anticipate about 182 mm (7.2 in) of precipitation over 14 days, making it a good idea to have an umbrella handy.

September Temperature in Courtenay

In September in Courtenay, the average temperature is 15°C (60°F). Maximums can reach 28°C (84°F) and minimums can drop to as low as 9°C (48°F). This pleasant temperature range makes Courtenay an ideal destination for outdoor activities and exploring the local sights.

September Weather in Courtenay: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Courtenay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Courtenay, September typically has an average temperature of 15°C (60°F), with highs reaching up to 28°C (84°F) and lows dropping to around 9°C (48°F).

Data source: Temperature data for Courtenay generated using information from the Copernicus Climate Change Service.

September Precipitation in Courtenay

In Courtenay in September, the precipitation amount is 182 mm (7.2 in) over a span of 14 days.

September Precipitation Trends in Courtenay

The chart displays monthly precipitation patterns in Courtenay, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Courtenay, September typically receives around 182 mm (7.2 inches) of precipitation spread over approximately 14 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Courtenay

In Courtenay in September, humidity is 81%. With an average temperature of 15°C (60°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sluggish and draining, which can challenge even the best-prepared traveler.

September Average Humidity in Courtenay

This chart illustrates the average monthly humidity levels in Courtenay, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Courtenay is approximately 81%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Courtenay

In Courtenay in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Courtenay.

Maximum UV Index Levels in Courtenay for September

The chart shows the monthly maximum UV Index (UVI) for Courtenay in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Courtenay typically reaches 7, which falls under the high exposure category.

Data source: Courtenay September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Courtenay Compares to Other Months

Weather in Courtenay varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Courtenay, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Courtenay, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	293 mm (11.6 inches)	86%	low
February Weather	3°C (38°F)	163 mm (6.4 inches)	84%	moderate
March Weather	6°C (42°F)	150 mm (5.9 inches)	83%	moderate
April Weather	8°C (47°F)	135 mm (5.3 inches)	83%	high
May Weather	13°C (55°F)	66 mm (2.6 inches)	83%	very high
June Weather	15°C (60°F)	77 mm (3.0 inches)	84%	very high
July Weather	18°C (65°F)	33 mm (1.3 inches)	85%	very high
August Weather	19°C (66°F)	61 mm (2.4 inches)	80%	very high
September Weather	15°C (60°F)	182 mm (7.2 inches)	81%	high
October Weather	10°C (50°F)	237 mm (9.3 inches)	84%	moderate
November Weather	7°C (45°F)	346 mm (13.6 inches)	84%	low
December Weather	4°C (40°F)	299 mm (11.8 inches)	86%	low