September Weather in North Cowichan, Canada

Last updated: June 18, 2025

In North Cowichan, Canada, the average temperature in September hovers around 15°C (59°F). Expect a comfortable range, with minimum temperatures dipping to 5°C (42°F) and highs reaching up to 31°C (89°F). However, be prepared for some rain, as 120 mm (4.7 in) of precipitation can be expected over 11 days. With an average humidity of 76%, North Cowichan offers a refreshing yet humid climate during this month.

September Temperature in North Cowichan

In September in North Cowichan, the average temperature is 15°C (59°F). Maximums can reach 31°C (89°F), and minimums can be as low as 5°C (42°F). Be prepared for a wide range of temperatures, making it a great time for exploring with layered clothing.

September Weather in North Cowichan: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in North Cowichan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In North Cowichan, September typically has an average temperature of 15°C (59°F), with highs reaching up to 31°C (89°F) and lows dropping to around 5°C (42°F).

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

September Precipitation in North Cowichan

In North Cowichan in September, the precipitation amount is 120 mm (4.7 in) during a span of 11 days.

September Precipitation Trends in North Cowichan

The chart displays monthly precipitation patterns in North Cowichan, 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 North Cowichan, September typically receives around 120 mm (4.7 inches) of precipitation spread over approximately 11 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 North Cowichan

In North Cowichan in September humidity is 76%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities less enjoyable and often leading to a quick sense of fatigue while traveling.

September Average Humidity in North Cowichan

This chart illustrates the average monthly humidity levels in North Cowichan, 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 North Cowichan is approximately 76%, 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 North Cowichan

In North Cowichan 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 North Cowichan.

Maximum UV Index Levels in North Cowichan for September

The chart shows the monthly maximum UV Index (UVI) for North Cowichan 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 North Cowichan typically reaches 7, which falls under the high exposure category.

Data source: North Cowichan 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 North Cowichan Compares to Other Months

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

This table compares monthly weather conditions in North Cowichan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	215 mm (8.5 inches)	86%	low
February Weather	2°C (36°F)	131 mm (5.2 inches)	85%	moderate
March Weather	5°C (41°F)	118 mm (4.6 inches)	86%	moderate
April Weather	8°C (47°F)	111 mm (4.4 inches)	86%	high
May Weather	12°C (55°F)	54 mm (2.1 inches)	81%	very high
June Weather	15°C (60°F)	48 mm (1.9 inches)	83%	very high
July Weather	18°C (65°F)	18 mm (0.7 inches)	84%	very high
August Weather	19°C (66°F)	24 mm (1.0 inches)	77%	very high
September Weather	15°C (59°F)	120 mm (4.7 inches)	76%	high
October Weather	9°C (49°F)	151 mm (6.0 inches)	88%	moderate
November Weather	6°C (43°F)	245 mm (9.6 inches)	87%	low
December Weather	3°C (37°F)	214 mm (8.4 inches)	87%	low