September Weather in Surrey, Canada

Last updated: June 18, 2025

In September, the average temperature in Surrey, Canada hovers around 16°C (61°F). Expect a minimum of 7°C (45°F) and a maximum soaring to 33°C (91°F). With 149 mm (5.9 in) of precipitation spread over 12 days, staying dry might be a challenge. Humidity levels can be fairly high at 76%, making the air feel a bit more tropical.

September Temperature in Surrey

In September in Surrey, the average temperature is 16°C (61°F), with maximums reaching 33°C (91°F) and minimums dropping to as low as 7°C (45°F). This variation in temperature makes it advisable to pack layers for your travels.

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

The chart illustrates September temperature patterns in Surrey, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Surrey, September typically has an average temperature of 16°C (61°F), with highs reaching up to 33°C (91°F) and lows dropping to around 7°C (45°F).

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

September Precipitation in Surrey

In Surrey in September, the precipitation amount is 149 mm (5.9 in) spread over 12 days.

September Precipitation Trends in Surrey

The chart displays monthly precipitation patterns in Surrey, 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 Surrey, September typically receives around 149 mm (5.9 inches) of precipitation spread over approximately 12 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Surrey

In Surrey in September humidity is 76%. With an average temperature of 16°C (61°F), this humidity feels like a warm embrace that makes traveling feel slightly heavy yet refreshing, often prompting you to seek shade or indulge in ice-cold drinks to stay comfortable.

September Average Humidity in Surrey

This chart illustrates the average monthly humidity levels in Surrey, 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 Surrey 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 Surrey

In Surrey 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 Surrey, you can refer to this Hourly UV Index in Surrey.

Maximum UV Index Levels in Surrey for September

The chart shows the monthly maximum UV Index (UVI) for Surrey 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 Surrey typically reaches 6, which falls under the high exposure category.

Data source: Surrey 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 Surrey Compares to Other Months

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

This table compares monthly weather conditions in Surrey, 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)	220 mm (8.6 inches)	86%	low
February Weather	4°C (39°F)	165 mm (6.5 inches)	85%	moderate
March Weather	7°C (45°F)	159 mm (6.3 inches)	86%	moderate
April Weather	10°C (50°F)	135 mm (5.3 inches)	86%	high
May Weather	13°C (56°F)	73 mm (2.9 inches)	81%	high
June Weather	16°C (61°F)	60 mm (2.3 inches)	83%	very high
July Weather	18°C (66°F)	28 mm (1.1 inches)	84%	very high
August Weather	19°C (66°F)	23 mm (0.9 inches)	77%	very high
September Weather	16°C (61°F)	149 mm (5.9 inches)	76%	high
October Weather	10°C (51°F)	198 mm (7.8 inches)	88%	moderate
November Weather	7°C (45°F)	296 mm (11.7 inches)	87%	low
December Weather	4°C (40°F)	238 mm (9.4 inches)	87%	low