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September Weather in Richmond, Canada

Last updated: June 18, 2025

In Richmond, Canada, the average temperature in September hovers around 15°C (60°F). Expect a range where the temperature can dip as low as -3°C (27°F) or soar up to 30°C (87°F). During this month, you'll encounter approximately 74 mm (2.9 in) of precipitation spread over 11 days, contributing to a notable average humidity of 77%. Prepare accordingly for a mix of mild weather and occasional rain!

September Temperature in Richmond

In September in Richmond, the average temperature is 15°C (60°F), with maximums reaching 30°C (87°F) and minimums dropping as low as -3°C (27°F). Be prepared for a wide range of temperatures when planning your travels.

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

The chart illustrates September temperature patterns in Richmond, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Richmond, September typically has an average temperature of 15°C (60°F), with highs reaching up to 30°C (87°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec171928425564696759483323
Data source: Temperature data for Richmond generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Richmond

In Richmond in September, the precipitation amount is 74 mm (2.9 in) spread over the course of 11 days.

September Precipitation Trends in Richmond

The chart displays monthly precipitation patterns in Richmond, 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 Richmond, September typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec8984851181071331141257413611788
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Richmond

In Richmond in September, humidity is 77%. With an average temperature of 15°C (60°F), this humidity feels like you're wading through a warm, heavy blanket, making travel feel more exhausting and sticky than usual.

September Average Humidity in Richmond

This chart illustrates the average monthly humidity levels in Richmond, 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 Richmond is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%85%84%78%72%75%74%77%85%86%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Richmond

In Richmond 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 Richmond.

Maximum UV Index Levels in Richmond for September

The chart shows the monthly maximum UV Index (UVI) for Richmond 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 Richmond typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245799887532
Data source: Richmond 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 Richmond Compares to Other Months

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

This table compares monthly weather conditions in Richmond, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (17°F)89 mm (3.5 inches)91%low
February Weather-7°C (19°F)84 mm (3.3 inches)89%moderate
March Weather-2°C (28°F)85 mm (3.3 inches)85%moderate
April Weather5°C (42°F)118 mm (4.7 inches)84%high
May Weather13°C (55°F)107 mm (4.2 inches)78%very high
June Weather18°C (64°F)133 mm (5.2 inches)72%very high
July Weather21°C (69°F)114 mm (4.5 inches)75%very high
August Weather20°C (68°F)125 mm (4.9 inches)74%very high
September Weather15°C (60°F)74 mm (2.9 inches)77%high
October Weather9°C (49°F)136 mm (5.4 inches)85%moderate
November Weather1°C (33°F)117 mm (4.6 inches)86%moderate
December Weather-5°C (23°F)88 mm (3.5 inches)85%low

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