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September Weather in Port Coquitlam, Canada

Last updated: June 18, 2025

In September, the average temperature in Port Coquitlam, Canada hovers around 15°C (59°F), with a minimum reaching 6°C (43°F) and a maximum soaring to 33°C (91°F). Expect 231 mm (9.1 in) of precipitation over 15 days, contributing to a notably high average humidity of 76%. Remember to pack accordingly for the variable weather!

September Temperature in Port Coquitlam

In September in Port Coquitlam, the average temperature is 15°C (59°F). Maximums can reach 33°C (91°F), while minimums can drop as low as 6°C (43°F). Be prepared for a range of weather conditions when traveling during this time.

September Weather in Port Coquitlam: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Port Coquitlam, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Coquitlam, September typically has an average temperature of 15°C (59°F), with highs reaching up to 33°C (91°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec373541475459646459484337
Data source: Temperature data for Port Coquitlam 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 Port Coquitlam

In Port Coquitlam in September, the precipitation amount is 231 mm (9.1 in) over a span of 15 days.

September Precipitation Trends in Port Coquitlam

The chart displays monthly precipitation patterns in Port Coquitlam, 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 Port Coquitlam, September typically receives around 231 mm (9.1 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec3382262421961101085249231308440348
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Port Coquitlam

In Port Coquitlam 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 Port Coquitlam

This chart illustrates the average monthly humidity levels in Port Coquitlam, 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 Port Coquitlam is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%86%86%81%83%84%77%76%88%87%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Port Coquitlam

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

Maximum UV Index Levels in Port Coquitlam for September

The chart shows the monthly maximum UV Index (UVI) for Port Coquitlam 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 Port Coquitlam typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234678986421
Data source: Port Coquitlam 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 Port Coquitlam Compares to Other Months

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

This table compares monthly weather conditions in Port Coquitlam, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)338 mm (13.3 inches)86%low
February Weather2°C (36°F)226 mm (8.9 inches)85%moderate
March Weather5°C (42°F)242 mm (9.5 inches)86%moderate
April Weather8°C (47°F)196 mm (7.7 inches)86%high
May Weather12°C (55°F)110 mm (4.3 inches)81%high
June Weather15°C (59°F)108 mm (4.3 inches)83%very high
July Weather18°C (64°F)52 mm (2.1 inches)84%very high
August Weather18°C (65°F)49 mm (1.9 inches)77%very high
September Weather15°C (59°F)231 mm (9.1 inches)76%high
October Weather9°C (49°F)308 mm (12.1 inches)88%moderate
November Weather6°C (43°F)440 mm (17.3 inches)87%low
December Weather3°C (37°F)347 mm (13.7 inches)87%low

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