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September Weather in Port Alberni, Canada

Last updated: June 18, 2025

In Port Alberni, Canada, the average temperature in September hovers around 14°C (58°F), offering a pleasant climate for exploration. Expect minimum temperatures to drop to 7°C (44°F), while highs can reach up to 29°C (84°F). This month sees an average precipitation of 157 mm (6.2 in) spread over 13 days, accompanied by a humidity level of 76%, ensuring a refreshing atmosphere throughout.

September Temperature in Port Alberni

In September, in Port Alberni, the average temperature is 14°C (58°F). Maximum temperatures can reach 29°C (84°F), while minimums can drop as low as 7°C (44°F). This makes Port Alberni an ideal destination for travelers looking for mild weather with a comfortable range of temperatures.

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

The chart illustrates September temperature patterns in Port Alberni, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Alberni, September typically has an average temperature of 14°C (58°F), with highs reaching up to 29°C (84°F) and lows dropping to around 7°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec393741465358636458494339
Data source: Temperature data for Port Alberni 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 Alberni

In Port Alberni in September, the total precipitation amount is 157 mm (6.2 in) spread over 13 days.

September Precipitation Trends in Port Alberni

The chart displays monthly precipitation patterns in Port Alberni, 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 Alberni, September typically receives around 157 mm (6.2 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec28616116014267672742157200323274
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Port Alberni

In Port Alberni in September humidity is 76%. With an average temperature of 14°C (58°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor activities feel sticky and draining, and prompting travelers to seek shade and stay hydrated often.

September Average Humidity in Port Alberni

This chart illustrates the average monthly humidity levels in Port Alberni, 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 Alberni 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 Alberni

In Port Alberni 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 Port Alberni.

Maximum UV Index Levels in Port Alberni for September

The chart shows the monthly maximum UV Index (UVI) for Port Alberni 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 Alberni typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987521
Data source: Port Alberni 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 Alberni Compares to Other Months

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

This table compares monthly weather conditions in Port Alberni, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)286 mm (11.3 inches)86%low
February Weather3°C (37°F)161 mm (6.4 inches)85%moderate
March Weather5°C (41°F)160 mm (6.3 inches)86%moderate
April Weather8°C (46°F)142 mm (5.6 inches)86%high
May Weather12°C (53°F)67 mm (2.6 inches)81%very high
June Weather14°C (58°F)67 mm (2.6 inches)83%very high
July Weather17°C (63°F)27 mm (1.1 inches)84%very high
August Weather18°C (64°F)41 mm (1.6 inches)77%very high
September Weather14°C (58°F)157 mm (6.2 inches)76%high
October Weather9°C (49°F)200 mm (7.9 inches)88%moderate
November Weather6°C (44°F)323 mm (12.7 inches)87%low
December Weather4°C (39°F)274 mm (10.8 inches)87%low

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