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August Weather in Port Alberni, Canada

Last updated: June 18, 2025

In August, the average temperature in Port Alberni, Canada is a pleasant 18°C (64°F). Expect temperatures to range from a minimum of 10°C (50°F) to a maximum of 32°C (90°F). During this month, you can anticipate 41 mm (1.6 in) of precipitation spread over about 5 days, while the average humidity hovers around 77%.

August Temperature in Port Alberni

In August in Port Alberni, the average temperature is 18°C (64°F). Maximums can reach 32°C (90°F), and minimums can dip as low as 10°C (50°F). It's advisable to pack layers to accommodate the wide range of temperatures while exploring.

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

The chart illustrates August 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, August typically has an average temperature of 18°C (64°F), with highs reaching up to 32°C (90°F) and lows dropping to around 10°C (50°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.

August Precipitation in Port Alberni

In Port Alberni in August, the precipitation amount is 41 mm (1.6 in) over a period of 5 days.

August Precipitation Trends in Port Alberni

The chart displays monthly precipitation patterns in Port Alberni, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Port Alberni, August typically receives around 41 mm (1.6 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec28616116014267672742157200323274
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Port Alberni

In Port Alberni in August humidity is 77%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making it feel muggy and potentially uncomfortable for traveling, as sweat clings to your skin and the air thickens around you.

August Average Humidity in Port Alberni

This chart illustrates the average monthly humidity levels in Port Alberni, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Port Alberni is approximately 77%, 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 August generated using information from the Copernicus Climate Change Service.

August UV Index in Port Alberni

In Port Alberni in August, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Port Alberni.

Maximum UV Index Levels in Port Alberni for August

The chart shows the monthly maximum UV Index (UVI) for Port Alberni in August, 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 August, the maximum UV index in Port Alberni typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987521
Data source: Port Alberni August 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 August 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 August’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 August’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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