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August Weather in Chilliwack, Canada

Last updated: June 18, 2025

In Chilliwack, Canada, the average temperature in August hovers around 17°C (62°F), offering a pleasant climate for outdoor activities. Expect a minimum chill of around 7°C (45°F) and an occasional peak of 33°C (91°F), ensuring a diverse range of experiences. With 42 mm (1.7 in) of precipitation spread over 8 days, it’s wise to keep an umbrella handy. Additionally, the average humidity sits at a comfortable 77%, making for a refreshing ambiance throughout the month.

August Temperature in Chilliwack

In August in Chilliwack, the average temperature is 17°C (62°F). Maximums can reach 33°C (91°F), and minimums can be as low as 7°C (45°F). This climate offers a comfortable range for travelers, making it an ideal time to explore outdoor attractions and enjoy local activities.

August Weather in Chilliwack: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Chilliwack, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chilliwack, August typically has an average temperature of 17°C (62°F), with highs reaching up to 33°C (91°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec323037435256616256453832
Data source: Temperature data for Chilliwack 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 Chilliwack

In Chilliwack in August, the precipitation amount is 42 mm (1.7 in) over the course of 8 days.

August Precipitation Trends in Chilliwack

The chart displays monthly precipitation patterns in Chilliwack, 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 Chilliwack, August typically receives around 42 mm (1.7 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec305272236181103965642187292435346
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Chilliwack

In Chilliwack in August humidity is 77%. With an average temperature of 17°C (62°F), this humidity feels like a warm embrace, creating a lush, almost tropical atmosphere that can be quite stifling for traveling, making it essential to stay hydrated and take frequent breaks in the shade.

August Average Humidity in Chilliwack

This chart illustrates the average monthly humidity levels in Chilliwack, 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 Chilliwack is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%88%86%82%82%85%77%76%88%88%89%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Chilliwack

In Chilliwack 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 Chilliwack.

Maximum UV Index Levels in Chilliwack for August

The chart shows the monthly maximum UV Index (UVI) for Chilliwack 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 Chilliwack typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Chilliwack 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 Chilliwack Compares to Other Months

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

This table compares monthly weather conditions in Chilliwack, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)305 mm (12.0 inches)87%low
February Weather-1°C (30°F)272 mm (10.7 inches)86%moderate
March Weather3°C (37°F)236 mm (9.3 inches)88%moderate
April Weather6°C (43°F)181 mm (7.1 inches)86%high
May Weather11°C (52°F)103 mm (4.1 inches)82%very high
June Weather13°C (56°F)95 mm (3.8 inches)82%very high
July Weather16°C (62°F)56 mm (2.2 inches)85%very high
August Weather17°C (62°F)42 mm (1.7 inches)77%very high
September Weather13°C (56°F)187 mm (7.4 inches)76%high
October Weather7°C (45°F)292 mm (11.5 inches)88%moderate
November Weather4°C (39°F)435 mm (17.1 inches)88%low
December Weather0°C (33°F)346 mm (13.6 inches)89%low

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