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August Weather in Rimouski, Canada

Last updated: June 18, 2025

In August, the average temperature in Rimouski, Canada is a pleasant 17°C (63°F). Expect a range from a chilly 8°C (47°F) at its lowest to a warm 25°C (77°F) at its peak. You'll likely encounter 61 mm (2.4 in) of precipitation over about 9 days, with a notable average humidity of 83%. Perfect for enjoying the unique weather!

August Temperature in Rimouski

In August in Rimouski, the average temperature is 17°C (63°F). Maximum temperatures can reach 25°C (77°F), while the minimum can dip as low as 8°C (47°F). This mild climate makes it a great time for outdoor exploration and sightseeing.

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

The chart illustrates August temperature patterns in Rimouski, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rimouski, August typically has an average temperature of 17°C (63°F), with highs reaching up to 25°C (77°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec151624344555626255463322
Data source: Temperature data for Rimouski 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 Rimouski

In Rimouski in August, the precipitation amount is 61 mm (2.4 in) spread over 9 days.

August Precipitation Trends in Rimouski

The chart displays monthly precipitation patterns in Rimouski, 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 Rimouski, August typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec786275104826964618412310886
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Rimouski

In Rimouski in August humidity is 83%. With an average temperature of 17°C (63°F), this humidity feels like a warm, sticky embrace that can make traveling uncomfortable, as the air clings to the skin and creates a heavy atmosphere, often leading to fatigue and a longing for the cooling relief of shade or air conditioning.

August Average Humidity in Rimouski

This chart illustrates the average monthly humidity levels in Rimouski, 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 Rimouski is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec94%93%91%89%82%74%80%83%85%88%89%94%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Rimouski

In Rimouski 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 Rimouski.

Maximum UV Index Levels in Rimouski for August

The chart shows the monthly maximum UV Index (UVI) for Rimouski 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 Rimouski typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789886421
Data source: Rimouski 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 Rimouski Compares to Other Months

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

This table compares monthly weather conditions in Rimouski, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (15°F)78 mm (3.1 inches)94%low
February Weather-9°C (16°F)62 mm (2.4 inches)93%moderate
March Weather-4°C (24°F)75 mm (3.0 inches)91%moderate
April Weather1°C (35°F)104 mm (4.1 inches)89%high
May Weather7°C (45°F)82 mm (3.2 inches)82%very high
June Weather13°C (55°F)69 mm (2.7 inches)74%very high
July Weather16°C (62°F)64 mm (2.5 inches)80%very high
August Weather17°C (63°F)61 mm (2.4 inches)83%very high
September Weather13°C (55°F)83 mm (3.3 inches)85%high
October Weather8°C (46°F)123 mm (4.8 inches)88%moderate
November Weather1°C (34°F)108 mm (4.3 inches)89%low
December Weather-5°C (23°F)86 mm (3.4 inches)94%low

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