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August Weather in Trois-Rivieres, Canada

Last updated: June 18, 2025

In Trois-Rivieres, Canada, the average temperature in August hovers around 21°C (69°F), creating a pleasant climate for outdoor activities. Expect a minimum of 8°C (46°F) and highs reaching 33°C (92°F), providing a wide range of temperatures. However, be prepared for 117 mm (4.6 in) of precipitation spread over 13 days, contributing to an average humidity of 78%. Enjoy the balance of warmth and moisture as you explore this captivating destination!

August Temperature in Trois-Rivieres

In August in Trois-Rivieres, the average temperature is 21°C (69°F). Maximum temperatures can reach 33°C (92°F), while minimums can drop to as low as 8°C (46°F). This pleasant climate makes Trois-Rivieres an ideal destination for travelers seeking both warmth and comfort during their trip.

August Weather in Trois-Rivieres: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Trois-Rivieres, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trois-Rivieres, August typically has an average temperature of 21°C (69°F), with highs reaching up to 33°C (92°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec151827415665716961493321
Data source: Temperature data for Trois-Rivieres 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 Trois-Rivieres

In Trois-Rivieres in August, the total precipitation amount is 117 mm (4.6 in) spread over 13 days.

August Precipitation Trends in Trois-Rivieres

The chart displays monthly precipitation patterns in Trois-Rivieres, 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 Trois-Rivieres, August typically receives around 117 mm (4.6 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec858190117102109981176912712095
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Trois-Rivieres

In Trois-Rivieres in August, humidity is 78%. With an average temperature of 21°C (69°F), this humidity feels like a warm embrace that clings to your skin, making outdoor activities feel more intense and leaving you yearning for refreshing breezes or a cool drink as you explore.

August Average Humidity in Trois-Rivieres

This chart illustrates the average monthly humidity levels in Trois-Rivieres, 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 Trois-Rivieres is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%94%90%86%78%71%79%78%78%87%90%93%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Trois-Rivieres

In Trois-Rivieres 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 Trois-Rivieres.

Maximum UV Index Levels in Trois-Rivieres for August

The chart shows the monthly maximum UV Index (UVI) for Trois-Rivieres 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 Trois-Rivieres typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235799887532
Data source: Trois-Rivieres 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 Trois-Rivieres Compares to Other Months

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

This table compares monthly weather conditions in Trois-Rivieres, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (16°F)85 mm (3.3 inches)95%low
February Weather-8°C (18°F)81 mm (3.2 inches)94%moderate
March Weather-3°C (27°F)90 mm (3.5 inches)90%moderate
April Weather5°C (41°F)117 mm (4.6 inches)86%high
May Weather13°C (56°F)102 mm (4.0 inches)77%very high
June Weather18°C (65°F)109 mm (4.3 inches)71%very high
July Weather22°C (71°F)98 mm (3.9 inches)79%very high
August Weather21°C (69°F)117 mm (4.6 inches)78%very high
September Weather16°C (61°F)69 mm (2.7 inches)78%high
October Weather9°C (49°F)127 mm (5.0 inches)87%moderate
November Weather1°C (33°F)120 mm (4.7 inches)90%moderate
December Weather-6°C (21°F)95 mm (3.7 inches)93%low

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