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August Weather in Louiseville, Canada

Last updated: June 18, 2025

In August, the average temperature in Louiseville, Canada hovers around 20°C (69°F), with a comfortable average humidity of 78%. Expect a range from a cool 7°C (45°F) to a warm 33°C (91°F). Be prepared for some rain, as 103 mm (4.1 in) of precipitation may fall over 12 days. Enjoy the balance of warmth and refreshment this season brings!

August Temperature in Louiseville

In August in Louiseville, the average temperature is 20°C (69°F). Maximums can reach 33°C (91°F), and minimums can drop as low as 7°C (45°F). It's a great time to pack for both warm sunny days and cooler evenings while exploring the area.

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

The chart illustrates August temperature patterns in Louiseville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Louiseville, August typically has an average temperature of 20°C (69°F), with highs reaching up to 33°C (91°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec151726405565716860483220
Data source: Temperature data for Louiseville 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 Louiseville

In Louiseville in August, the total precipitation amount is 103 mm (4.1 in), occurring over the course of 12 days.

August Precipitation Trends in Louiseville

The chart displays monthly precipitation patterns in Louiseville, 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 Louiseville, August typically receives around 103 mm (4.1 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec83828711692100891036412211595
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Louiseville

In Louiseville in August, humidity is 78%. With an average temperature of 20°C (69°F), this humidity feels like a warm, enveloping blanket, making travel somewhat uncomfortable as sweat clings to your skin and the air feels thick and heavy, urging you to seek out shaded areas and refreshing drinks.

August Average Humidity in Louiseville

This chart illustrates the average monthly humidity levels in Louiseville, 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 Louiseville 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 Louiseville

In Louiseville 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 Louiseville.

Maximum UV Index Levels in Louiseville for August

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

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

This table compares monthly weather conditions in Louiseville, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (15°F)83 mm (3.3 inches)95%low
February Weather-8°C (17°F)82 mm (3.2 inches)94%moderate
March Weather-3°C (27°F)87 mm (3.4 inches)90%moderate
April Weather4°C (40°F)115 mm (4.5 inches)86%high
May Weather13°C (56°F)92 mm (3.6 inches)77%very high
June Weather18°C (65°F)100 mm (3.9 inches)71%very high
July Weather22°C (71°F)89 mm (3.5 inches)79%very high
August Weather20°C (69°F)103 mm (4.1 inches)78%very high
September Weather15°C (60°F)64 mm (2.5 inches)78%high
October Weather9°C (48°F)122 mm (4.8 inches)87%moderate
November Weather0°C (33°F)115 mm (4.5 inches)90%moderate
December Weather-7°C (20°F)95 mm (3.7 inches)93%low

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