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August Weather in Brockville, Canada

Last updated: June 18, 2025

In Brockville, Canada, the average temperature in August hovers around 21°C (70°F), with a minimum dipping to 10°C (50°F) and a maximum soaring up to 31°C (88°F). This month witnesses an average precipitation of 105 mm (4.2 in) over 14 days, contributing to an average humidity of 67%. Enjoy the mild weather, but be prepared for some rainy days!

August Temperature in Brockville

In August in Brockville, the average temperature is 21°C (70°F), with maximums reaching up to 31°C (88°F) and minimums dropping to as low as 10°C (50°F). This makes it an ideal time for traveling, as you can enjoy warm days and pleasant evenings.

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

The chart illustrates August temperature patterns in Brockville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Brockville, August typically has an average temperature of 21°C (70°F), with highs reaching up to 31°C (88°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec212331435565727063523828
Data source: Temperature data for Brockville 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 Brockville

In Brockville in August, the precipitation amount is 105 mm (4.2 in) spread over 14 days.

August Precipitation Trends in Brockville

The chart displays monthly precipitation patterns in Brockville, 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 Brockville, August typically receives around 105 mm (4.2 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec828284125103941271067315111393
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Brockville

In Brockville in August humidity is 67%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making travel a bit stifling but still enjoyable if you're prepared with light clothing and plenty of water.

August Average Humidity in Brockville

This chart illustrates the average monthly humidity levels in Brockville, 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 Brockville is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%93%86%82%75%68%69%67%72%83%88%89%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Brockville

In Brockville in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Brockville.

Maximum UV Index Levels in Brockville for August

The chart shows the monthly maximum UV Index (UVI) for Brockville 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 Brockville typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245899997532
Data source: Brockville 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 Brockville Compares to Other Months

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

This table compares monthly weather conditions in Brockville, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)82 mm (3.2 inches)93%low
February Weather-5°C (23°F)82 mm (3.2 inches)93%moderate
March Weather0°C (31°F)84 mm (3.3 inches)86%moderate
April Weather6°C (44°F)125 mm (4.9 inches)82%very high
May Weather13°C (56°F)103 mm (4.1 inches)75%very high
June Weather18°C (65°F)94 mm (3.7 inches)68%very high
July Weather22°C (72°F)127 mm (5.0 inches)69%very high
August Weather21°C (70°F)105 mm (4.2 inches)67%very high
September Weather17°C (63°F)73 mm (2.9 inches)72%high
October Weather11°C (52°F)151 mm (5.9 inches)83%moderate
November Weather3°C (38°F)113 mm (4.5 inches)88%moderate
December Weather-2°C (29°F)93 mm (3.7 inches)89%low

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