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August Weather in Oakville, United States

Last updated: June 24, 2025

In Oakville, United States, the average temperature in August is a pleasant 18°C (64°F). However, temperatures can fluctuate significantly, with a minimum of 7°C (45°F) and a maximum of 36°C (97°F). You can expect a light precipitation of 13 mm (0.5 in) over the course of 2 days, along with an average humidity level of 73%.

August Temperature in Oakville

In August in Oakville, the average temperature is 18°C (64°F). Maximums can reach 36°C (97°F) and minimums can drop as low as 7°C (45°F). This makes it a perfect time for travelers to enjoy pleasant days while being prepared for cooler evenings.

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

The chart illustrates August temperature patterns in Oakville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oakville, August typically has an average temperature of 18°C (64°F), with highs reaching up to 36°C (97°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec413944485459636459504440
Data source: Temperature data for Oakville 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 Oakville

In Oakville in August, the precipitation amount is 13 mm (0.5 in) over a span of 2 days.

August Precipitation Trends in Oakville

The chart displays monthly precipitation patterns in Oakville, 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 Oakville, August typically receives around 13 mm (0.5 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec2051711421227557111390137198210
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Oakville

In Oakville in August, humidity is 73%. With an average temperature of 18°C (64°F), this humidity feels like a warm, sticky embrace that can leave travelers feeling a bit sluggish, making outdoor activities feel more demanding and encouraging frequent breaks to hydrate and cool off.

August Average Humidity in Oakville

This chart illustrates the average monthly humidity levels in Oakville, 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 Oakville is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%85%83%84%84%82%73%74%83%86%87%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Oakville

In Oakville 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 Oakville.

Maximum UV Index Levels in Oakville for August

The chart shows the monthly maximum UV Index (UVI) for Oakville 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 Oakville typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235699987532
Data source: Oakville 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 Oakville Compares to Other Months

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

This table compares monthly weather conditions in Oakville, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)205 mm (8.1 inches)86%low
February Weather4°C (40°F)171 mm (6.7 inches)84%moderate
March Weather6°C (44°F)142 mm (5.6 inches)85%moderate
April Weather9°C (49°F)122 mm (4.8 inches)83%high
May Weather12°C (55°F)75 mm (2.9 inches)84%very high
June Weather15°C (59°F)57 mm (2.2 inches)84%very high
July Weather17°C (63°F)11 mm (0.4 inches)82%very high
August Weather18°C (64°F)13 mm (0.5 inches)73%very high
September Weather15°C (60°F)90 mm (3.5 inches)74%high
October Weather10°C (50°F)137 mm (5.4 inches)83%moderate
November Weather7°C (45°F)198 mm (7.8 inches)86%moderate
December Weather4°C (40°F)210 mm (8.3 inches)87%low

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