August Weather in Wellesley, Canada

Last updated: June 18, 2025

In Wellesley, Canada, the average temperature in August hovers around 20°C (68°F). Expect a range from a refreshing 5°C (42°F) to a warm 31°C (87°F). During this month, anticipate approximately 102 mm (4.0 in) of precipitation spread over 13 days, with the air carrying an average humidity of 80%.

August Temperature in Wellesley

In August in Wellesley, the average temperature is 20°C (68°F). The maximum can reach 31°C (87°F) and the minimum can be as low as 5°C (42°F). This makes Wellesley a comfortable destination for travelers seeking mild weather with a chance for warmer days.

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

The chart illustrates August temperature patterns in Wellesley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wellesley, August typically has an average temperature of 20°C (68°F), with highs reaching up to 31°C (87°F) and lows dropping to around 5°C (42°F).

Data source: Temperature data for Wellesley generated using information from the Copernicus Climate Change Service.

August Precipitation in Wellesley

In Wellesley in August, precipitation amounts to 102 mm (4.0 in) over the course of 13 days.

August Precipitation Trends in Wellesley

The chart displays monthly precipitation patterns in Wellesley, 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 Wellesley, August typically receives around 102 mm (4.0 inches) of precipitation spread over approximately 13 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

August Humidity in Wellesley

In Wellesley in August, humidity is 80%. With an average temperature of 20°C (68°F), this humidity feels like traveling through a warm, dense blanket that clings to your skin, making you feel both sticky and lethargic as you explore the sights.

August Average Humidity in Wellesley

This chart illustrates the average monthly humidity levels in Wellesley, 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 Wellesley is approximately 80%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Wellesley

In Wellesley 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 Wellesley.

Maximum UV Index Levels in Wellesley for August

The chart shows the monthly maximum UV Index (UVI) for Wellesley 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 Wellesley typically reaches 9, which falls under the very high exposure category.

Data source: Wellesley 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 Wellesley Compares to Other Months

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

This table compares monthly weather conditions in Wellesley, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (22°F)	77 mm (3.0 inches)	90%	low
February Weather	-5°C (23°F)	81 mm (3.2 inches)	90%	moderate
March Weather	0°C (31°F)	70 mm (2.8 inches)	87%	moderate
April Weather	5°C (42°F)	101 mm (4.0 inches)	87%	very high
May Weather	13°C (55°F)	98 mm (3.9 inches)	82%	very high
June Weather	18°C (65°F)	108 mm (4.2 inches)	81%	very high
July Weather	21°C (70°F)	79 mm (3.1 inches)	79%	very high
August Weather	20°C (68°F)	102 mm (4.0 inches)	80%	very high
September Weather	16°C (61°F)	83 mm (3.3 inches)	81%	high
October Weather	10°C (50°F)	111 mm (4.4 inches)	84%	moderate
November Weather	2°C (36°F)	89 mm (3.5 inches)	88%	moderate
December Weather	-2°C (29°F)	77 mm (3.0 inches)	87%	low