Temperatures in July
It's warm in July in Ontario with an average temperature of 27°C. Temperatures this month range from a low of 26°C to a high of 29°C. At night, you can expect temperatures between 18°C and 21°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Ontario in July. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of July
The month of July starts in Ontario with hot temperatures, averaging around 28°C during the day and nights close to 19°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Since temperatures can differ between day and night, it’s a good idea to dress in layers.
Mid-July
By mid-July, the average daytime temperature stays the same at 28°C, with nights close to 20°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
Temperatures vary between day and night, so it’s smart to wear layers.
End of July
By the end of July, the average daytime temperature in Ontario will be around 28°C, with nights close to 20°C. A shower might show up, but overall the weather will be dry and sunny.
As it gets cooler in the evening, it’s best to wear layers.
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Precipitation in July
In July, there is an average of 66 mm of precipitation, spread over 9 days. The wind speed is around 4 Bft, mostly coming from the South.
The average precipitation chance is 29% per day this month. Though it seems pretty low, the weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in July for Ontario. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Ontario in July |
UK | ||
|---|---|---|---|
 Average Temperature |
27°C | 23°C | |
 High Temp |
29°C | 27°C | |
| Low Temp |
26°C | 21°C | |
 Total Precipitation |
66 mm | 52 mm | |
| Rainy Days |
9 days | 9 days | |
June
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is July a good time to visit Ontario?
Want nice weather? Then July is a great time to be in Ontario. You’ll have pleasant temperatures and not too much rain this month.
Temperature records for Ontario in July
With 35°C, Ontario hit the highest temperature in the last 10 years in July 2020. The lowest daytime temperature in this month was 18°C in 2021. The extreme night temperatures ranged from a low of 12°C to a high of 25°C.
Check out the climate of Ontario for all months and discover the best travel time
Curious about the climate in other parts of Canada? Check out the weather and climate in places like Vancouver, Toronto, Niagara Falls, or have a look at other destinations in Canada.
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Daily Temperature in July in Ontario
This chart shows the average daily temperatures, both day and night, for each day in July in Ontario, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in July in Ontario
The chart below shows the average daily precipitation in July for Ontario, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for July, you can expect around 9 days of rain in Ontario.
Daily UV Index in July in Ontario
This chart shows the average daily UV index in July in Ontario, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in July in Ontario Over the Years
This chart shows the average temperature in July in Ontario, measured in degrees Celsius, over the past years.
Total Precipitation in July in Ontario Over the Years
This chart shows the average precipitation in July in Ontario, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in July for Ontario
Click on a specific day in July for detailed info on the typical weather on that day in Ontario. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in July in Ontario
Have you been to Ontario in July?
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Average Weather in Ontario by Month
Click on a month below to see detailed weather info for Ontario. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
