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Ontario weather in July

Are you planning a trip to Ontario in July and wondering what kind of weather to expect? This page has all the details you need.

What is the weather like in Ontario in July?

Ontario is a region in Canada. In July, Ontario experiences a range of weather conditions, with temperatures that range from pleasant to warm and precipitation levels ranging from moderate to high. July falls during the summer season.

During the day temperatures vary from pleasant in Schreiber at 18°C to warm in Amherstburg at 28°C. At night it cools down to 20°C in Amherstburg and 13°C in Schreiber. On average, July is the warmest month of the year in Ontario. So be prepared and pack summer clothes.

In July, precipitation varies across different areas. From moderate rainfall in Niagara on the Lake with an average of 53 mm to high rainfall in Port Colborne with 114 mm. The city Toronto usually sees around 280 hours of sunlight, indicating many sunny days.

For specific regional insights in Ontario for July, refer to the map provided below. For an in-depth overview of the yearly weather conditions, do visit our Ontario climate page.

Where to go in Ontario in July

Find the average weather conditions in July for the most popular destinations in Ontario on the map below. Click on a destination dot for more detailed information.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations in Ontario

What is the weather like in July for the 5 most popular destinations in Ontario?

Average weather in Toronto

In July Toronto generally has high temperatures with maximum daytime temperatures around 26°C, minimum nighttime temperatures around 18°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Toronto
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   June June
<<  
22°C 
14°C 
260 hours 
83 mm 
10 days 
26°C 
18°C 
280 hours 
71 mm 
9 days 
August   >> August
>>  
26°C 
18°C 
245 hours 
68 mm 
10 days 
Climate in Toronto

Average weather in Ottawa

In July Ottawa generally has high temperatures with maximum daytime temperatures around 27°C, minimum nighttime temperatures around 15°C and high monthly rainfall. So on average the conditions are pleasant that month.

Ottawa
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   June June
<<  
25°C 
12°C 
255 hours 
105 mm 
12 days 
27°C 
15°C 
280 hours 
102 mm 
11 days 
August   >> August
>>  
26°C 
14°C 
251 hours 
94 mm 
11 days 
Climate in Ottawa

Average weather in Niagara Falls

In July Niagara Falls generally has high temperatures with maximum daytime temperatures around 27°C, minimum nighttime temperatures around 17°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Niagara Falls
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   June June
<<  
25°C 
14°C 
290 hours 
90 mm 
13 days 
27°C 
17°C 
307 hours 
90 mm 
12 days 
August   >> August
>>  
26°C 
17°C 
268 hours 
67 mm 
11 days 
Climate in Niagara Falls

Average weather in Mississauga

In July Mississauga generally has high temperatures with maximum daytime temperatures around 27°C, minimum nighttime temperatures around 17°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Mississauga
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   June June
<<  
23°C 
14°C 
261 hours 
87 mm 
10 days 
27°C 
17°C 
295 hours 
76 mm 
9 days 
August   >> August
>>  
26°C 
17°C 
276 hours 
69 mm 
9 days 
Climate in Mississauga

Average weather in Niagara on the Lake

In July Niagara on the Lake generally has pleasant temperatures with maximum daytime temperatures around 20°C, minimum nighttime temperatures around 12°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Niagara on the Lake
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   June June
<<  
18°C 
10°C 
290 hours 
63 mm 
9 days 
20°C 
12°C 
307 hours 
53 mm 
9 days 
August   >> August
>>  
20°C 
12°C 
268 hours 
47 mm 
8 days 
Climate in Niagara on the Lake

Is your destination not in the list? Have a look at other destinations in Ontario, in Canada.

Is July the best time to visit Ontario?

We believe that July is one of the best times to visit Ontario with overall perfect weather in Toronto. However, the weather conditions may vary depending on your destination.

On average, the best time to visit Ontario is in June, July, August and September with generally perfect weather in Toronto. In contrast, January, February, March, April, November and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Ontario. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to Canada? Get detailed historical weather averages for many cities in Canada.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.