July weather forecast
Ottawa, Canada

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A view of The Parliament Hill from the Ottawa River in Ottawa, Canada
A view of The Parliament Hill from the Ottawa River in Ottawa, Canada

Weather in July

July in Ottawa is perhaps the city's favorite month, presenting weather conditions that are akin to summer in full bloom. The temperatures touch their peak for the year at 25.3°C (77.5°F), marking the zenith of the warm season. Outdoor activities reign supreme as parks and picnic spots get filled with residents and visitors alike. The city stays abuzz with events, festivals and parades, capitalizing on the splendid weather.

Temperature

Ottawa's warmest temperatures are experienced in July, with average high temperatures of 25.3°C (77.5°F) and lows of 14.5°C (58.1°F).

Humidity

In July, the average relative humidity in Ottawa is 79%.

Rainfall

In Ottawa, in July, it is raining for 17.1 days, with typically 61mm (2.4") of accumulated precipitation. In Ottawa, Canada, during the entire year, the rain falls for 149.6 days and collects up to 772mm (30.39") of precipitation.

Snowfall

In Ottawa, snow does not fall in June through September.

Daylight

In Ottawa, the average length of the day in July is 15h and 16min.
On the first day of the month, sunrise is at 5:18 am and sunset at 8:54 pm. On the last day of July, sunrise is at 5:46 am and sunset at 8:31 pm EDT.

Sunshine

The month with the most sunshine in Ottawa is July, with an average of 10.2h of sunshine.

UV index

June through August, with an average maximum UV index of 5, are months with the highest UV index in Ottawa, Canada. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A daily high UV index of 5 in July leads to these guidelines:
Undertake protective steps - Preventing sun damage is advised. It's recommended to limit sun exposure when its radiation is at its peak during midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
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Frequently asked questions

What is the hottest time of year in Ottawa?

Ottawa reaches its average highest temperatures in July, measuring 25.3°C (77.5°F) at the peak and 14.5°C (58.1°F) at the lowest.

What are July temperatures in Ottawa?

The average high-temperature and low-temperature during July are 25.3°C (77.5°F) and 14.5°C (58.1°F) respectively.

What is the average humidity in July in Ottawa?

In Ottawa, the average relative humidity in July is 79%.

How much does it rain in Ottawa in July?

In Ottawa, in July, it is raining for 17.1 days, with typically 61mm (2.4") of accumulated precipitation.

When it does not snow in Ottawa?

June through September are months without snowfall in Ottawa.

What is the average length of the day in July in Ottawa?

In Ottawa, Canada, the average day length in July is 15h and 16min.

When are sunrise and sunset in July in Ottawa?

In July, on the first day of the month, sunrise is at 5:18 am and sunset at 8:54 pm. On the last day of the month, in Ottawa, Canada, sunrise is at 5:46 am and sunset at 8:31 pm EDT.

What month has the most sunshine in Ottawa?

The month with the most sunshine is July, with an average of 10.2h of sunshine.

How long on average sun shines in July in Ottawa?

In July, the average sunshine duration in Ottawa is 10.2h.

What is the month with the highest UV index in Ottawa?

The months with the highest UV index are June through August, with an average maximum UV index of 5.

What is the UV index intensity in July in Ottawa?

The average daily maximum UV index in July is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Ottawa, Canada

Average temperature in July - Ottawa, Canada
  • Average high temperature in July: 25.3°C

The warmest month (with the highest average high temperature) is July (25.3°C).
The month with the lowest average high temperature is January (-6.3°C).

  • Average low temperature in July: 14.5°C

The month with the highest average low temperature is July (14.5°C).
The coldest month (with the lowest average low temperature) is January (-14.5°C).

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Average pressure in July
Ottawa, Canada

Average pressure in July - Ottawa, Canada
  • Average pressure in July: 1013.1mbar

The month with the highest atmospheric pressure is March (1018mbar).
The month with the lowest atmospheric pressure is June (1012.5mbar).

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Average wind speed in July
Ottawa, Canada

Average wind speed in July - Ottawa, Canada
  • Average wind speed in July: 9.8km/h

The windiest month (with the highest average wind speed) is April (14km/h).
The calmest month (with the lowest average wind speed) is July (9.8km/h).

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Average humidity in July
Ottawa, Canada

Average humidity in July - Ottawa, Canada
  • Average humidity in July: 79%

The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (77%).

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Average rainfall in July
Ottawa, Canada

Average rainfall in July - Ottawa, Canada
  • Average rainfall in July: 61mm

The wettest month (with the highest rainfall) is October (78mm).
The driest month (with the least rainfall) is September (54mm).

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Average rainfall days in July
Ottawa, Canada

Average rainfall days in July - Ottawa, Canada
  • Average rainfall days in July: 17.1 days

The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is February (5.9 days).

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Average snowfall in July
Ottawa, Canada

Average snowfall in July - Ottawa, Canada
  • Average snowfall in July: 0mm

The month with the highest snowfall is January (321mm).
The months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in July
Ottawa, Canada

Average snowfall days in July - Ottawa, Canada
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (19.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in July /
Average sunshine in July
Ottawa, Canada

Average daylight in July / Average sunshine in July - Ottawa, Canada
  • Average daylight in July: 15h and 2min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in July: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).

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Average sunshine days in July
Ottawa, Canada

Average sunshine days in July - Ottawa, Canada
  • Average sunshine days in July: 11.9 days

The month with the most sunshine days is September (15 days).
The month with the least sunshine days is February (9.1 days).

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Average UV index in July
Ottawa, Canada

Average UV index in July - Ottawa, Canada
  • Average UV index in July: 5

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in July
Ottawa, Canada

Average cloud cover in July - Ottawa, Canada
  • Average cloud cover in July: 32

The months with the most cloud cover are January and February (Cloud cover 69).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in July
Ottawa, Canada

Average visibility in July - Ottawa, Canada
  • Average visibility in July: 9km

The months with the highest visibility are April, May, June, July, August and October (9km).
The months with the lowest visibility are January and February (7km).

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Ottawa, Canada

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