Ottawa
Canada
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Ottawa, Canada

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
January, like December, is a freezing cold winter month in Ottawa, Canada, with average temperature ranging between min -14.8°C (5.4°F) and max -5.8°C (21.6°F). With an average high-temperature of -5.8°C (21.6°F) and an average low-temperature of -14.8°C (5.4°F), January is the coldest month. Weather in January »
The last month of the winter, February, is another freezing cold month in Ottawa, Canada, with average temperature ranging between min -12.7°C (9.1°F) and max -3.4°C (25.9°F). In February, the average high-temperature is relatively the same as in January - a still subzero cold -3.4°C (25.9°F). Weather in February »

March, the first month of the spring, in Ottawa, is a cold month, with average temperature ranging between min -7°C (19.4°F) and max 2.5°C (36.5°F). In Ottawa, the average high-temperature increases, from a subzero cold -3.4°C (25.9°F) in February, to a cold 2.5°C (36.5°F). Weather in March »

April in Ottawa, Canada, is a fresh spring month, with temperature in the range of an average low of 1°C (33.8°F) and an average high of 11.6°C (52.9°F). In Ottawa, the average high-temperature soars, from a cold 2.5°C (36.5°F) in March, to a fresh 11.6°C (52.9°F). Weather in April »

May, the last month of the spring, in Ottawa, is a comfortable month, with average temperature fluctuating between 19°C (66.2°F) and 7.5°C (45.5°F). In May, the average high-temperature rises, from a cool 11.6°C (52.9°F) in April, to a comfortable 19°C (66.2°F). Weather in May »

June, the first month of the summer, in Ottawa, is a warm month, with average temperature ranging between max 24.1°C (75.4°F) and min 12.9°C (55.2°F). In June, the average high-temperature rises, from an enjoyable 19°C (66.2°F) in May, to a warm 24.1°C (75.4°F). Weather in June »

July, like June, in Ottawa, Canada, is another warm summer month, with average temperature ranging between max 26.5°C (79.7°F) and min 15.5°C (59.9°F). With an average high-temperature of 26.5°C (79.7°F) and an average low-temperature of 15.5°C (59.9°F), July is the warmest month. Weather in July »

August, the last month of the summer, in Ottawa, is another warm month, with average temperature ranging between min 14.3°C (57.7°F) and max 25.3°C (77.5°F). In August, the average high-temperature is essentially the same as in July - a still moderately hot 25.3°C (77.5°F). Weather in August »

The first month of the autumn, September, is still a pleasant month in Ottawa, Canada, with average temperature ranging between max 20.4°C (68.7°F) and min 9.6°C (49.3°F). In Ottawa, the average high-temperature slightly decreases, from a warm 25.3°C (77.5°F) in August, to an agreeable 20.4°C (68.7°F). Weather in September »

October, the same as September, is another fresh autumn month in Ottawa, Canada, with average temperature fluctuating between 3.3°C (37.9°F) and 12.7°C (54.9°F). In Ottawa, the average high-temperature decreases, from a pleasant 20.4°C (68.7°F) in September, to a fresh 12.7°C (54.9°F). Weather in October »

The last month of the autumn, November, is another cold month in Ottawa, Canada, with average temperature fluctuating between -2.4°C (27.7°F) and 5.4°C (41.7°F). In Ottawa, Canada, the average high-temperature in November decreases, from a cool 12.7°C (54.9°F) in October, to a wintry 5.4°C (41.7°F). Weather in November »

December, the first month of the winter, in Ottawa, is also a subzero cold month, with average temperature ranging between min -10.1°C (13.8°F) and max -2.3°C (27.9°F). In December, the average high-temperature decreases, from a cold 5.4°C (41.7°F) in November, to a freezing cold -2.3°C (27.9°F). Weather in December »

What is the coldest month in Ottawa?

January is the coldest month in Ottawa, with an average high-temperature of -5.8°C (21.6°F) and an average low-temperature of -14.8°C (5.4°F).

How many days does it rain in Ottawa?

In Ottawa, during the entire year, the rain falls for 118.4 days and collects up to 758.4mm (29.9") of precipitation.

When does it snow in Ottawa?

Months with snowfall in Ottawa, Canada, are January through May, October through December.

How much does it snow in Ottawa?

In Ottawa, Canada, during the entire year, snow falls for 63.3 days, and aggregates up to 2234mm (88") of snow.

What is the snowiest month in Ottawa?

January is the month with the most snowfall in Ottawa. Snow falls for 16.1 days and accumulates 539mm (21.2") of snow.

When is the lowest UV index in Ottawa?

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Ottawa.

What is the driest month in Ottawa?

The month with the least rainfall in Ottawa is February when the rain falls for 3.9 days and typically collects 18.7mm (0.7") of precipitation.

What is the least humid month in Ottawa?

May is the least humid month in Ottawa, with an average relative humidity of 49.9%.

What is the rainiest month in Ottawa?

June is the month with the most rainfall. Rain falls for 13.2 days and accumulates 92.8mm (3.7") of precipitation.

When are the longest days in Ottawa?

June has the longest days of the year, with an average of 15.6h of daylight.

When is the highest UV index in Ottawa?

The month with the highest UV index in Ottawa is June, with an average maximum UV index of 8.

What is the warmest month in Ottawa?

July is the warmest month in Ottawa, Canada, with an average high-temperature of 26.5°C (79.7°F) and an average low-temperature of 15.5°C (59.9°F).

What month has the most sunshine in Ottawa?

July has the most sunshine of the year, with an average of 9.7h of sunshine.

What is the most humid month in Ottawa?

With an average relative humidity of 72.2%, December is the most humid month in Ottawa, Canada.

What is the month with the shortest days in Ottawa?

The month with the shortest days in Ottawa, Canada, is December, with an average of 8.8h of daylight.

What is the month with the least sunshine in Ottawa?

The month with the least sunshine in Ottawa is December, with an average of 2.2h of sunshine.
Average temperature - Ottawa, Canada
Average humidity - Ottawa, Canada
Average rainfall - Ottawa, Canada

The wettest month (with the highest rainfall) is June (92.8mm).
The driest month (with the lowest rainfall) is February (18.7mm).

Average rainfall days - Ottawa, Canada

The month with the highest number of rainy days is October (13.7 days).
The month with the lowest number of rainy days is February (3.9 days).

Average snowfall - Ottawa, Canada
Average snowfall days - Ottawa, Canada

The month with the highest number of snowfall days is January (16.1 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine - Ottawa, Canada