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, the same as December, in Ottawa, Canada, is another subzero cold winter month, with average temperature ranging between max -5.8°C (21.6°F) and min -14.8°C (5.4°F). The coldest month is January, with an average high-temperature of -5.8°C (21.6°F) and an average low-temperature of -14.8°C (5.4°F). Weather in January »

The last month of the winter, February, is another freezing cold month in Ottawa, Canada, with temperature in the range of an average low of -12.7°C (9.1°F) and an average high of -3.4°C (25.9°F). In February, the average high-temperature is essentially the same as in January - a still subzero cold -3.4°C (25.9°F). Weather in February »

The first month of the spring, March, is a wintry month in Ottawa, Canada, with average temperature varying between -7°C (19.4°F) and 2.5°C (36.5°F). In March, the average high-temperature rises, from a freezing 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 high of 11.6°C (52.9°F) and an average low of 1°C (33.8°F). In Ottawa, Canada, the average high-temperature increases considerably, from a cold 2.5°C (36.5°F) in March, to a cool 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 ranging between max 19°C (66.2°F) and min 7.5°C (45.5°F). In Ottawa, the average high-temperature in May rises, from a fresh 11.6°C (52.9°F) in April, to an enjoyable 19°C (66.2°F). Weather in May »

The first month of the summer, June, is a warm month in Ottawa, Canada, with average temperature ranging between max 24.1°C (75.4°F) and min 12.9°C (55.2°F). In Ottawa, the average high-temperature in June rises, from a comfortable 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 a moderately hot summer month, with average temperature varying between 15.5°C (59.9°F) and 26.5°C (79.7°F). The warmest month is July, with an average high-temperature of 26.5°C (79.7°F) and an average low-temperature of 15.5°C (59.9°F). Weather in July »

August, the last month of the summer, in Ottawa, is another warm month, with temperature in the range of an average low of 14.3°C (57.7°F) and an average high of 25.3°C (77.5°F). In August, the average high-temperature is almost the same as in July - a still warm 25.3°C (77.5°F). Weather in August »

September, the first month of the autumn, in Ottawa, is also an agreeable month, with average temperature ranging between min 9.6°C (49.3°F) and max 20.4°C (68.7°F). In Ottawa, Canada, the average high-temperature in September 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 in October decreases, from a pleasant 20.4°C (68.7°F) in September, to a fresh 12.7°C (54.9°F). Weather in October »

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

The first month of the winter, December, is still a freezing cold month in Ottawa, Canada, with average temperature varying between -10.1°C (13.8°F) and -2.3°C (27.9°F). In Ottawa, the average high-temperature in December drops, from a wintry 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, 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?

Throughout the year, in Ottawa, there are 118.4 rainfall days, and 758.4mm (29.9") of precipitation is accumulated.

When does it snow in Ottawa?

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

How many days does it snow in Ottawa?

Throughout the year, in Ottawa, Canada, there are 63.3 snowfall days, and 2234mm (88") of snow is accumulated.

When does it snow the most in Ottawa?

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

What are the months with the lowest UV index in Ottawa?

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

What is the driest month in Ottawa?

February is the month with the least rainfall. Rain falls for 3.9 days and accumulates 18.7mm (0.7") of precipitation.

What is the least humid month in Ottawa?

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

What is the rainiest month in Ottawa?

The month with the most rainfall in Ottawa is June when the rain falls for 13.2 days and typically aggregates up to 92.8mm (3.7") of precipitation.

When it does not snow in Ottawa?

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

When are the longest days in Ottawa?

The month with the longest days is June, with an average of 15.6h of daylight.

When is the highest UV index in Ottawa?

With an average maximum UV index of 8, June is the month with the highest UV index.

What is the warmest month in Ottawa?

July is the warmest month in Ottawa, 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?

The month with the most sunshine in Ottawa is July, with an average of 9.7h of sunshine.

What is the most humid month in Ottawa?

December is the most humid month, with an average relative humidity of 72.2%.

What is the month with the shortest days in Ottawa?

The month with the shortest days in Ottawa 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