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 another subzero 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). 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 also a subzero cold month in Ottawa, Canada, with average temperature varying between -3.4°C (25.9°F) and -12.7°C (9.1°F). The average high-temperature, in February, is -3.4°C (25.9°F), while the average low-temperature is -12.7°C (9.1°F). Weather in February »

March, the first month of the spring, in Ottawa, is a cold month, with temperature in the range of an average high of 2.5°C (36.5°F) and an average low of -7°C (19.4°F). The average high-temperature, is 2.5°C (36.5°F), while the average low-temperature is -7°C (19.4°F). Weather in March »

April is a cool spring month in Ottawa, Canada, with average temperature fluctuating between 1°C (33.8°F) and 11.6°C (52.9°F). In Ottawa, the average high-temperature is 11.6°C (52.9°F), and the average low-temperature is 1°C (33.8°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). The average high-temperature, in May, is 19°C (66.2°F), while the average low-temperature is 7.5°C (45.5°F). Weather in May »

June, the first month of the summer, in Ottawa, is a warm month, with temperature in the range of an average low of 12.9°C (55.2°F) and an average high of 24.1°C (75.4°F). In Ottawa, Canada, the average high-temperature is 24.1°C (75.4°F), and the average low-temperature is 12.9°C (55.2°F). Weather in June »

July, like June, in Ottawa, Canada, is another warm summer month, with temperature in the range of an average low of 15.5°C (59.9°F) and an average high of 26.5°C (79.7°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 also a warm month, with average temperature fluctuating between 14.3°C (57.7°F) and 25.3°C (77.5°F). In Ottawa, the average high-temperature is 25.3°C (77.5°F), and the average low-temperature is 14.3°C (57.7°F). Weather in August »

September, the first month of the autumn, in Ottawa, is still a pleasant month, with average temperature ranging between max 20.4°C (68.7°F) and min 9.6°C (49.3°F). In September, the average high-temperature is 20.4°C (68.7°F), and the average low-temperature is 9.6°C (49.3°F). Weather in September »

October, the same as September, is a cool autumn month in Ottawa, Canada, with average temperature ranging between min 3.3°C (37.9°F) and max 12.7°C (54.9°F). The average high-temperature, in October, is 12.7°C (54.9°F), while the average low-temperature is 3.3°C (37.9°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 high of 5.4°C (41.7°F) and an average low of -2.4°C (27.7°F). In November, the average high-temperature is 5.4°C (41.7°F), and the average low-temperature is -2.4°C (27.7°F). Weather in November »

The first month of the winter, December, is also a subzero cold month in Ottawa, Canada, with average temperature ranging between max -2.3°C (27.9°F) and min -10.1°C (13.8°F). The average high-temperature, is -2.3°C (27.9°F), while the average low-temperature is -10.1°C (13.8°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 are January through May, October through December.

How much does it snow in Ottawa?

Throughout the year, 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 in Ottawa 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 in Ottawa. 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 in Ottawa, Canada, with an average relative humidity of 49.9%.

What is the wettest 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?

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

What is the month with 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, 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?

The month with the most sunshine 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 is December, with an average of 8.8h of daylight.

What is the month with the least sunshine in Ottawa?

December has the least sunshine of the year, 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
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