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CanadaThe climate of Ottawa
The current climate in Ottawa features temperatures ranging from a high of 26°C to a low of -9°C throughout the year. The average yearly temperature is around 11°C. At night, temperatures in the colder months average around -18°C and in the warmer months around 15°C.
Average temperatures and precipitation
This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Ottawa, Canada.
Temperature records
The highest temperature recorded in Ottawa in recent years was 36°C in July 2020. The lowest daytime temperature recorded was -36°C in January 2014.
Precipitation and snowfall
On average, Ottawa gets 1396 mm of precipitation each year. Of this, about 239 cm is snowfall. For comparison, New York gets 1142 mm of precipitation each year.
Curious about the weather in other parts of Canada? Check out the climate and weather for spots like Vancouver, Toronto, Niagara Falls, or explore other destinations in Canada.
Best time to visit Ottawa?
The best time to visit Ottawa for mild to warm weather is May and September. You might get some rain, but the temperatures are just right to explore Ottawa.
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Climate Table of Ottawa
The climate table of Ottawa shows the average temperatures, rainfall, snow, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | -9 | -4 | -1 | 10 | 19 | 23 | 26 | 26 | 19 | 12 | 4 | -3 |
| Temp. min (°C) | -17 | -13 | -11 | 0 | 8 | 12 | 16 | 16 | 9 | 3 | -3 | -10 |
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| Precipitation (mm) | 82 | 180 | 86 | 98 | 62 | 167 | 172 | 196 | 78 | 76 | 95 | 104 |
| Snow (cm) | 52 | 68 | 44 | 9,6 | 0,8 | 0 | 0 | 0 | 0,3 | 3,8 | 25 | 36 |
| UV Index | 2 | 4 | 5 | 6 | 7 | 7 | 8 | 7 | 5 | 4 | 3 | 2 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
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Temperature charts
These charts display the average temperatures in Ottawa, Canada. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Ottawa
Yearly Temperature in Ottawa
Precipitation charts
These charts show the average amount of precipitation in Ottawa, Canada. Precipitation is always measured as water, even when it falls as snow or hail. The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Average Precipitation per Month in Ottawa
Total Yearly Precipitation in Ottawa
Average Snowfall per Month in Ottawa
Total Yearly Snowfall in Ottawa
UV index chart
This chart shows the average UV index per month in Ottawa, Canada. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Ottawa
Weather experiences in Ottawa
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Average weather in Ottawa by month
Click on a month below to see detailed weather info for Ottawa. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.