Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
With December's onset, the average high-temperature in Toronto recedes from November's chilly 7.1°C (44.8°F) to an icy 1.4°C (34.5°F). Night temperatures in December exhibit a subtle decrease, settling at an average of -2.5°C (27.5°F).Humidity
The average relative humidity in December is 81%.Rainfall
In December, in Toronto, the rain falls for 7.7 days. Throughout December, 23mm (0.91") of precipitation is accumulated. Throughout the year, there are 136.8 rainfall days, and 420mm (16.54") of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Toronto. In Toronto, in December, during 9.9 snowfall days, 41mm (1.61") of snow is typically accumulated. Throughout the year, there are 45.6 snowfall days, and 223mm (8.78") of snow is accumulated.Sea temperature
In Toronto, in December, the average water temperature is 5°C (41°F).Note: It is life-risking to swim in 5°C (41°F). Briefly staying in 13°C (55.4°F) waters feels unsettling, and temperatures below 10°C (50°F) might result in cold shock and loss of breath control, hinging on personal endurance.
Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year.On the first day of December in Toronto, sunrise is at 7:31 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 4:50 pm EST.
Sunshine
In Toronto, the average sunshine in December is 3.6h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Toronto. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 1 in December converts into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Frequently asked questions
How cold is December in Toronto?
What is the average humidity in December in Toronto?
How many days does it rain in December in Toronto?
How much does it snow in Toronto in December?
How cold is the water in December in Toronto?
What is the month with the shortest days in Toronto?
What is the average length of the day in December in Toronto?
When are sunrise and sunset in December in Toronto?
How long on average sun shines in December in Toronto?
What are the months with the lowest UV index in Toronto?
How high is the UV index in December in Toronto?
Average temperature in December
Toronto, Canada
- Average high temperature in December: 1.4°C
The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (-2.3°C).
- Average low temperature in December: -2.5°C
The months with the highest average low temperature are July and August (18.4°C).
The coldest month (with the lowest average low temperature) is January (-7°C).
Average pressure in December
Toronto, Canada
- Average pressure in December: 1017.4mbar
The month with the highest atmospheric pressure is March (1018.4mbar).
The month with the lowest atmospheric pressure is June (1013.1mbar).
Average wind speed in December
Toronto, Canada
- Average wind speed in December: 18.8km/h
The windiest month (with the highest average wind speed) is January (19.5km/h).
The calmest month (with the lowest average wind speed) is July (11.7km/h).
Average humidity in December
Toronto, Canada
- Average humidity in December: 81%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are August and September (74%).
Average rainfall in December
Toronto, Canada
- Average rainfall in December: 23mm
The wettest month (with the highest rainfall) is July (53mm).
The driest month (with the least rainfall) is February (19mm).
Average rainfall days in December
Toronto, Canada
- Average rainfall days in December: 7.7 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in December
Toronto, Canada
- Average snowfall in December: 41mm
The month with the highest snowfall is January (57mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Toronto, Canada
- Average snowfall days in December: 9.9 days
The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Toronto, Canada
- Average sea temperature in December: 5°C
The best month for swimming (with the highest average sea temperature) is August (22.3°C).
The coldest month (with the lowest average sea temperature) is March (1.9°C).
Average daylight in December /
Average sunshine in December
Toronto, Canada
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in December
Toronto, Canada
- Average sunshine days in December: 14.3 days
The month with the most sunshine days is March (16.2 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in December
Toronto, Canada
- Average UV index in December: 1
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Toronto, Canada
- Average cloud cover in December: 63
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in December
Toronto, Canada
- Average visibility in December: 9km
The months with the highest visibility are June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, May, November and December (9km).
Toronto, Canada
Weather forecast for your location
2. Allow the app to use your location
