Toronto
Canada
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Toronto, Canada

Colorfully lit night city of Toronto, Canada, with a view of the Nathan Phillips Square, and a large Toronto sign
Colorfully lit night city of Toronto, Canada, with a view of the Nathan Phillips Square, and a large Toronto sign
December is the driest month in Toronto, with approximately eleven days of rainfall and very low precipitation of 20.3mm (0.8") on average.
Winter weather becomes alive as the temperature falls into the range of -3°C (26.6°F) and 1°C (33.8°F). The blizzard is more intense and has higher gusts making most days and nights icy and frigid.
There are approximately nine snowfall days in December with a fairly high accumulation of 241.3mm (9.5") of snow. This factor reduces most activities indoors except for skating and skiing for the fans of the cold.
It remains vital to dress warmly, whether indoors or outdoors, as the temperatures keep dropping as weeks go by. Occasionally, the weather lifts slightly but falls back to freeze city of Toronto.

What is the temperature in December in Toronto?

In Toronto, Canada, in December, the average high-temperature is 2.1°C (35.8°F), and the average low-temperature is -3.1°C (26.4°F).

How many days does it rain in December in Toronto?

In Toronto, during December, the rain falls for 7 days and regularly aggregates up to 38.2mm (1.5") of precipitation.

How much does it snow in Toronto in December?

In Toronto, in December, snow falls for 8.4 days, with typically accumulated 241mm (9.5") of snow.

What is the sea water temperature in December in Toronto?

In Toronto, the average seawater temperature in December is 5°C (41°F). Swimming in 5°C (41°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

What is the month with the shortest days in Toronto?

December has the shortest days of the year in Toronto, Canada, with an average of 9h of daylight.

What is the average length of the day in December in Toronto?

In Toronto, Canada, the average length of the day in December is 9h.

What is the month with the least sunshine in Toronto?

With an average of 2.5h of sunshine, December has the least sunshine of the year in Toronto.

How long on average sun shines in December in Toronto?

The average sunshine in December in Toronto is 2.5h.

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

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

What is the UV index reading in December in Toronto?

In Toronto, Canada, the average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to the UV radiation.
Average temperature in December - Toronto, Canada
  • Average high temperature in December: 2.1°C

The warmest month (with the highest average high temperature) is July (26.6°C).
The month with the lowest average high temperature is January (-0.7°C).

  • Average low temperature in December: -3.1°C

The month with the highest average low temperature is July (18°C).
The coldest month (with the lowest average low temperature) is January (-6.7°C).

Average rainfall in December - Toronto, Canada
  • Average rainfall in December: 38.2mm

The wettest month (with the highest rainfall) is September (84.7mm).
The driest month (with the lowest rainfall) is January (29.1mm).

Average rainfall days in December - Toronto, Canada
  • Average rainfall days in December: 7 days

The month with the highest number of rainy days is May (12.7 days).
The month with the lowest number of rainy days is February (4.8 days).

Average snowfall in December - Toronto, Canada
  • Average snowfall in December: 241mm

The month with the highest snowfall is January (372mm).
Months with the lowest snowfall are May, June, July, August and September (0mm).

Average snowfall days in December - Toronto, Canada
  • Average snowfall days in December: 8.4 days

The month with the highest number of snowfall days is January (12 days).
Months with the lowest number of snowfall days are May, 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

The month with the longest days is June (Average daylight: 15.4h).
The month with shortest days is December (Average daylight: 9h).

  • Average sunshine in December: 2.5h

The month with most sunshine is July (Average sunshine: 9h).
The month with least sunshine is December (Average sunshine: 2.5h).

Average UV index in December - Toronto, Canada
  • Average UV index in December: 1

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January and December (UV index 1).