January weather forecast
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

Weather in January

January, the same as December, in Toronto, Canada, is a freezing cold winter month, with average temperature varying between -2.3°C (27.9°F) and -7°C (19.4°F).

Temperature

January is the coldest month, with an average high-temperature of -2.3°C (27.9°F) and an average low-temperature of -7°C (19.4°F).

Humidity

Months with the highest humidity in Toronto are January and February, with an average relative humidity of 83%.

Rainfall

In Toronto, in January, it is raining for 5.9 days, with typically 27mm (1.06") of accumulated precipitation. Throughout the year, in Toronto, 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. January is the month with the most snowfall in Toronto. Snow falls for 11.9 days and accumulates 57mm (2.24") of snow.

Sea temperature

In Toronto, Canada, the average seawater temperature is 2.8°C (37°F).
Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

Daylight

The average length of the day in Toronto is 9.4h.

Sunshine

January has the least sunshine of the year in Toronto, with an average of 3.2h of sunshine.

UV index

Months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV radiation for the average person.
Note: In January, the average maximum UV index of 1 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Toronto?

January is the coldest month, with an average high-temperature of -2.3°C (27.9°F) and an average low-temperature of -7°C (19.4°F).

What are the most humid months in Toronto?

Months with the highest humidity are January and February, with an average relative humidity of 83%.

What is the average humidity in January in Toronto?

The average relative humidity in January is 83%.

How many days does it rain in January in Toronto?

In Toronto, in January, it is raining for 5.9 days, with typically 27mm (1.06") of accumulated precipitation.

When does it snow the most in Toronto?

The month with the most snowfall is January when snow falls for 11.9 days and typically aggregates up to 57mm (2.24") of snow.

How many days does it snow in January in Toronto?

In Toronto, during January, snow falls for 11.9 days and regularly aggregates up to 57mm (2.24") of snow.

How cold is the water in January in Toronto?

In Toronto, Canada, the average seawater temperature in January is 2.8°C (37°F). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

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

In Toronto, the average length of the day in January is 9.4h.

What is the month with the least sunshine in Toronto?

With an average of 3.2h of sunshine, January has the least sunshine of the year in Toronto, Canada.

How many hours of sunshine does Toronto have in January?

In Toronto, the average sunshine in January is 3.2h.

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

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

How high is the UV index in January in Toronto?

The average daily maximum UV index in January is 1. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to the UV radiation.

Average temperature in January
Toronto, Canada

Average temperature in January - Toronto, Canada
  • Average high temperature in January: -2.3°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 January: -7°C

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).

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Average pressure in January
Toronto, Canada

Average pressure in January - Toronto, Canada
  • Average pressure in January: 1017.1mbar

The month with the highest atmospheric pressure is March (1018.4mbar).
The month with the lowest atmospheric pressure is June (1013.1mbar).

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Average wind speed in January
Toronto, Canada

Average wind speed in January - Toronto, Canada
  • Average wind speed in January: 19.5km/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).

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Average humidity in January
Toronto, Canada

Average humidity in January - Toronto, Canada
  • Average humidity in January: 83%

Months with the highest relative humidity are January and February (83%).
Months with the lowest relative humidity are August and September (74%).

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Average rainfall in January
Toronto, Canada

Average rainfall in January - Toronto, Canada
  • Average rainfall in January: 27mm

The wettest month (with the highest rainfall) is July (53mm).
The driest month (with the least rainfall) is February (19mm).

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Average rainfall days in January
Toronto, Canada

Average rainfall days in January - Toronto, Canada
  • Average rainfall days in January: 5.9 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).

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Average snowfall in January
Toronto, Canada

Average snowfall in January - Toronto, Canada
  • Average snowfall in January: 57mm

The month with the highest snowfall is January (57mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days in January
Toronto, Canada

Average snowfall days in January - Toronto, Canada
  • Average snowfall days in January: 11.9 days

The month with the highest number of snowfall days is January (11.9 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in January
Toronto, Canada

Average sea temperature in January - Toronto, Canada
  • Average sea temperature in January: 2.8°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).

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Average daylight in January /
Average sunshine in January
Toronto, Canada

Average daylight in January / Average sunshine in January - Toronto, Canada
  • Average daylight in January: 9.4h

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

  • Average sunshine in January: 3.2h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is January (Average sunshine: 3.2h).

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Average sunshine days in January
Toronto, Canada

Average sunshine days in January - Toronto, Canada
  • Average sunshine days in January: 13.6 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).

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Average UV index in January
Toronto, Canada

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

Months with the highest UV index are July and August (UV index 6).
Months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in January
Toronto, Canada

Average cloud cover in January - Toronto, Canada
  • Average cloud cover in January: 67

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 26).

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Average visibility in January
Toronto, Canada

Average visibility in January - Toronto, Canada
  • Average visibility in January: 9km

Months with the highest visibility are June, July, August, September and October (10km).
Months with the lowest visibility are January, February, March, April, May, November and December (9km).

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