December weather forecast and climate
Mississauga, Canada

Weather in December

The first month of the winter, December, is still a cold month in Mississauga, Canada, with average temperature ranging between max 2.4°C (36.3°F) and min -1.5°C (29.3°F).

Temperature

In Mississauga, the average high-temperature in December decreases, from a frosty 7.8°C (46°F) in November, to a cold 2.4°C (36.3°F). In December, the average low-temperature is -1.5°C (29.3°F).

Humidity

In Mississauga, the average relative humidity is 80%.

Rainfall

In Mississauga, during 11.8 rainfall days, 56mm (2.2") of precipitation is typically accumulated. Throughout the year, in Mississauga, there are 177.2 rainfall days, and 786mm (30.94") of precipitation is accumulated.

Snowfall

Months with snowfall in Mississauga are January through May, October through December. In December, in Mississauga, it is snowing for 12.5 days. Throughout December, 76mm (2.99") of snow is accumulated. In Mississauga, during the entire year, snow falls for 58.5 days, and aggregates up to 403mm (15.87") of snow.

Sea temperature

In December, the average sea temperature in Mississauga, Canada, is 4.9°C (40.8°F).
Note: 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.

Daylight

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

Sunshine

In December, the average sunshine in Mississauga is 3.2h.

UV index

Months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 1 in December transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. 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 temperature in December in Mississauga?

The average high-temperature, in December, in Mississauga, is 2.4°C (36.3°F), while the average low-temperature is -1.5°C (29.3°F).

What is the average humidity in December in Mississauga?

In Mississauga, Canada, the average relative humidity in December is 80%.

How many days does it rain in December in Mississauga?

In Mississauga, Canada, during December, the rain falls for 11.8 days and regularly aggregates up to 56mm (2.2") of precipitation.

How much does it snow in Mississauga in December?

In Mississauga, Canada, in December, snow falls for 12.5 days, with typically accumulated 76mm (2.99") of snow.

What is the sea temperature in December in Mississauga?

In December, the average sea temperature in Mississauga, Canada, is 4.9°C (40.8°F). For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

What is the month with the shortest days in Mississauga?

The month with the shortest days in Mississauga, Canada, is December, with an average of 9h of daylight.

How many hours of daylight does Mississauga have in December?

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

How many hours of sunshine does Mississauga have in December?

In December, the average sunshine in Mississauga, Canada, is 3.2h.

When is the lowest UV index in Mississauga?

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

What is the UV index intensity in December in Mississauga?

In December, the average daily maximum UV index is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV radiation.

Average temperature in December
Mississauga, Canada

Average temperature in December - Mississauga, Canada
  • Average high temperature in December: 2.4°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 (-1.4°C).

  • Average low temperature in December: -1.5°C

The month with the highest average low temperature is July (18.6°C).
The coldest month (with the lowest average low temperature) is January (-6.1°C).

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Average pressure in December
Mississauga, Canada

Average pressure in December - Mississauga, Canada
  • Average pressure in December: 1017.7mbar

The month with the highest atmospheric pressure is November (1018.5mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).

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Average wind speed in December
Mississauga, Canada

Average wind speed in December - Mississauga, Canada
  • Average wind speed in December: 19.7km/h

The windiest month (with the highest average wind speed) is January (21km/h).
The calmest month (with the lowest average wind speed) is July (12.1km/h).

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Average humidity in December
Mississauga, Canada

Average humidity in December - Mississauga, Canada
  • Average humidity in December: 80%

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

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Average rainfall in December
Mississauga, Canada

Average rainfall in December - Mississauga, Canada
  • Average rainfall in December: 56mm

The wettest month (with the highest rainfall) is July (80mm).
The driest months (with the least rainfall) are September and November (55mm).

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Average rainfall days in December
Mississauga, Canada

Average rainfall days in December - Mississauga, Canada
  • Average rainfall days in December: 11.8 days

The month with the highest number of rainy days is October (18.9 days).
The month with the least rainy days is February (8.8 days).

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Average snowfall in December
Mississauga, Canada

Average snowfall in December - Mississauga, Canada
  • Average snowfall in December: 76mm

The month with the highest snowfall is February (127mm).
Months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in December
Mississauga, Canada

Average snowfall days in December - Mississauga, Canada
  • Average snowfall days in December: 12.5 days

The month with the highest number of snowfall days is February (14.1 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in December
Mississauga, Canada

Average sea temperature in December - Mississauga, Canada
  • Average sea temperature in December: 4.9°C

The best month for swimming (with the highest average sea temperature) is August (22.3°C).
The coldest months (with the lowest average sea temperature) are February and March (1.4°C).

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Average daylight in December /
Average sunshine in December
Mississauga, Canada

Average daylight in December / Average sunshine in December - Mississauga, Canada
  • Average daylight in December: 9h

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 December: 3.2h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is January (Average sunshine: 2.8h).

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Average sunshine days in December
Mississauga, Canada

Average sunshine days in December - Mississauga, Canada
  • Average sunshine days in December: 8.8 days

The month with the most sunshine days is September (13 days).
The month with the least sunshine days is January (7.5 days).

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Average UV index in December
Mississauga, Canada

Average UV index in December - Mississauga, Canada
  • Average UV index in December: 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 December
Mississauga, Canada

Average cloud cover in December - Mississauga, Canada
  • Average cloud cover in December: 66

The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in December
Mississauga, Canada

Average visibility in December - Mississauga, Canada
  • Average visibility in December: 9km

Months with the highest visibility are June, July, August and September (10km).
Months with the lowest visibility are January and February (8km).

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