December weather forecast and climate
Windsor, Canada

Weather in December

December, the first month of the winter, in Windsor, is still a cold month, with average temperature ranging between max 1.8°C (35.2°F) and min -2.5°C (27.5°F).

Temperature

In Windsor, the average high-temperature drops, from a frosty 7.6°C (45.7°F) in November, to a wintry 1.8°C (35.2°F). In December, the average low-temperature is -2.5°C (27.5°F).

Humidity

In Windsor, the average relative humidity is 81%.

Rainfall

In Windsor, Canada, in December, it is raining for 8.5 days, with typically 32mm (1.26") of accumulated precipitation. Throughout the year, in Windsor, there are 152.1 rainfall days, and 595mm (23.43") of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Windsor. In Windsor, during December, snow falls for 12.4 days and regularly aggregates up to 58mm (2.28") of snow. Throughout the year, there are 54.3 snowfall days, and 377mm (14.84") of snow is accumulated.

Sea temperature

In December, the average sea temperature is 3.4°C (38.1°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 month with the shortest days in Windsor is December, with an average of 9.1h of daylight.

Sunshine

The average sunshine in Windsor is 3.6h.

UV index

December is the month with the lowest UV index in Windsor, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 1 in December interpret into the following advice:
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. 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 average humidity in December in Windsor?

In Windsor, Canada, the average relative humidity in December is 81%.

How many days does it rain in December in Windsor?

In Windsor, in December, during 8.5 rainfall days, 32mm (1.26") of precipitation is typically accumulated.

How much does it snow in Windsor in December?

In Windsor, Canada, in December, during 12.4 snowfall days, 58mm (2.28") of snow is typically accumulated.

What is the sea temperature in December in Windsor?

In Windsor, in December, the average water temperature is 3.4°C (38.1°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 month with the shortest days in Windsor?

December has the shortest days of the year, with an average of 9.1h of daylight.

How many hours of daylight does Windsor have in December?

In December, the average length of the day in Windsor is 9.1h.

How long on average sun shines in December in Windsor?

The average sunshine in December in Windsor is 3.6h.

What is the month with the lowest UV index in Windsor?

With an average maximum UV index of 1, December is the month with the lowest UV index.

What is the UV index reading in December in Windsor?

In December, the average daily maximum UV index in Windsor is 1. A UV Index of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV radiation.

Average temperature in December
Windsor, Canada

Average temperature in December - Windsor, Canada
  • Average high temperature in December: 1.8°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 (-1.5°C).

  • Average low temperature in December: -2.5°C

The month with the highest average low temperature is July (18.8°C).
The coldest month (with the lowest average low temperature) is January (-6.9°C).

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Average pressure in December
Windsor, Canada

Average pressure in December - Windsor, Canada
  • Average pressure in December: 1018.6mbar

The month with the highest atmospheric pressure is November (1019.2mbar).
The month with the lowest atmospheric pressure is June (1013.5mbar).

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Average wind speed in December
Windsor, Canada

Average wind speed in December - Windsor, Canada
  • Average wind speed in December: 16.5km/h

The windiest month (with the highest average wind speed) is January (16.9km/h).
The calmest month (with the lowest average wind speed) is July (10.9km/h).

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Average humidity in December
Windsor, Canada

Average humidity in December - Windsor, Canada
  • Average humidity in December: 81%

The month with the highest relative humidity is February (85%).
Months with the lowest relative humidity are July and August (73%).

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Average rainfall in December
Windsor, Canada

Average rainfall in December - Windsor, Canada
  • Average rainfall in December: 32mm

The wettest month (with the highest rainfall) is May (73mm).
The driest month (with the least rainfall) is February (31mm).

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Average rainfall days in December
Windsor, Canada

Average rainfall days in December - Windsor, Canada
  • Average rainfall days in December: 8.5 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (7.1 days).

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Average snowfall in December
Windsor, Canada

Average snowfall in December - Windsor, Canada
  • Average snowfall in December: 58mm

The month with the highest snowfall is January (109mm).
Months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in December
Windsor, Canada

Average snowfall days in December - Windsor, Canada
  • Average snowfall days in December: 12.4 days

The month with the highest number of snowfall days is January (14.5 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in December
Windsor, Canada

Average sea temperature in December - Windsor, Canada
  • Average sea temperature in December: 3.4°C

The best month for swimming (with the highest average sea temperature) is August (24.1°C).
The coldest month (with the lowest average sea temperature) is February (0.4°C).

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

Average daylight in December / Average sunshine in December - Windsor, Canada
  • Average daylight in December: 9.1h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in December: 3.6h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is January (Average sunshine: 3.2h).

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Average sunshine days in December
Windsor, Canada

Average sunshine days in December - Windsor, Canada
  • Average sunshine days in December: 13 days

The month with the most sunshine days is November (15.2 days).
The month with the least sunshine days is February (10.7 days).

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Average UV index in December
Windsor, Canada

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

Months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
Windsor, Canada

Average cloud cover in December - Windsor, Canada
  • Average cloud cover in December: 62

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in December
Windsor, Canada

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

The month with the highest visibility is October (10km).
The month with the lowest visibility is January (8km).

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