December weather forecastThessalon, Canada

December

Weather in December

December, the first month of the winter in Thessalon, is also a subzero cold month, with an average temperature varying between -3.1°C (26.4°F) and -8.8°C (16.2°F).

Temperature

With December's onset, the weather shows a temperature decrease, transitioning from an icy 2.9°C (37.2°F) in November to a subzero cold -3.1°C (26.4°F). Thessalon temperatures generally rest at a low of -8.8°C (16.2°F) during the December nights.

Humidity

The average relative humidity in December is 90%.

Rainfall

In Thessalon, in December, it is raining for 7 days, with typically 44mm (1.73") of accumulated precipitation. In Thessalon, during the entire year, the rain falls for 126.3 days and collects up to 586mm (23.07") of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Thessalon, during December, snow falls for 19.6 days and regularly aggregates up to 230mm (9.06") of snow. Throughout the year, in Thessalon, Canada, there are 103.4 snowfall days, and 1240mm (48.82") of snow is accumulated.

Sea temperature

In Thessalon, Canada, the average seawater temperature in December is 4.3°C (39.7°F).
Note: When swimming, this state is excessively cold, posing a lethal risk. Absent the protection of insulated waterproof wear, hypothermia is likely to occur immediately.

Daylight

December has the shortest days of the year, with an average of 8h and 42min of daylight.
On the first day of December, sunrise is at 7:57 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 8:16 am and sunset at 4:58 pm EST.

Sunshine

In December, the average sunshine in Thessalon, Canada, is 2.4h.

UV index

The months with the lowest UV index in Thessalon are January, February, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.
Note: An average UV index of 1 in December transforms into this advice:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. It's recommended to limit sun exposure when its radiation is at its peak during midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.

Updated: Feb 5, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in December, in Thessalon, records -3.1°C (26.4°F), while the low-temperature is -8.8°C (16.2°F).

In December, the average relative humidity in Thessalon, Canada, is 90%.

In Thessalon, Canada, in December, it is raining for 7 days, with typically 44mm (1.73") of accumulated precipitation.

In December, in Thessalon, Canada, it is snowing for 19.6 days. Throughout December, 230mm (9.06") of snow is accumulated.

In Thessalon, Canada, in December, the average water temperature is 4.3°C (39.7°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.

The month with the shortest days is December, with an average of 8h and 42min of daylight.

In Thessalon, the average day length in December is 8h and 41min.

On the first day of December in Thessalon, sunrise is at 7:57 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 8:16 am and sunset at 4:58 pm EST.

In Thessalon, Canada, the average sunshine duration in December is 2.4h.

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Thessalon.

The average daily maximum UV index in December in Thessalon, Canada, is 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

2.9°C

-3.1°C

-6.7°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

12.4km/h

12.2km/h

12.1km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

13.5

19.6

22.1

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

11.1

9.6

9.3

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Thessalon, Canada

Average high temperature in December: -3.1°C

The warmest month (with the highest average high temperature) is July (23.3°C).
The month with the lowest average high temperature is January (-6.7°C).

Average low temperature in December: -8.8°C

The month with the highest average low temperature is August (11.6°C).
The coldest months (with the lowest average low temperature) are January and February (-14.1°C).

Average pressure in December
Thessalon, Canada

Average pressure in December: 1016.7mbar

The month with the highest atmospheric pressure is March (1018.9mbar).
The month with the lowest atmospheric pressure is June (1013.2mbar).

Average wind speed in December
Thessalon, Canada

Average wind speed in December: 11.3km/h

The windiest month (with the highest average wind speed) is April (12.1km/h).
The calmest month (with the lowest average wind speed) is August (9.7km/h).

Average humidity in December
Thessalon, Canada

Average humidity in December: 90%

The month with the highest relative humidity is February (93%).
The month with the lowest relative humidity is May (72%).

Average rainfall in December
Thessalon, Canada

Average rainfall in December: 44mm

The wettest month (with the highest rainfall) is October (84mm).
The driest month (with the least rainfall) is January (34mm).

Average rainfall days in December
Thessalon, Canada

Average rainfall days in December: 7 days

The month with the highest number of rainy days is October (15.5 days).
The month with the least rainy days is February (3.6 days).

Average snowfall in December
Thessalon, Canada

Average snowfall in December: 230mm

The month with the highest snowfall is January (240mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in December
Thessalon, Canada

Average snowfall days in December: 19.6 days

The month with the highest number of snowfall days is January (22.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in December
Thessalon, Canada

Average sea temperature in December: 4.3°C

The best month for swimming (with the highest average sea temperature) is August (19.3°C).
The coldest months (with the lowest average sea temperature) are February and March (0.8°C).

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

Average daylight in December: 8h and 42min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

Average sunshine in December: 2h and 24min

The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 6min).

Average sunshine days in December
Thessalon, Canada

Average sunshine days in December: 9.6 days

The month with the most sunshine days is July (16.2 days).
The month with the least sunshine days is January (9.3 days).

Average UV index in December
Thessalon, Canada

Average UV index in December: 1

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).