December weather forecastLewisporte, Canada

December

Weather in December

The first month of the winter, December, is also a subzero cold month in Lewisporte, Canada, with an average temperature varying between -0.4°C (31.3°F) and -5°C (23°F).

Temperature

December implies a gentle temperature shift, with average high-temperatures reducing from November's cold 5°C (41°F) to a subzero cold -0.4°C (31.3°F). A modest decline from daytime high temperatures in Lewisporte is noticed in December, marking the average low at a still freezing cold -5°C (23°F).

Humidity

In December, the average relative humidity in Lewisporte is 87%.

Rainfall

In Lewisporte, Canada, in December, it is raining for 9.5 days, with typically 68mm (2.68") of accumulated precipitation. In Lewisporte, during the entire year, the rain falls for 154.8 days and collects up to 785mm (30.91") of precipitation.

Snowfall

January through June, October through December are months with snowfall. In December, in Lewisporte, it is snowing for 17.6 days. Throughout December, 250mm (9.84") of snow is accumulated. Throughout the year, in Lewisporte, there are 106.5 snowfall days, and 1460mm (57.48") of snow is accumulated.

Sea temperature

In Lewisporte, the average seawater temperature in December is 1.4°C (34.5°F).
Note: In the water-based sport of swimming, this state is life-threatening and exceedingly dangerous. The freezing water causes severe discomfort, leading to rapid hyperventilation. A specialized swimsuit is compulsory to avert thermal damage.

Daylight

December has the shortest days of the year in Lewisporte, with an average of 8h and 18min of daylight.
On the first day of the month, sunrise is at 7:44 am and sunset at 4:14 pm. On the last day of December, sunrise is at 8:05 am and sunset at 4:21 pm NST.

Sunshine

In December, the average sunshine in Lewisporte is 2.8h.

UV index

January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Lewisporte, Canada. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.

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

Frequently asked questions

In Lewisporte, in December, the average high-temperature is -0.4°C (31.3°F), and the average low-temperature is -5°C (23°F).

In Lewisporte, Canada, the average relative humidity in December is 87%.

In December, the rain falls for 9.5 days. Throughout December, 68mm (2.68") of precipitation is accumulated.

In Lewisporte, Canada, in December, snow falls for 17.6 days, with typically accumulated 250mm (9.84") of snow.

In December, the average sea temperature is 1.4°C (34.5°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.

December has the shortest days of the year in Lewisporte, with an average of 8h and 18min of daylight.

In Lewisporte, Canada, the average day length in December is 8h and 17min.

In December, on the first day of the month, sunrise is at 7:44 am and sunset at 4:14 pm. On the last day of the month, in Lewisporte, Canada, sunrise is at 8:05 am and sunset at 4:21 pm NST.

In Lewisporte, Canada, the average sunshine duration in December is 2.8h.

The months with the lowest UV index in Lewisporte, Canada, are January through March, November and December, with an average maximum UV index of 1.

In Lewisporte, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a low health threat from unsafe 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

5°C

-0.4°C

-2.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

16.8km/h

16.7km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

11.1

17.6

19.6

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

9.1

8.6

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Lewisporte, Canada

Average high temperature in December: -0.4°C

The warmest month (with the highest average high temperature) is July (21.9°C).
The months with the lowest average high temperature are January and February (-2.8°C).

Average low temperature in December: -5°C

The month with the highest average low temperature is August (11.9°C).
The coldest month (with the lowest average low temperature) is February (-10.4°C).

Average pressure in December
Lewisporte, Canada

Average pressure in December: 1010.6mbar

The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is February (1007.7mbar).

Average wind speed in December
Lewisporte, Canada

Average wind speed in December: 15.5km/h

The windiest month (with the highest average wind speed) is February (16.1km/h).
The calmest month (with the lowest average wind speed) is August (12.4km/h).

Average humidity in December
Lewisporte, Canada

Average humidity in December: 87%

The months with the highest relative humidity are January and March (92%).
The months with the lowest relative humidity are June and July (79%).

Average rainfall in December
Lewisporte, Canada

Average rainfall in December: 68mm

The wettest month (with the highest rainfall) is November (87mm).
The driest month (with the least rainfall) is April (52mm).

Average rainfall days in December
Lewisporte, Canada

Average rainfall days in December: 9.5 days

The month with the highest number of rainy days is August (18.7 days).
The month with the least rainy days is February (4.3 days).

Average snowfall in December
Lewisporte, Canada

Average snowfall in December: 250mm

The month with the highest snowfall is January (262mm).
The months with the least snowfall are July, August and September (0mm).

Average snowfall days in December
Lewisporte, Canada

Average snowfall days in December: 17.6 days

The month with the highest number of snowfall days is January (19.6 days).
The months with the least snowfall days are July and August (0 days).

Average sea temperature in December
Lewisporte, Canada

Average sea temperature in December: 1.4°C

The best month for swimming (with the highest average sea temperature) is August (13.9°C).
The coldest month (with the lowest average sea temperature) is March (-1.3°C).

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

Average daylight in December: 8h and 18min

The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).

Average sunshine in December: 2h and 48min

The months with the most sunshine are July and August (Average sunshine: 7h and 12min).
The month with the least sunshine is February (Average sunshine: 2h and 30min).

Average sunshine days in December
Lewisporte, Canada

Average sunshine days in December: 8.6 days

The month with the most sunshine days is September (11.3 days).
The month with the least sunshine days is March (7.7 days).

Average UV index in December
Lewisporte, Canada

Average UV index in December: 1

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