December weather forecast and climate
Lewisporte, Canada

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

Temperature

In Lewisporte, Canada, the average high-temperature in December decreases, from a wintry 5°C (41°F) in November, to a subzero cold -0.4°C (31.3°F). The average low-temperature, in December, is -5°C (23°F).

Humidity

In Lewisporte, the average relative humidity is 87%.

Rainfall

In Lewisporte, during December, the rain falls for 9.5 days and regularly aggregates up to 68mm (2.68") of precipitation. Throughout the year, there are 154.8 rainfall days, and 785mm (30.91") of precipitation is accumulated.

Snowfall

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

Sea temperature

In Lewisporte, the average seawater temperature is 1.4°C (34.5°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

December has the shortest days of the year in Lewisporte, Canada, with an average of 8.3h of daylight.

Sunshine

The average sunshine in December is 2.8h.

UV index

Months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
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.

What is the temperature in December 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).

What is the average humidity in December in Lewisporte?

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

How many days does it rain in December in Lewisporte?

In Lewisporte, Canada, in December, during 9.5 rainfall days, 68mm (2.68") of precipitation is typically accumulated.

How much does it snow in Lewisporte in December?

In Lewisporte, Canada, during December, snow falls for 17.6 days and regularly aggregates up to 250mm (9.84") of snow.

What is the sea temperature in December in Lewisporte?

In Lewisporte, in December, the average water temperature is 1.4°C (34.5°F). For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

What is the month with the shortest days in Lewisporte?

With an average of 8.3h of daylight, December has the shortest days of the year in Lewisporte, Canada.

What is the average length of the day in December in Lewisporte?

In Lewisporte, Canada, the average length of the day in December is 8.3h.

How many hours of sunshine does Lewisporte have in December?

The average sunshine in December in Lewisporte, Canada, is 2.8h.

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

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

What is the UV index intensity in December in Lewisporte?

In December, the average daily maximum UV index in Lewisporte 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 - Lewisporte, Canada
  • Average high temperature in December: -0.4°C

The warmest month (with the highest average high temperature) is July (21.9°C).
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 humidity in December - Lewisporte, Canada
  • Average humidity in December: 87%

Months with the highest relative humidity are January and March (92%).
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).
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).
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: 8.3h

The month with the longest days is June (Average daylight: 16.2h).
The month with the shortest days is December (Average daylight: 8.3h).

  • Average sunshine in December: 2.8h

Months with the most sunshine are July and August (Average sunshine: 7.2h).
The month with the least sunshine is February (Average sunshine: 2.5h).

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).
Months with the lowest UV index are January, February, March, November and December (UV index 1).