December weather forecastLondon, Canada
December
Weather in December
December welcomes the cold embrace of winter once again, with a high temperature average of only 0.7°C (33.3°F). Snowflakes return to London's weather scene, covering the city in a layer of winter's blanket. The city settles into a quieter rhythm, the frenzied pace of summer and fall replaced by the slow, steady beat of winter. Houses sparkle with festive lights that contrast brightly against the night's darkness. The weather in December reflects a serene ending to the year, a time of quiet and reflection.Temperature
December brings a drop in London's average high-temperature, falling from a frosty 6.5°C (43.7°F) in November to a wintry 0.7°C (33.3°F). A mean low-temperature of -3.8°C (25.2°F) is anticipated during the month of December, a slight step down from the daytime high.Humidity
The average relative humidity in December is 85%.Rainfall
In London, Canada, in December, during 8 rainfall days, 23mm (0.91") of precipitation is typically accumulated. In London, during the entire year, the rain falls for 128.1 days and collects up to 346mm (13.62") of precipitation.Snowfall
Months with snowfall are January through May, October through December. In London, during December, snow falls for 14.4 days and regularly aggregates up to 51mm (2.01") of snow. In London, during the entire year, snow falls for 68.4 days and aggregates up to 277mm (10.91") of snow.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of December in London, sunrise is at 7:37 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:56 am and sunset at 5:00 pm EST.
Sunshine
The average sunshine in December is 2.7h.UV index
January, February and December, with an average maximum UV index of 1, are months with the lowest UV index in London. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 1 during December morphs into the following directions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
London, Canada
- Average high temperature in December: 0.7°C
The warmest month (with the highest average high temperature) is July (25.5°C).
The month with the lowest average high temperature is January (-2.8°C).
- Average low temperature in December: -3.8°C
The month with the highest average low temperature is July (15.4°C).
The coldest months (with the lowest average low temperature) are January and February (-8.2°C).
Average pressure in December
London, Canada
- Average pressure in December: 1017.8mbar
The month with the highest atmospheric pressure is March (1018.7mbar).
The month with the lowest atmospheric pressure is June (1013.4mbar).
Average wind speed in December
London, Canada
- Average wind speed in December: 17.1km/h
The windiest month (with the highest average wind speed) is January (17.9km/h).
The calmest month (with the lowest average wind speed) is July (10.4km/h).
Average humidity in December
London, Canada
- Average humidity in December: 85%
The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are April and May (75%).
Average rainfall in December
London, Canada
- Average rainfall in December: 23mm
The wettest month (with the highest rainfall) is July (45mm).
The driest month (with the least rainfall) is March (20mm).
Average rainfall days in December
London, Canada
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is May (14.1 days).
The months with the least rainy days are January and February (5.7 days).
Average snowfall in December
London, Canada
- Average snowfall in December: 51mm
The month with the highest snowfall is January (71mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
London, Canada
- Average snowfall days in December: 14.4 days
The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
London, Canada
- Average daylight in December: 9h and 6min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 2h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in December
London, Canada
- Average sunshine days in December: 10.6 days
The month with the most sunshine days is September (16.1 days).
The month with the least sunshine days is January (9.3 days).
Average UV index in December
London, Canada
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
London, Canada
- Average cloud cover in December: 72
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in December
London, Canada
- Average visibility in December: 9km
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January and February (8km).
