London
United Kingdom
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
London, United Kingdom

The large Thames river in London overlooking the Westminster Palace and the Big Ben clock tower in London, United Kingdom, on a cloudy evening after sunset
The large Thames river in London overlooking the Westminster Palace and the Big Ben clock tower in London, United Kingdom, on a cloudy evening after sunset
December starts the winter season in London with the average temperatures in the 2.8°C (37°F) to 8.3°C (46.9°F) range.
Rainfall is to the tune of 53.3mm (2.1"). Snowflakes appear for 2 to 3 days in December, but the snowfall rarely goes up to 50.8mm (2"). December has the shortest days with 8 hours of daylight and just 1.7 hours of sunshine. It is rare to experience the sun shining brightly in December, as the cloud cover is almost unbreakable.
London is never short of visitors, even during the gloomy winter months. Christmas is wet and mostly overcast, but the festive spirit brightens the days.

What is the temperature in December in London?

The average high-temperature, in December, in London, United Kingdom, is 8.3°C (46.9°F), while the average low-temperature is 2.7°C (36.9°F).

How much does it rain in London in December?

In December, in London, United Kingdom, the rain falls for 10.2 days. Throughout December, 55.2mm (2.2") of precipitation is accumulated.

What is the month with the shortest days in London?

With an average of 7.9h of daylight, December has the shortest days of the year in London, United Kingdom.

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

In December, the average length of the day in London, United Kingdom, is 7.9h.

What is the month with the least sunshine in London?

December has the least sunshine of the year in London, with an average of 1.7h of sunshine.

How long on average sun shines in December in London?

In December, the average sunshine is 1.7h.

When is the lowest UV index in London?

With an average maximum UV index of 0, December is the month with the lowest UV index in London.

How high is the UV index in December in London?

The average daily maximum UV index in December in London is 0. A UV Index of 2, and less, symbolizes a minimal hazard to health from the exposure to the Sun's UV radiation.
Average temperature in December - London, United Kingdom
  • Average high temperature in December: 8.3°C

The warmest month (with the highest average high temperature) is July (23.5°C).
The month with the lowest average high temperature is January (8.1°C).

  • Average low temperature in December: 2.7°C

The month with the highest average low temperature is July (13.9°C).
The coldest month (with the lowest average low temperature) is February (2.1°C).

Average rainfall in December - London, United Kingdom
  • Average rainfall in December: 55.2mm

The wettest month (with the highest rainfall) is October (68.5mm).
The driest month (with the lowest rainfall) is February (40.9mm).

Average rainfall days in December - London, United Kingdom
  • Average rainfall days in December: 10.2 days

The month with the highest number of rainy days is January (11.1 days).
The month with the lowest number of rainy days is August (7.5 days).

Average daylight in December / Average sunshine in December - London, United Kingdom
  • Average daylight in December: 7.9h

The month with the longest days is June (Average daylight: 16.5h).
The month with shortest days is December (Average daylight: 7.9h).

  • Average sunshine in December: 1.7h

Months with most sunshine are June and July (Average sunshine: 6.8h).
The month with least sunshine is December (Average sunshine: 1.7h).

Average UV index in December - London, United Kingdom
  • Average UV index in December: 0

Months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 0).