December weather - Winter 2023 - London, United Kingdom

Weather in December
Frequently asked questions
Average temperature in December
Average pressure in December
Average wind speed in December
Average humidity in December
Average rainfall in December
Average rainfall days in December
Average snowfall in December
Average snowfall days in December
Average daylight in December
Average sunshine in December
Average sunshine days in December
Average UV index in December
Average cloud cover in December
Average visibility in December

The large Thames river overlooking the Westminster Palace and the Big Ben clock tower in London, United Kingdom

Weather in December

December brings the full onset of winter into London. From November, it's noticeably colder with shorter daylight hours. Compared to what's to come in January, December bears similar weather characteristics but with marginally increased temperatures. Amid the often chilly weather, December remains a festive month welcoming millions of tourists for end-of-year celebrations. Despite winter’s grip, an average visibility of 9km is maintained, allowing for clear sightseeing experiences.

Temperature

London experiences a subtle adjustment in high-temperatures to a frosty 7.8°C with the onset of December, maintaining near parity with November's 10.4°C. London maintains a near steady average temperature of 3.5°C during the nights of December, demonstrating little drop from daytime highs.

Humidity

With an average relative humidity of 88%, December is the most humid month in London.

Rainfall

In London, in December, it is raining for 11.1 days, with typically 37mm of accumulated precipitation. Throughout the year, there are 151.7 rainfall days, and 370mm of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall in London. In December, it is snowing for 1.2 days. Throughout December, 9mm of snow is accumulated. Throughout the year, there are 7.7 snowfall days, and 50mm of snow is accumulated.

Daylight

With an average of 7h and 54min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:43 am and sunset at 3:55 pm. On the last day of the month, sunrise is at 8:06 am and sunset at 4:00 pm GMT.

Sunshine

The average sunshine in December in London is 4.2h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. To guard against the harmful effects of the Sun, minimize exposure during midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.

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FAQ

What is the temperature in December in London?

The high-temperature in London, United Kingdom, during December is 7.8°C and the low-temperature is 3.5°C.

What is the most humid month in London?

The most humid month in London is December, with an average relative humidity of 88%.

What is the average humidity in December in London?

The average relative humidity in December is 88%.

How many days does it rain in December in London?

In London, in December, it is raining for 11.1 days, with typically 37mm of accumulated precipitation.

How many days does it snow in December in London?

In London, during December, snow falls for 1.2 days and regularly aggregates up to 9mm of snow.

What is the month with the shortest days in London?

With an average of 7h and 54min of daylight, December has the shortest days of the year in London.

How many hours of daylight does London have in December?

In London, the average day length in December is 7h and 56min.

What time are sunrise and sunset in December in London?

On the first day of December in London, United Kingdom, sunrise is at 7:43 am and sunset at 3:55 pm. On the last day of the month, sunrise is at 8:06 am and sunset at 4:00 pm GMT.

How many hours of sunshine does London have in December?

In December, the average sunshine duration in London is 4.2h.

When is the lowest UV index in London?

The months with the lowest UV index in London are January, February, November and December, with an average maximum UV index of 2.

How high is the UV index in December in London?

In London, United Kingdom, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health 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

10.4°C

7.8°C

6.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

16.5km/h

17.9km/h

17.4km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

15.4

17.5

16.8

Average UV index

Average cloud cover

Average visibility

Average temperature in December
London, United Kingdom

Average high temperature in December: 7.8°C

The warmest month (with the highest average high temperature) is July (22.3°C).
The month with the lowest average high temperature is January (6.8°C).

Average low temperature in December: 3.5°C

The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (2.2°C).

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Average pressure in December
London, United Kingdom

Average pressure in December: 1014.5mbar

The month with the highest atmospheric pressure is September (1016.9mbar).
The month with the lowest atmospheric pressure is November (1010.6mbar).

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Average wind speed in December
London, United Kingdom

Average wind speed in December: 17km/h

The windiest month (with the highest average wind speed) is February (17.3km/h).
The calmest month (with the lowest average wind speed) is September (12.6km/h).

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Average humidity in December
London, United Kingdom

Average humidity in December: 88%

The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is August (72%).

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Average rainfall in December
London, United Kingdom

Average rainfall in December: 37mm

The wettest month (with the highest rainfall) is June (45mm).
The driest month (with the least rainfall) is April (22mm).

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Average rainfall days in December
London, United Kingdom

Average rainfall days in December: 11.1 days

The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is September (9.8 days).

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Average snowfall in December
London, United Kingdom

Average snowfall in December: 9mm

The month with the highest snowfall is February (16mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days in December
London, United Kingdom

Average snowfall days in December: 1.2 days

The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
London, United Kingdom

Average daylight in December: 7h and 5min

The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).

Average sunshine in December: 4h and 1min

The month with the most sunshine is August (Average sunshine: 7h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).

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Average sunshine days in December
London, United Kingdom

Average sunshine days in December: 17.5 days

The month with the most sunshine days is September (18.1 days).
The month with the least sunshine days is June (12.2 days).

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Average UV index in December
London, United Kingdom

Average UV index in December: 2

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
London, United Kingdom

Average cloud cover in December: 58

The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 49).

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Average visibility in December
London, United Kingdom

Average visibility in December: 9km

The months with the highest visibility are January, February, March, April, May, June, July, August, October and December (9km).
The months with the lowest visibility are September and November (8km).

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December weather forecast
London, United Kingdom

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