London

Greater London Weather in December

Average temperatures, rainfall, sunshine and the best places to visit in Greater London, the United Kingdom in December.

Are you planning a trip a to Greater London, the United Kingdom in December and wondering what kind of weather to expect? This page has all the details you need.

What to Expect in Greater London in December

Greater London, the United Kingdom is a region in the United Kingdom. December in Greater London generally has cold temperatures, with moderate precipitation. December is a winter month.

Temperatures

You can expect cold maximum daytime temperatures of around 9°C (48°F) and nighttime temperatures around 3°C (37°F) in London.

For a closer look at conditions across Greater London, the United Kingdom, refer to the map below.

Precipitation

In December, precipitation varies across different areas. From moderate rainfall in Potters Bar with an average of 59 mm (2.3 in) to moderate rainfall in Sutton with 65 mm (2.6 in).

Average sunshine

Sunshine is more limited in many areas during this month. London receives about 54 hours of sunlight. For sunnier weather, check our weather planner to find destinations with better conditions.

Explore Greater London by month

Pick a month to see the average temperature, rainfall and sunshine in Greater London — and find the best time to visit. (based on London)

Best Places to Visit in Greater London in December

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Greater London.

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Greater London

What is the weather like in December for some of the most popular destinations in Greater London, the United Kingdom?

Temperature range in Greater London (December)

Precipitation variation in Greater London (December)

London

In December London generally has low temperatures with maximum daytime temperatures around 9°C (48°F), minimum nighttime temperatures around 3°C (37°F) and moderate monthly rainfall. So on average the conditions are poor that month.

November
December
January
Max temperature
12°C (54°F)
9°C (48°F)
9°C (48°F)
Min temperature
5°C (41°F)
3°C (37°F)
3°C (37°F)
Monthly sun hours
70 hours
54 hours
62 hours
Monthly rainfall
68 mm (2.7 in)
63 mm (2.5 in)
60 mm (2.4 in)
Monthly rainy days
16 days
16 days
18 days
Weather conditions

Croydon

In December Croydon generally has low temperatures with maximum daytime temperatures around 9°C (48°F), minimum nighttime temperatures around 3°C (37°F) and moderate monthly rainfall. So on average the conditions are poor that month.

November
December
January
Max temperature
12°C (54°F)
9°C (48°F)
9°C (48°F)
Min temperature
5°C (41°F)
3°C (37°F)
3°C (37°F)
Monthly sun hours
70 hours
54 hours
62 hours
Monthly rainfall
69 mm (2.7 in)
65 mm (2.6 in)
61 mm (2.4 in)
Monthly rainy days
15 days
15 days
16 days
Weather conditions

Ilford

In December Ilford generally has low temperatures with maximum daytime temperatures around 9°C (48°F), minimum nighttime temperatures around 3°C (37°F) and moderate monthly rainfall. So on average the conditions are poor that month.

November
December
January
Max temperature
12°C (54°F)
9°C (48°F)
9°C (48°F)
Min temperature
5°C (41°F)
3°C (37°F)
3°C (37°F)
Monthly sun hours
71 hours
49 hours
61 hours
Monthly rainfall
63 mm (2.5 in)
60 mm (2.4 in)
57 mm (2.2 in)
Monthly rainy days
15 days
15 days
16 days
Weather conditions

Hounslow

In December Hounslow generally has low temperatures with maximum daytime temperatures around 9°C (48°F), minimum nighttime temperatures around 3°C (37°F) and moderate monthly rainfall. So on average the conditions are poor that month.

November
December
January
Max temperature
12°C (54°F)
9°C (48°F)
9°C (48°F)
Min temperature
5°C (41°F)
3°C (37°F)
3°C (37°F)
Monthly sun hours
70 hours
54 hours
62 hours
Monthly rainfall
68 mm (2.7 in)
63 mm (2.5 in)
60 mm (2.4 in)
Monthly rainy days
16 days
16 days
17 days
Weather conditions

Harrow

In December Harrow generally has low temperatures with maximum daytime temperatures around 9°C (48°F), minimum nighttime temperatures around 3°C (37°F) and moderate monthly rainfall. So on average the conditions are poor that month.

November
December
January
Max temperature
12°C (54°F)
9°C (48°F)
9°C (48°F)
Min temperature
5°C (41°F)
3°C (37°F)
3°C (37°F)
Monthly sun hours
70 hours
54 hours
62 hours
Monthly rainfall
67 mm (2.6 in)
62 mm (2.4 in)
59 mm (2.3 in)
Monthly rainy days
16 days
16 days
17 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Greater London, in the United Kingdom.

In our records: the United Kingdom December extremes

Notable December records observed across cities in the United Kingdom in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • In our records, the coldest December daytime high in the United Kingdom was -10°C (14°F) in Glasgow on December 29, 1995.
  • From our sources, the wettest December day in the United Kingdom brought 301 mm (12 in) in Belfast on December 4, 1982.

Popular cities in December

Day & night temperatures, rainfall and average weather in Greater London in December.

City Weather Day temp Night temp Rainfall
London 9°C (48°F) 3°C (37°F) 63 mm (2.5 in)
Croydon 9°C (48°F) 3°C (37°F) 65 mm (2.6 in)
Ilford 9°C (48°F) 3°C (37°F) 60 mm (2.4 in)
Hounslow 9°C (48°F) 3°C (37°F) 63 mm (2.5 in)
Harrow 9°C (48°F) 3°C (37°F) 62 mm (2.4 in)
Kingston upon Thames 9°C (48°F) 3°C (37°F) 64 mm (2.5 in)

Greater London weather in December: frequently asked questions

What is the weather like in Greater London, the United Kingdom in December?

Expect poor weather across Greater London, the United Kingdom in December. The popular destination of London averages 9°C (48°F) by day and 3°C (37°F) at night during this winter month.

What is the average temperature in Greater London, the United Kingdom in December?

London averages a daytime maximum of 9°C (48°F) in December, with overnight lows close to 3°C (37°F).

Does Greater London, the United Kingdom get a lot of rain in December?

Rain is generally moderate to light in Greater London, the United Kingdom during December, with London averaging close to 63 mm (2.5 in).

Is December a Good Time to Visit Greater London, the United Kingdom?

In our view, December might not be the best time to travel to Greater London, the United Kingdom with often poor weather in London.

On average, the best time to visit Greater London, the United Kingdom is in June, July, August and September with generally perfect weather in London. The weather in January, February and December, on the other hand, tends to be poor.

Interested in more climate information?

We have much more information about the climate in Greater London.

Weather and climate has detailed information for every country in the world. Are you going to the United Kingdom? Get detailed historical weather averages for many cities in the United Kingdom.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.