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Early winter · Weather & things to do

London in December

London cools off: highs slip to 46°F (8°C), from 51°F in November, with lows of 37°F (3°C) and about 2.8 in (71 mm) of rain.

With a comfort score of 50/100 (12th of 12), it's one of the toughest months, held back mainly by cool days.

London, United Kingdom
Avg high
46°F (8°C)
Avg low
37°F (3°C)
Rain
2.8 in (71 mm)
Humidity
94%
Cloud cover
76%
Daylight
~7 h 37 min
Comfort score
50/100 · Fair

What December feels like

Afternoons only reach about 46°F (8°C), so plan on a warm jacket.

Lows average 37°F (3°C).

Some rain is likely, about 2.8 in (71 mm) in the month, so pack for a shower or two.

Expect plenty of overcast days, with cloud cover near 76%.

Daylight is short, roughly 7 h 37 min mid-month, so start sightseeing early.

London: December compared with the months either side
NovemberDecemberJanuary
Avg high51°F11°C46°F8°C45°F7°C
Avg low40°F5°C37°F3°C35°F2°C
Rain2.9 in74 mm2.8 in71 mm2.6 in65 mm
Daylight8 h 33 min7 h 37 min8 h 06 min
Comfort595050

Plan around December

December is one of the lower-scoring months here; the best are May – September.

What to pack for December

What to do in London in December

A mixed month: these picks balance outdoor stops with indoor fallbacks.

Nearby in December

NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.

London in December: quick answers

Is December a good time to visit London?

It's one of the tougher months here, scoring 50/100, held back mainly by cool days. The best months are May – September. Expect highs of 46°F (8°C) and 2.8 in (71 mm) of rain. Our London, the Cotswolds & Bath route recommends May – Sep, so December is outside its suggested window.

How cold is London in December?

Average highs are 46°F (8°C) and average lows 37°F (3°C), making it the 2nd-coldest month by daytime highs.

Does it rain a lot in London in December?

Some: about 2.8 in (71 mm) of rain falls across December on average, the 3rd-wettest month of the year. The annual total is about 28.0 in (710 mm).

What should I pack for London in December?

Bring insulated jacket (highs only 46°F), packable rain jacket or umbrella (a shower or two is likely) and comfortable walking shoes (most places below are best reached on foot or with short walks).

Planning London in December?

Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.

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