London Weather in December: Climate, Temperature & Travel Tips
Avg 6.5°C · 64mm rain — December is winter in London.
- Avg high
- 9.1 °C
- Avg low
- 3.9 °C
- Avg
- 6.5 °C
- Precipitation
- 64 mm
Source: Open-Meteo Archive 2014–2023 · 10-year climate normals
Climate Overview
December in London, United Kingdom brings winter conditions: average temperature 6.5°C, average high 9.1°C, average low 3.9°C. Monthly rainfall averages 64mm, making it a moderate-rainfall time of year.
Pack winter clothing to stay comfortable during outdoor excursions.
What to Pack
- Heavy winter coat, thermal layers, gloves, hat
- Insulated waterproof boots
- A light rain jacket as backup
Best Things to Do
- Indoor museums, markets, and cafes
- Hot springs or indoor thermal facilities
- Evening illuminations and festivals (if any)
Pros and Cons of Visiting in December
Pros:
- A unique seasonal character that locals enjoy
Cons:
- Cold conditions require winter gear
Climate source: Open-Meteo Archive (2014–2023).
Colour = avg temperature · blue = cool · orange = warm
- 1 July 18.5°C
- 2 August 17.7°C
- 3 June 16.5°C
- 1 January 4.8°C
- 2 February 5.7°C
- 3 December 6.5°C
FAQ
01 What is the average temperature in London in December? +
The average is 6.5°C, with a high of 9°C and a low of 4°C.
02 What is London like to visit in December? +
It is winter in London, which is cool — bring warm clothes.
03 Does it rain often in London during December? +
Average rainfall is 64mm, which is moderate.
04 What should I pack for London in December? +
Heavy winter coat, thermal layers, gloves, hat; Insulated waterproof boots.
05 Is December a peak travel season for London? +
It is closer to off-season, with more reasonable prices and fewer crowds.
06 Where does this climate data come from? +
Monthly averages computed from Open-Meteo Archive 2014–2023 daily observations.
- Sources
- Open-Meteo Archive 2014-2023
- Updated
- 2026-04-17