December London is the postcard: markets, rinks, lights on every street — wrapped around the year’s shortest days and one logistical trap every visitor should know before booking.
London Weather in December: The Short Answer
Daytime highs hover around 9°C with lows near 4°C. Despite the postcards, snow is rare in central London — grey, damp cold is the norm. Daylight bottoms out at barely 8 hours, so build your days around a late dawn and a 4pm dusk.
The One Thing to Know: Christmas Day Shutdown
On 25 December almost everything closes — attractions, restaurants, shops, and the entire public transport network including the Underground. Plan that day around your hotel and book any Christmas lunch months ahead. Our full guide to London during Christmas covers the details.
What’s On in December
Christmas markets and ice rinks across the city, Winter Wonderland in full swing, carol services in the great churches, Boxing Day sales from 26 December, and the ticketed New Year’s Eve fireworks on the river — those tickets sell out months in advance.
What to Pack
Your warmest coat, hat and gloves, plus layers for the abrupt warmth of shops and museums. An umbrella earns its place; snow boots do not.
Verdict
The most atmospheric month of the year for those who dress for it and book early. For quieter festive lead-up at lower prices, see November.