How hot is London in December?

Daytime highs in London in December average 9°C (48°F); nights drop to about 4°C.

Does it rain in London in December?

Expect around 12.7 rainy days and 73 mm of rainfall in December.

Is December a good time to visit London?

December is a challenging month to visit London — consider June–August instead. Overall travel score: 2.7/10. The best months are June–August.

London weather in December

December is a challenging month to visit London — consider June–August instead. Expect highs around 9°C, lows near 4°C, and about 12.7 days with rain.

2.7 · Challengingtravel score for December

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Avg high

9°C

Avg low

4°C

Rainfall

73 mm

Rain days

12.7

Sunshine

3.3 h/day

Daylight

7.6 h

What to pack for London in December

a warm coat, hat and gloves
a compact umbrella or rain shell — rain is frequent

Humidity averages 88%; max daily wind around 23 km/h.

How December compares

Best months in London: June–August. See the full best time to visit London guide.

London in December: the details

In December, London sees average daytime highs of 9°C (48°F) and overnight lows of 4°C (39°F). Rainfall totals roughly 73 mm across 12.7 rainy days, and the sun shines about 3.3 hours per day with 7.6 hours of daylight mid-month. Relative humidity averages 88%.

These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for London, United Kingdom (51.51, -0.13) — see our methodology. Actual conditions vary year to year.

Where should you go next month?

Get one email a month with the destinations at their seasonal best. Double opt-in, unsubscribe anytime.