In December, London typically sees daytime highs of 7.4°C and overnight lows around 2.3°C. Compared to the annual average high of 13.6°C, December runs -6.2°C.
December in London averages a daytime high of 7.4°C and an overnight low of 2.3°C.
December runs -6.2°C compared to London's annual average high of 13.6°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 7.4°C and cooler evenings around 2.3°C.