In January, London typically sees daytime highs of -2.2°C and overnight lows around -9.8°C. Compared to the annual average high of 12.6°C, January runs -14.8°C.
January in London averages a daytime high of -2.2°C and an overnight low of -9.8°C.
January runs -14.8°C compared to London's annual average high of 12.6°C, ranking #12 of 12 months by warmth.
Plan for daytime highs near -2.2°C and cooler evenings around -9.8°C.