London weather in January
Long-run climate averages for London, Ontario in January, plus what the forecast models say for the days ahead.
In January, London averages 1°C by day and -4°C at night. The wettest month is usually August.
January in London averages a daytime high of 1°C and an overnight low of -4°C, which reads as cold for this part of the world. It is the coldest month of the year here. Overnight temperatures drop below freezing, so expect frost and pack accordingly. Across the whole year London sees roughly 1008 mm of precipitation.
Climate averages tell you what to pack. They do not tell you what next Tuesday looks like - for that, see the live London forecast with every model compared and how much they currently agree.
London weather by month
what to expect in London through the yearHere is London's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to London by season.
Bottom line: over the last 30 days the European model has been the most accurate forecast for London, scoring 91/100 on our CheckWeather Score, ahead of the American at 80. See the full CA accuracy scoreboard for exactly how every model is tested.
Common questions
How warm is London in January?
Is January a good time to visit London?
Does it rain a lot in London in January?
Climate averages from ERA5 reanalysis. Model accuracy re-scored over a rolling 30 days. Page updated .