London weather
Loading live data…Cloudy,much the same tomorrow
Env. Canada, the European and the American model put London's high today between 23° and 26°, a 3° split. Tomorrow looks cloudy around 24°, with a 0% chance of rain.
The weather map: all three models at once
Env. Canada, European, American side by side around London and nearby towns.Live rain radar →Next 14 hours
consensus of the three models14-day forecast
where the models agree, and where they splitLondon, Ontario. Below we compare what Env. Canada, European, American forecast for London right now and flag exactly where they disagree, then break down London's weather month by month and which forecast model has been most accurate here.
We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in Canada before you trust any single number.
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.
What London's weather is like through the year
London runs from warm summers, with July highs near 26°C, to cold winters, when February lows sit around -5°C (a swing of about 31°C across the year). August is usually the wettest month, and London sees roughly 1008 mm of precipitation annually. Overnight lows stay below freezing across 4 months (January, February, March and December), so London sees regular winter snowfall.
Best time to visit London
The most comfortable time to visit London is usually May, June, July and September, when daytime highs sit in the pleasant 16-26°C range and the heaviest August rain is behind you.
Which forecast is most accurate in London?
CheckWeather Score — graded against the weather that actually happened
The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 1302 cities. Lower error means a higher score. See which forecast model is most accurate in Canada, how we measure forecast accuracy, or which model each weather app uses.
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 72. See the full CA accuracy scoreboard for exactly how every model is tested.
Where the models disagree
temperature and rain, judged separatelyThe models often agree on temperature and still split on rain — and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.