Swanley weather
Loading live data…Heavy drizzle,rain likely tomorrow
Met Office, the European and the American model agree on a high near 21° in Swanley today. Tomorrow looks drizzle around 19°, with a 27% chance of rain.
CheckWeather.io on iPhoneFree. No ads, no account.Swanley weather warnings
Met Office yellow, amber and red warnings for London & South East EnglandChecking the Met Office for warnings in force for London & South East England…
Swanley weather in numbers
measured normals and 10 years of recorded weatherSwanley swings 20°C across the year, from 22°C highs in August to 2°C lows in January, and September is usually the wettest month in a year that brings about 858 mm of precipitation. Over 10 years of recorded weather it averages 18 days a year at 25°C or above, 3 of them at 30°C or above, 24 frost nights, and rain on 133 days.
Day counts are from the ERA5 reanalysis for Swanley’s grid square, 2016 to 2025, counted the same way for every city so the numbers compare. A reanalysis square is an area, not a weather station, so it is good for counting days and not for a single day’s record.
The weather map: all three models at once
Met Office, European, American side by side around Swanley and nearby towns.Live rain radar →Swanley hourly forecast: next 14 hours
consensus of the three modelsRain in the next 24 hours, model by model
each model's own hourly precipitation, side by sideLoading the three models…
Swanley 10-day forecast, out to 14 days
where the models agree, and where they splitSwanley, England is at its warmest in Aug (average highs near 22°C) and coldest in Jan (lows around 2°C), with roughly 858 mm of precipitation across the year. Below, compare what Met Office, European, American forecast for Swanley right now, and see exactly where they disagree.
We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United Kingdom before you trust any single number.
Swanley climate by month
average daytime high and overnight low across a typical yearWhich forecast is most accurate in Swanley?
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 1887 cities. Lower error means a higher score. See which forecast model is most accurate in United Kingdom, how we measure forecast accuracy, or which model each weather app uses.
What do you think of the forecasts?
your vote countsThe accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United Kingdom? Give each 1 to 5 stars.
One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.
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.