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Last update: 21:00, 5 Oct 2026
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Englefield Green is a Surrey village bordering Windsor Great Park, close to Royal Holloway's campus and the Thames-side meadows at Runnymede. Rain arrives from the south-west across open Surrey and Berkshire countryside, and the flat riverside meadows can hold water long after the streets around the village green have dried. Anyone comparing a forecast with an Englefield Green rain radar sees the gap quickly, since hyperlocal radar shows where the rain is and where it is heading.
Frontal rain arrives from the south-west, but summer storms are the real forecasting problem. Heat trapped over the city and the Chilterns and North Downs steer and trigger cells, and drainage can be overwhelmed within minutes by a storm that a forecast rated as a chance of showers. The flat meadows at Runnymede beside the Thames drain slowly compared with the higher ground around the village green, so a band that clears Englefield Green quickly can leave the riverside sodden for hours afterwards.
RainViewer tracks Englefield Green, England, using Met Office radar scans that refresh roughly every 5 minutes, so the picture stays current. The live map shows whether a shower is still crossing Windsor Great Park or already over Runnymede, which a forecast for Englefield Green cannot tell you.
October to January is dominated by band after band of frontal rain, with named storms adding wind on top. As the rain keeps falling, the Thames and its tributaries rise, and it is the roads, railways and low-lying streets that feel the effects first. Autumn and winter fronts saturate the Thames catchment, and the meadows at Runnymede can flood after repeated bands of rain.
Cold spring showers cross the open country with little warning, and walks through Windsor Great Park are the plans most often cut short. Through February to April, cold showers, hail and sunny spells trade off quickly, and the small, fast-moving showers make this the hardest stretch of the year to forecast. Spring races, park events and weekend sport all carry the greatest exposure during this period.
Summer storms build over the warm ground, and picnics on the village green and at Runnymede depend on the gap between showers. Heat builds over the built-up area and thunderstorms produce short, intense rain that floods roads and stations in minutes. Festivals, tennis and open-air events depend on the storm cell's track, which the radar shows before the sky changes.
Windsor Great Park's open avenues and deer parkland have little shelter, and a shower crossing Surrey can reach the park with only a short warning. Checking the radar before setting out shows whether the band has already crossed the open country.
The Thames-side meadows at Runnymede can flood after heavy rain, and the paths hold water long after the rain has stopped. Watching the radar for rain over the catchment shows whether the meadow will be passable.
Students and staff crossing the open grounds between Royal Holloway's campus and the village have little cover once a shower starts. The radar shows whether the band will clear before the walk is done.
The road linking Englefield Green to Egham and the M25 slows in heavy rain, and spray builds on the busier stretches. A look at the radar shows whether the next band is minutes away or already past.
RainViewer shows UK precipitation using data from the Met Office, the national weather service, which runs a network of C-band dual-polarization weather radars. The Met Office network also feeds the European OPERA composite, and the RainViewer map refreshes with each new scan, about every 5 minutes. From Englefield Green the map also covers Egham, Windsor and Staines.
Windsor Great Park's open avenues and deer parkland close to Englefield Green have little shelter, and a shower crossing Surrey can arrive with only a short warning. Visitors checking the radar before setting out can see whether the band has already crossed the open country. RainViewer's hyperlocal radar follows the shower as it moves towards the park.
Yes, the road linking Englefield Green to Egham and the M25 slows in heavy rain, and spray builds where traffic bunches near the motorway junction. Check the radar before setting off to see whether the cell has reached the area. A look at the map shows whether the band is ahead or has cleared already.
The Thames-side meadows at Runnymede below Englefield Green can flood after prolonged rain, and the riverside paths are the first to be affected. The village green and the higher streets around it usually stay dry. The radar shows whether more rain is falling on the wider Thames catchment upstream.
May to September is the best window to visit Englefield Green, when Windsor Great Park and the Runnymede meadows are at their most pleasant. Summer storms are short but can still catch a picnic. A morning radar check shows where the dry gap falls, so outdoor plans can build around it.
The flat riverside meadows at Runnymede drain slowly after rain, so they can stay wet for hours while the village green on higher ground above the Thames dries out much sooner. A forecast covers both places with one number, while the radar map shows the rain crossing Runnymede meadows and missing the village green.
The rain map for Englefield Green is built primarily from Met Office ground radar, which reads precipitation directly rather than inferring it from cloud cover. Because London's worst flooding comes from short convective downpours rather than steady frontal rain, Met Office dual-polarization radar earns its keep here by telling the two apart before underpasses and stations start to flood. That radar-first approach is why the hyperlocal picture holds up street by street.
Set a rain alert on the village green or Runnymede and RainViewer warns you before rain arrives, which settles whether to head out or wait indoors. The 2-hour forecast in 5-minute slices shows the next gap, and saved locations track Windsor Great Park and Egham together.
A walk through Windsor Great Park and a stroll at Runnymede both depend on a dry gap, and RainViewer shows the next one.
Showers and storms cross Englefield Green quickly, so timing shifts faster than a forecast updates.
Your forecast for Englefield Green says rain this afternoon. RainViewer's live hyperlocal radar shows the cell still crossing Windsor Great Park with Runnymede still dry, and that decides whether the walk starts now.
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The 5-minute steps show whether the walk through Windsor Great Park fits inside the dry gap.
Set the alert at the village green, and the warning arrives in time to decide whether to head out or wait indoors.
Storms usually arrive from the south-west over Englefield Green, and the arrows show which way each cell is moving.
Check the Thames catchment upstream in the last 48 hours to see how much rain came down.
Keep Windsor Great Park, Runnymede and the village green on the same list, each with its own alert.