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Last update: 21:00, 5 Oct 2026
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Rain in Reigate: What You Need to Know
Reigate sits at the foot of the North Downs, with Reigate Hill rising steeply behind the old castle grounds and the M25 cutting through a gap in the ridge nearby. The Downs take the first of any rain moving up from the Weald to the south. A Reigate rain radar shows the real picture, because hyperlocal radar follows the shower's shape rather than reporting a single number for the area.
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. Showers reach Reigate from the south across the Weald and lift sharply over the North Downs escarpment behind the town, so Reigate Hill can be in cloud and rain while the town centre below stays comparatively dry.
RainViewer shows Reigate, England, on a live weather map fed by the Met Office radar network, so the precipitation you see is what is falling now. The live map shows whether a shower has already crossed Reigate Hill or is still building over the Weald to the south, a hyperlocal detail a Surrey-wide forecast smooths away.
Rain by Season in Reigate
Autumn and winter frontal season (October to January)
Between October and January, one frontal band follows another, and named storms bring wind alongside the rain. The Thames and its tributaries respond to all that repeated rain by rising, with roads, rail lines and low-lying streets typically the first to be hit. Autumn and winter fronts pile up against the North Downs escarpment above Reigate, and the M25 gap in the ridge is the first to feel the worst of it.
Transition months (February to April)
Spring showers cross the Weald quickly, and walks up Reigate Hill are the plans most often cut short. Cold showers, hail and sun alternate, and forecasts are least reliable because the showers are small and fast. Spring races, park events and weekend sport are the most exposed.
Summer storm season (May to September)
Summer showers are lighter, but thunderstorms can build over the Downs and catch walkers on the open hilltop. From May to September, heat builds over the built-up area until thunderstorms break, producing short, intense rain that can flood roads and stations within minutes. Festivals, tennis and open-air events hinge on which way a storm cell tracks, which radar reveals before the sky itself does.
Why You Need a Rain Radar in Reigate
Reigate Hill walkers and viewpoint visitors
Reigate Hill's viewpoint and the open grassland around it catch showers before the town below does, and there is little shelter on the exposed slope. Checking the radar before setting out shows whether the hill is already wet.
Castle grounds and Priory Park visitors
Reigate's castle grounds and Priory Park sit in the sheltered town centre, and a shower on the hill above does not always reach the same spot at the same time. A look at the radar shows what is actually falling in town.
Commuters on the M25 through the Reigate gap
The M25 cutting through the gap in the North Downs near Reigate slows fast in heavy rain, and spray builds where the road climbs towards the ridge. Checking the radar before setting off helps decide whether to leave now or wait.
Reigate high street shoppers
Reigate's high street and market sit below the escarpment, and stallholders watch showers building over the Weald to the south. A look at the radar shows whether to expect a dry spell before the next one.
RainViewer Radar Coverage in Reigate
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 Reigate the map also covers Redhill, Dorking and Merstham.
Reigate Rain Radar: Frequently Asked Questions
- How does rain affect Reigate Hill above the town?
Reigate Hill rises steeply behind the town and catches showers crossing the Weald before the streets below feel the same rain, so the viewpoint can already be in cloud while Reigate town centre stays dry. Walkers heading up check the radar rather than the forecast for the town. RainViewer shows the shower lifting over the escarpment before it clears the top.
- Does rain affect the M25 through the Reigate gap?
Yes, the M25 through the gap in the North Downs near Reigate slows fast in heavy rain, and spray builds where the road climbs towards the ridge. Check the map before joining the road. RainViewer shows whether the cell is still on the ridge or already down at the town.
- Does Reigate flood when it rains?
Reigate does not flood often, since the town sits at the foot of the chalk Downs rather than on a river floodplain, but heavy rain on the escarpment above can send fast runoff down into the lower streets. The higher ground itself drains quickly. The radar shows whether a heavier band is still on the Downs.
- When is the best time to visit Reigate to avoid rain?
May to September is the best window to visit Reigate, when the walk up Reigate Hill and the castle grounds are at their driest. The escarpment above the town can still catch showers that miss lower ground in spring. The morning radar check shows the gap for the walk.
- Why can it rain on Reigate Hill while the castle grounds below stays dry around Reigate?
The North Downs escarpment above Reigate lifts approaching showers off the Weald and takes the first of the rain, while the castle grounds and town centre below can stay dry until the band finally drops off the ridge. Live radar shows the edge of each cell, so checking Reigate Hill and the castle grounds below separately shows which side of the line you are on.
- What makes RainViewer different from a normal weather forecast for Reigate?
A forecast for Reigate predicts rain with a probability, while RainViewer shows the rain the Met Office radar is measuring right now, with a new frame about every 5 minutes. Dual-polarization radar from the Met Office distinguishes heavy convective downpours from ordinary frontal rain, a distinction that matters in London because it is the convective storms that overwhelm underpasses and flood stations. That hyperlocal radar view tells you what is happening on your street.
- What can I do with RainViewer in Reigate beyond checking current rain?
Set a rain alert on Reigate Hill or the town centre and RainViewer warns you before rain arrives, which settles whether to start the climb now or wait for the ridge to clear. The 2-hour forecast in 5-minute slices shows the next gap, and saved locations track the hill and the town together.
Track Rain in Reigate in Real Time
A walk up Reigate Hill and an afternoon in the castle grounds both depend on a dry gap, and RainViewer shows the next one.
Rain around Reigate can turn into a downpour within minutes, so a quick radar check first is worth it.
Your weather app says rain in Reigate this afternoon. RainViewer's live hyperlocal radar shows the cell still building over the escarpment with the town centre still dry, which decides whether the walk up starts now.
Track rain in Reigate — free Upgrade to Essential for alerts, forecasts, and full radar history
2-hour forecast in 5-minute slices
Two hours of 5-minute steps let you time the walk up Reigate Hill to the minute.
Rain alerts before arrival
Put an alert on Reigate Hill. RainViewer warns you minutes ahead, which settles whether to start the climb now or wait for the ridge to clear.
Direction arrows on the map
Rain reaches Reigate most often from the south-west, so the arrows tell you at a glance whether a cell is heading your way.
48 hours of radar history
The 48-hour history shows what fell on the Weald south of Reigate, which is the fastest way to judge ground conditions.
Multiple locations
Save Reigate Hill, the castle grounds and Reigate town centre and check all three in one look.
RainViewer
