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Last updated: 20:00, 5 Oct 2026
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Rain in Leatherhead: What You Need to Know
Leatherhead sits on the River Mole in Surrey, with Box Hill and the North Downs rising a short distance to the east and the M25 curving past the town. The Mole can rise quickly after rain on the Downs, even when Leatherhead itself has stayed largely dry. That is where a Leatherhead rain radar helps most, since hyperlocal radar reads the live position of the rain instead of an area forecast.
Showers reach Leatherhead from the south-west across the Surrey Weald, and the North Downs beyond Box Hill give them a lift, so the hills can be catching heavier rain while the town in the Mole valley sees a lighter band. Two separate mechanisms bring rain to London and the Thames Valley: frontal bands sweeping in from the south-west, and convective storms that build locally once the ground has warmed. The city itself adds heat on top of that, and the Chilterns and North Downs help steer and set off individual cells, so one part of town can be soaked while a neighbouring borough stays completely dry.
RainViewer draws the live rain radar for Leatherhead, England, from Met Office data, with real-time rain refreshed on every 5-minute radar update. The live map shows whether a shower is still over Box Hill and the Downs or already crossing the Mole at Leatherhead, a hyperlocal detail a Surrey-wide forecast smooths away.
Rain by Season in Leatherhead
Autumn and winter frontal season (October to January)
Autumn and winter fronts raise the River Mole through Leatherhead, and the riverside paths and Fetcham meadows are the first to flood. 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.
Transition months (February to April)
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. Spring showers cross the Weald quickly, and walks up Box Hill are the plans most often cut short.
Summer storm season (May to September)
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. Summer storms can build over the North Downs on warm afternoons, and picnics by the Mole depend on the gap before the next cell.
Why You Need a Rain Radar in Leatherhead
Box Hill walkers and cyclists
Box Hill's open slopes above Leatherhead catch showers before the town does, and cyclists on the hairpin bends have no shelter once a shower starts. Checking the radar before setting out shows whether the top is already wet.
River Mole riverside walkers
The Mole through Leatherhead rises quickly after heavy rain on the Downs above, and the riverside path near the town centre can flood fast. Watching the radar for rain over the high ground shows whether the river is likely to rise.
Commuters on the M25 and at Leatherhead station
The M25 past Leatherhead and the walk from the town's railway station slow in heavy rain, with spray building at the busy junctions. Checking the radar before setting off helps decide whether to leave now or wait.
Leatherhead Leisure Centre and town centre visitors
Leatherhead's town centre and leisure centre car parks are exposed, and a shower crossing the Weald can arrive with short notice. A look at the radar shows whether to make a dash for it or wait it out.
RainViewer Radar Coverage in Leatherhead
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 Leatherhead the map also covers Epsom, Dorking and Guildford.
Leatherhead Rain Radar: Frequently Asked Questions
- How does rain affect Box Hill above Leatherhead?
Box Hill's open slopes catch showers crossing the North Downs before Leatherhead itself, in the Mole valley below, feels the same rain. Cyclists tackling the hairpin bends check the radar rather than the forecast for the town. RainViewer shows the shower lifting over the Downs before it clears the top.
- Does rain affect the M25 near Leatherhead?
Yes, the M25 near Leatherhead slows in heavy rain, and spray builds where traffic bunches at the junctions close to the town. Look at the radar before merging onto the road. Checking the map shows whether the cell is still to arrive or already past.
- Does Leatherhead flood when it rains?
Yes, the River Mole can rise quickly through Leatherhead after heavy rain on the North Downs above Box Hill, and the riverside paths and low meadows near the town centre are the first to be affected. Higher ground away from the river is less exposed. The radar shows whether rain over the Downs is still building.
- When is the best time to visit Leatherhead to avoid rain?
May to September is the best window to visit Leatherhead, when Box Hill and the Mole valley walks are at their best. The Downs above the town can still catch showers that miss lower ground in spring. Check the radar first thing and plan the walk for the dry gap.
- Why can it rain on Box Hill while Leatherhead town centre stays dry around Leatherhead?
The North Downs above Box Hill lift approaching showers and take the first of the rain, while Leatherhead town centre in the Mole valley below can stay dry until the band finally drops off the hill. Live radar shows the edge of each cell, so checking Box Hill and Leatherhead town centre separately shows which side of the line you are on.
- What data sits behind the Leatherhead weather radar map?
The Leatherhead weather radar map runs on Met Office radar data, the same network used by meteorologists, refreshed roughly every 5 minutes. 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 live feed is what gives the map its street-level, hyperlocal detail.
- What can I do with RainViewer in Leatherhead beyond checking current rain?
Set a rain alert on Box Hill or the town centre and RainViewer warns you before rain arrives, which settles whether to start the climb now or wait for the Downs to clear. The 2-hour forecast in 5-minute slices shows the next gap, and saved locations track Box Hill and the Mole together.
Track Rain in Leatherhead in Real Time
A walk up Box Hill and a stroll beside the Mole both depend on a dry gap, and RainViewer shows the next one.
Showers and storms cross Leatherhead quickly, so timing shifts faster than a forecast updates.
A weather app says rain for Leatherhead this afternoon. RainViewer's live hyperlocal radar shows the cell still building over Box Hill with the town centre still dry, which decides whether the walk starts now.
Track rain in Leatherhead — 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 Box Hill to the minute.
Rain alerts before arrival
Put an alert on Box Hill. RainViewer warns you minutes ahead, which settles whether to start the climb now or wait for the Downs to clear.
Direction arrows on the map
Rain reaches Leatherhead 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 North Downs above Leatherhead, which is the fastest way to judge ground conditions.
Multiple locations
Save Box Hill, Leatherhead town centre and the River Mole and check all three in one look.
RainViewer
