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Last updated: 20:00, 5 Oct 2026
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Wells is England's smallest city, set at the foot of the Mendip Hills where springs that give the city its name still rise beside the cathedral. Rain on the Mendips behind the city feeds those springs and the moat around the Bishop's Palace, so the ground here stays wet even after a shower has passed. This is where a Wells rain radar earns its place. Hyperlocal weather radar shows the edge of each shower, which a city-wide forecast cannot.
Frontal bands cross the Severn Estuary from the west and rise over the Mendips to the south and the Cotswold edge to the east. The lift squeezes heavier rain out over the hills and the valleys that face the wind, and a standard forecast for the whole region averages that difference away. The steep Mendip scarp directly behind Wells lifts showers fast, so the city can be in heavy rain minutes after the hills first cloud over.
For anyone in Wells, England, RainViewer shows Met Office radar data live, refreshed with every new scan roughly every 5 minutes. The live map shows whether a shower is still climbing the Mendip scarp or already over the Cathedral Green, which a forecast for Wells cannot tell you.
From September, when Met Office storm names begin, one Atlantic depression follows another across the region. Frontal rain stays steady on the lower ground and builds over the Mendip and Cotswold high ground. This is when river levels rise fastest and hill roads change the most. Autumn and winter rain on the Mendip scarp keeps the springs and the Bishop's Palace moat running full, and the city's small streets can flood at the lowest points.
Spring showers roll off the hills quickly, and the market on the Cathedral Green and Vicars' Close are the first places to empty. Fronts weaken and showers take over, so a dry morning can turn into a hail-and-sun afternoon. Forecasts are least reliable because each shower is small and fast, and plans on high ground are the most exposed.
Summer visitors to the cathedral and the moat swans depend on short dry spells between showers off the Mendips. Rain falls less often but in heavier short bursts, and afternoon warmth over the ground can build thunderstorms. Most plans follow the sun, with the radar checked once cloud starts building, the point at which the map shows a storm cell's track.
The Cathedral Green and the west front are open to the weather, and coach parties queuing for a tour have no shelter until the doors. Checking the radar before the walk from the car park shows whether to wait a few minutes.
The moat around the Bishop's Palace and its famous bell-pulling swans draw visitors along an exposed path with little cover. Watching the cell on the radar shows whether the walk around the moat will stay dry.
The Wells market on the Cathedral Green sets up stalls with no permanent cover twice a week. Traders watch the radar to decide when to bring goods out or pack them away.
The steep path up onto the Mendips above Wells catches showers well before the city below does. A look at the radar shows whether the cell is already over the scarp.
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 Wells the map also covers Shepton Mallet, Glastonbury and Cheddar.
The Cathedral Green and the walk from the car parks to the west front are fully open, so a shower can soak visitors before they reach the doors, and the market stalls nearby have no permanent cover either. Guides and traders both watch the sky. RainViewer shows the hyperlocal picture of a cell dropping off the Mendip scarp before it reaches the Green.
Yes, the road below the Mendip scarp towards Cheddar can flood at low points after heavy rain on the hills, and spray builds fast on the narrow bends. Checking the radar before setting out shows whether the cell is ahead of you or already past.
Yes, the springs that give Wells its name can overflow after heavy rain on the Mendips, and the lowest streets near the moat and the market place can hold standing water. The cathedral itself sits on slightly higher ground. The radar shows whether more rain is still falling on the scarp.
May to September is the best window to visit Wells, when the Cathedral Green, the moat and Vicars' Close are at their most pleasant. Showers off the Mendips are shorter in summer but still arrive with little warning. Check the radar in the morning and plan the visit around the gap.
The scarp lifts approaching showers hard, so the hillside above Wells can be soaked while the Cathedral Green below stays dry until the same cell finally drops off the edge. RainViewer draws each shower where it actually is, which is why a look at the Cathedral Green and the Mendip scarp above the city can give different answers.
The Wells radar map needs a connection to pull the latest Met Office scan, refreshed roughly every 5 minutes, so it is not built for offline use. The Met Office runs C-band dual-polarization radar across the region, distinguishing rain from hail and wet snow, a distinction that counts most on the Mendip and Cotswold high ground, where a shower can change type as it climbs. That live, hyperlocal feed is only as current as the last successful update.
Set a rain alert on the Cathedral Green or the Bishop's Palace and RainViewer warns you before rain arrives, which settles whether to start the moat walk or wait in the cloisters. The 2-hour forecast in 5-minute slices shows the next gap, and saved locations track the market place and the scarp above town.
A walk around the moat and a visit to the Cathedral Green both depend on a dry gap, and RainViewer shows the next one.
Rain in Wells comes in bands off the Bristol Channel, and the gap between two bands is the window that matters.
Your phone forecast says rain in Wells this afternoon. RainViewer's live hyperlocal radar shows the cell still on the Mendip scarp with the Cathedral Green dry, which decides whether the moat walk starts now.
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The 5-minute steps show whether the walk around the moat fits inside the dry gap.
Set the alert at the Bishop's Palace, and the warning arrives in time to decide whether to start the moat walk now or shelter in the cloisters.
Storms usually arrive from the west and south-west over Wells, and the arrows show which way each cell is moving.
Check the Mendip scarp above the city in the last 48 hours to see how much rain came down.
Keep the Cathedral Green, the Bishop's Palace and Vicars' Close on the same list, each with its own alert.