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Last update: 21:00, 5 Oct 2026
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Rain in Crawley: What You Need to Know
Crawley sits in the Sussex Weald between the North Downs and the South Downs, with Gatwick Airport on its northern edge and Tilgate Park to the south-east. The town is inland and low, so rain arrives from the Channel over the Downs, and thunderstorms build over the warm Weald in summer. A Crawley rain radar cuts through that uncertainty, since hyperlocal radar tracks each shower block by block rather than guessing for the whole area.
Frontal rain moves up the English Channel from the south-west to reach the south coast, where the coastline, the Downs and the Isle of Wight break each band apart as it pushes east. Warmer sea in autumn adds energy to showers, and they can build quickly along the shore, while inland areas stay dry under the same band. The South Downs to the south filter showers from the Channel, and the Weald's clay ground holds the water, so a band that crosses the Downs can still soak Crawley while the coast stays dry.
In Crawley, England, RainViewer's live map reflects Met Office radar scans as they come in, roughly every 5 minutes. The live map shows whether a shower is over the South Downs, at Gatwick or already at Tilgate Park, which a forecast for Crawley cannot tell you.
Rain by Season in Crawley
Autumn and winter frontal season (October to January)
Atlantic depressions move along or across the Channel, and named storms bring strong winds and high seas along with heavy rain. Seafront roads, ferries and coastal paths feel it first, and rain on already-saturated ground raises the flood risk in low-lying areas. Autumn and winter fronts saturate the Weald clay, and roads around Gatwick and the M23 flood in heavy rain.
Transition months (February to April)
Spring showers cross the Downs, and Tilgate Park and school-run plans are the most often caught. Fronts lose their strength and cold showers cross the coast, occasionally with hail. Narrow, quick-moving showers make forecasting difficult, and it is seafront events and spring outdoor plans that are most exposed.
Summer thunderstorm season (May to September)
Summer thunderstorms build over the warm Weald, and flight delays at Gatwick follow storms crossing the airport. Warm land and a cooler sea trigger sea-breeze storms, and thunderstorms from the continent can drift in. Beach days, festivals and air shows depend on the cell track, because a storm can be over the seafront within minutes.
Why You Need a Rain Radar in Crawley
Gatwick travellers and airport staff
Gatwick Airport is Crawley's biggest neighbour, and heavy rain and thunderstorms affect stands and terminal walks. Watch the cell approach and time the transfer from the station.
M23 and A23 commuters
The M23 at junction 10 and the A23 slow in heavy rain. Look at the radar to decide between heading out now and holding back.
Manor Royal workers and shoppers
Manor Royal business park staff and shoppers at the County Mall cross car parks in the open. See the shower's edge and time the walk.
Tilgate Park and K2 visitors
Families at Tilgate Park and the K2 leisure centre can see whether a shower will pass and choose between the park and the pool.
RainViewer Radar Coverage in Crawley
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 Crawley the map also covers Horsham, East Grinstead and Redhill.
Crawley Rain Radar: Frequently Asked Questions
- How does rain affect Gatwick Airport near Crawley?
Heavy rain and thunderstorms slow ground handling and can delay flights at Gatwick, and passengers and staff cross exposed walkways and car parks. Travellers watch the sky for the gap. RainViewer shows the storm crossing the Weald.
- Does rain affect the M23 near Crawley?
Yes, heavy rain slows the M23 at junction 10 and the A23, and spray builds where traffic bunches near the airport. A quick look at the map helps before joining the road. RainViewer shows whether the cell is ahead of you.
- Does Crawley flood when it rains?
Crawley has surface flooding on low roads near the River Mole and the Gatwick Stream after heavy rain, and the Weald clay holds water. Avoid flooded lanes. The live radar picture shows whether a heavier cell is closing in.
- When is the best time to visit Crawley to avoid rain?
May to September is the best window to visit Crawley, with Tilgate Park and St Leonard's Forest at their best. Summer storms blow through fast. A morning radar check shows the clearest stretch for time outside.
- Why can it rain on St Leonard's Forest while Crawley town centre stays dry around Crawley?
The Weald's woods and slightly higher ground at St Leonard's Forest lift showers, so the forest can be wet while Crawley town centre stays dry until the band moves across. A forecast covers both places with one number, while the radar map shows the rain crossing St Leonard's Forest and missing Crawley town centre.
- Is the Crawley radar map free to use?
The live radar map for Crawley is free on both iOS and Android, showing Met Office data refreshed roughly every 5 minutes. Covering the south coast, Met Office C-band radar measures precipitation over both the Channel and the land, so a band approaching from the sea shows up before it reaches the shore. That hyperlocal detail is available without paying anything to check it.
- What can I do with RainViewer in Crawley beyond checking current rain?
Set a rain alert on Gatwick Airport or Crawley station and RainViewer warns you before rain arrives. That lets you time a transfer or a walk. The 2-hour forecast in 5-minute slices shows the next gap, and saved locations track Tilgate Park and Three Bridges.
Track Rain in Crawley in Real Time
Gatwick transfers and a walk in Tilgate Park both depend on a dry gap, and RainViewer shows the next one.
Rain in Crawley comes up the Channel in bands, and a gap between two bands is often short.
Your weather app says showers in Crawley this afternoon. RainViewer's live hyperlocal radar shows the cell over the South Downs with Gatwick still dry, and that decides whether the transfer starts now.
Track rain in Crawley — free Upgrade to Essential for alerts, forecasts, and full radar history
2-hour forecast in 5-minute slices
Slice the next two hours into 5-minute steps and pick the gap for the walk in Tilgate Park.
Rain alerts before arrival
An alert on Gatwick Airport arrives while the rain is still on its way, and that decides whether to walk to the terminal or wait in the station.
Direction arrows on the map
In Crawley the wet weather tends to come from the south-west, up the English Channel, and the arrows show the track of every shower.
48 hours of radar history
Scroll back over the Weald near Crawley to see what actually fell overnight.
Multiple locations
Track Gatwick Airport, Tilgate Park and Crawley station together and compare which one is dry.
RainViewer
