Is it raining now in Clydach?
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Last updated: 20:00, 5 Oct 2026
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Rain in Clydach: What You Need to Know
Clydach is a village in the Swansea Valley on the River Tawe, below the wooded Clydach Gorge and on the edge of the Brecon Beacons, with the old aluminium works site close to the river. Rain lifted by the Beacons often soaks the gorge before it reaches the lower Tawe valley towards Swansea. A Clydach rain radar gives the answer directly: hyperlocal radar shows the shower's current position rather than an averaged chance of rain.
Welsh weather comes from the Atlantic, and the Brecon Beacons, the Cambrian Mountains and Snowdonia force the air upward. Rain totals rise sharply with height, so the South Wales valleys can be much wetter than the coastal plain at Cardiff. The Brecon Beacons rise above Clydach Gorge and lift an approaching band, so the wooded gorge and the high ground above the village can catch heavier rain than the valley floor towards Swansea.
The live rain map for Clydach, Wales, in RainViewer is built from Met Office radar, and each new scan appears on the map within minutes. The live map gives a hyperlocal read on whether a shower is still over the Beacons or already down at Clydach, which a forecast for the village cannot tell you.
Rain by Season in Clydach
Autumn and winter frontal season (September to January)
September through January is when Atlantic depressions and named storms arrive one after another, dropping persistent rain onto the hills. As the ground reaches saturation, rivers in the valleys rise fast, and mountain passes, valley roads and low-lying streets are usually the first to be affected. Winter rain on the Beacons raises the Tawe through Clydach, and the low ground near the river is the first to be affected.
Transition months (February to April)
Cold spring showers cross the gorge quickly, and a walk into Clydach Gorge is the plan most often cut short. Hail, sleet and wet snow on the tops alternate with fronts. Forecasts fail because showers are narrow, and hill walks and weekend rugby are the most exposed.
Summer season (May to August)
Summer showers are short, and a walk along the Tawe depends on the gaps between them. Rain eases off between May and August, though heavy showers and thunderstorms can still build over the hills on warm afternoons. Festivals, coastal trips and mountain walks all depend on finding one of the short dry windows in between.
Why You Need a Rain Radar in Clydach
Clydach Gorge walkers
The wooded tracks through Clydach Gorge catch a shower before the village below does, with tree cover only partial protection. Watch the cell approach and decide whether to start the walk.
Tawe riverside walkers
The path beside the River Tawe through Clydach can rise quickly after rain on the Beacons above. Check the radar before setting out.
Brecon Beacons hikers
Hikers heading up from Clydach towards the open Beacons catch a shower well before the valley does. See whether the cell will pass before starting the climb.
Commuters on the A4067
The A4067 through the Swansea Valley near Clydach slows in heavy rain, and runoff from the gorge can reach the road quickly. Check the radar and decide whether to go now or wait.
RainViewer Radar Coverage in Clydach
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 Clydach the map also covers Swansea, Morriston and Pontardawe.
Clydach Rain Radar: Frequently Asked Questions
- How does rain affect a walk through Clydach Gorge?
Clydach Gorge's wooded tracks catch a shower coming off the Brecon Beacons well before the village below, and the steep paths turn slippery fast once rain starts. Walkers on the higher ground feel it before those still down by the Tawe. RainViewer shows the shower building on the Beacons before it drops into the gorge.
- Does rain affect the A4067 near Clydach?
Yes, heavy rain slows the A4067 through the Swansea Valley near Clydach, and runoff from Clydach Gorge can reach the road quickly after a downpour. Look at the radar before getting onto the road. RainViewer marks the cell's position, so it is clear whether it is still coming or already gone.
- Does Clydach flood when it rains?
Yes, the River Tawe can rise through Clydach after prolonged rain on the Brecon Beacons, and the low ground near the old works site is the most exposed part of the village. The higher ground towards the gorge stays largely dry. The radar shows whether more rain is falling on the hills above.
- When is the best time to visit Clydach to avoid rain?
May to September is the best window to visit Clydach, with the gorge and the Tawe riverside at their best. Showers are shorter in summer but the Beacons above still catch their share. Checking the radar in the morning shows the best window before anything else.
- Why can it rain on Clydach Gorge above the village while the Tawe valley floor stays dry around Clydach?
The Brecon Beacons lift an approaching shower and drop the heaviest rain on the wooded gorge above Clydach, so the high ground can be soaked while the valley floor towards Swansea stays dry a while longer. A forecast covers both places with one number, while the radar map shows the rain crossing Clydach Gorge above the village and missing the Tawe valley floor.
- How current is the rain shown on the Clydach radar map?
The rain shown on the Clydach radar map reflects the latest Met Office scan, which lands roughly every 5 minutes rather than on a fixed forecast schedule. Met Office C-band radars cover Wales, and dual-polarization data helps separate rain from sleet and hail on the Brecon Beacons and valley tops. That currency is what makes the hyperlocal picture worth checking before heading out.
- What can I do with RainViewer in Clydach beyond checking current rain?
Set a rain alert on Clydach Gorge or the Tawe riverside and RainViewer warns you before rain arrives, with a hyperlocal view down to street level. That lets you time a walk into the gorge or a stroll by the river. The 2-hour forecast in 5-minute slices shows the next gap, and saved locations track Morriston and Pontardawe together.
Track Rain in Clydach in Real Time
A walk through Clydach Gorge and a stroll by the Tawe both depend on a dry gap, and RainViewer shows the next one.
Rain over Clydach often builds fastest on the valley heads, so a radar look before you leave gives useful warning.
The forecast says rain in Clydach this afternoon. RainViewer's live hyperlocal radar shows the cell still over the Beacons with the village still dry, and that decides whether the walk starts now.
Track rain in Clydach — 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 through the gorge to the minute.
Rain alerts before arrival
Put an alert on Clydach Gorge. RainViewer warns you minutes ahead, which settles whether to start the climb now or wait for the shower to clear.
Direction arrows on the map
Rain reaches Clydach most often from the west and south-west, off the Irish Sea and the Bristol Channel, 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 Brecon Beacons above Clydach, which is the fastest way to judge ground conditions.
Multiple locations
Save Clydach Gorge, the Tawe riverside and Morriston and check all three in one look.
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