Is it raining now in Morriston?
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Last updated: 20:00, 5 Oct 2026
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Rain in Morriston: What You Need to Know
Morriston stands above the River Tawe on the northern edge of Swansea, known for the Morriston Tabernacle chapel and Morriston Hospital, with the valley opening up towards Clydach and the Brecon Beacons beyond. Rain off the Bristol Channel is lifted by the hills north of the town before it reaches the lower Tawe. Pulling up a Morriston rain radar clears this up quickly, as hyperlocal radar shows the rain's real position rather than a general outlook.
The hills north of Morriston lift rain arriving off the Bristol Channel, so the high ground towards Clydach can be soaked while the Tawe valley floor below Morriston stays drier a while longer. Three ranges stand between the Atlantic and inland Wales: the Brecon Beacons, the Cambrian Mountains and Snowdonia, all of which push incoming air upward as it crosses them. That lift raises rainfall quickly the higher the ground gets, which is why the valleys cutting through South Wales see noticeably more rain each year than Cardiff does out on the coastal plain.
The live rain map for Morriston, 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 on the hills above Morriston or already down by the Tawe, which a forecast for the town cannot tell you.
Rain by Season in Morriston
Autumn and winter frontal season (September to January)
Winter rain on the hills above Morriston raises the Tawe through the valley, and the lower streets near the river are the first to be affected. 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.
Transition months (February to April)
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. Cold spring showers cross the valley quickly, and the walk to the Tabernacle is the plan most often caught out.
Summer season (May to August)
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. Summer showers are short, and a walk along the Tawe valley depends on the gaps between them.
Why You Need a Rain Radar in Morriston
Morriston Tabernacle visitors
The walk to the Tabernacle chapel crosses open streets with little cover in a downpour. Look at the map before setting out.
Tawe valley walkers
The path along the River Tawe below Morriston can rise quickly after rain on the hills above. Watch the cell approach and decide whether to start the walk.
Morriston Hospital visitors
Visitors walking to Morriston Hospital from the town centre cross open ground with little shelter once a shower starts. See whether the cell will pass before setting out.
Commuters on the A48 and towards the M4
The A48 through Morriston and the approach to the M4 slow in heavy rain, and spray builds fast on the open stretches. Check the map and weigh up leaving now against waiting for the gap.
RainViewer Radar Coverage in Morriston
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 Morriston the map also covers Swansea, Clydach and Pontardawe.
Morriston Rain Radar: Frequently Asked Questions
- How does rain affect the walk to Morriston Tabernacle?
The walk between the town centre and the Tabernacle chapel crosses open streets with almost no cover, and a shower off the Bristol Channel can arrive within minutes of building over the hills. Visitors and worshippers both watch the sky before setting out. RainViewer shows the shower building on the hills before it reaches the town.
- Does rain affect the A48 through Morriston?
Yes, heavy rain slows the A48 through Morriston and the approach roads towards the M4, and spray builds fast on the open stretches. A radar check before joining the road shows what's ahead. A look at the map shows whether the cell has passed or is still on the way.
- Does Morriston flood when it rains?
Yes, the River Tawe can rise through the valley below Morriston after prolonged rain on the hills above, and the lower streets near the river are the most exposed part of the town. The higher ground around the Tabernacle stays largely dry. The radar shows whether more rain is falling on the hills.
- When is the best time to visit Morriston to avoid rain?
May to September is the best window to visit Morriston, with the Tawe valley and the town centre at their best. Showers are shorter in summer but the hills above still catch their share. Check the radar in the morning and plan outdoor time around the gap.
- Why can it rain on the hills above Morriston while the Tawe valley floor stays dry around Morriston?
The hills north of the town lift an approaching shower and drop the heaviest rain on the high ground, so the slopes towards Clydach can be soaked while the valley floor below Morriston stays dry a while longer. A forecast covers both places with one number, while the radar map shows the rain crossing the hills above Morriston and missing the Tawe valley floor.
- What data sits behind the Morriston weather radar map?
The Morriston weather radar map runs on Met Office radar data, the same network used by meteorologists, refreshed roughly every 5 minutes. 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 live feed is what gives the map its street-level, hyperlocal detail.
- What can I do with RainViewer in Morriston beyond checking current rain?
Set a rain alert on the Tabernacle or the Tawe valley and RainViewer warns you before rain arrives, with a hyperlocal view down to street level. That lets you time a walk by the river or a visit to the chapel. The 2-hour forecast in 5-minute slices shows the next gap, and saved locations track Clydach and Swansea together.
Track Rain in Morriston in Real Time
A walk to the Tabernacle and a stroll along the Tawe both depend on a dry gap, and RainViewer shows the next one.
Showers off the Bristol Channel reach Morriston quickly, and the gap between two bands is the window that matters.
Your weather app says rain in Morriston this afternoon. RainViewer's live hyperlocal radar shows the cell still on the hills above with the town centre still dry, and that decides whether the walk starts now.
Track rain in Morriston — 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 to the Tabernacle to the minute.
Rain alerts before arrival
Put an alert on the Tawe valley. RainViewer warns you minutes ahead, which settles whether to walk the valley now or wait for the shower to clear.
Direction arrows on the map
Rain reaches Morriston 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 hills above Morriston, which is the fastest way to judge ground conditions.
Multiple locations
Save the Tabernacle, the Tawe valley and Swansea and check all three in one look.
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