Wales · Swansea
Swansea Bay
Caution. Sewage discharge 0.7km away 2 days ago.
Water quality only This says nothing about tides, rip currents, cold water shock or lifeguard cover. Cold water and currents are dangerous even when the water is clean. Read the local signs before you go in. What we cannot tell you.
Checked UK time
Why this verdict
- Bathing season
- Closed until 15 May (neutral factor)
- Discharge nearby
- 0.7km 2 days ago (negative factor)
- Annual classification
- Good (positive factor)
- Latest E. coli
- 55 cfu/100ml (positive factor)
- Latest intestinal enterococci
- 36 cfu/100ml (positive factor)
Out of season
Weekly sampling and the daily pollution-risk forecast pause on 30 September and resume on 15 May. This verdict rests on the annual classification, live storm-overflow data and rainfall in the last 24 hours.
Storm overflows are driven by rain, so they spill more in autumn and winter than in summer. See every spill happening now across the UK.
Water temperature
18.2°C Mild
Sea surface, modelled by Open-Meteo.
Tide
Tide is rising
- High water Today
- Low water Today
- High water Today
- Low water Tomorrow
Modelled by Open-Meteo and approximate. Checked against tide gauges these times ran up to half an hour early, so treat them as a guide to whether the water is coming in or going out, not as a tide table. For exact times see Admiralty EasyTide.
Recent sewage discharges nearby
Storm overflows operated by Welsh Water within ten kilometres in the last 48 hours.
- Ended 2 days agoSandfields Storm Overflow · into Estuarial Waters of Swansea Bay700m from the bathing water
- Ended 2 days agoOff Somset Place Swansea Storm Overflow · into Estuarial Waters of the River Tawe2.3km from the bathing water
- Ended yesterdayCwm Road Swansea Storm Overflow · into Culvert of the Burlais Brook2.5km from the bathing water
- Ended 2 days agoCwmbach Road Storm Overflow · into Afon Llan3.5km from the bathing water
- Ended yesterdayFfordd Cwm Tawe Storm Overflow · into River Tawe4.1km from the bathing water
- Ended yesterdayNorton Road and Avenue Junction Swansea Storm Overflow · into Swansea Bay4.4km from the bathing water
- Ended 2 days agoMumbles Knab Rock Storm Overflow · into Estuarial Waters of Swansea Bay5.0km from the bathing water
- Ended 2 days agoNewton Road Overflow · into Caswell Bay5.4km from the bathing water
- Ended yesterdayWychtree Street Beaufort Road Storm Overflow · into River Tawe5.6km from the bathing water
- Ongoing since 11 hours agoBrithwen Road Junction with Swansea Road Storm Overflow · into Gors-Fawr Brook5.8km from the bathing water
- Ended yesterdayCrown Street Morriston Storm Overflow · into The Nant Melyn6.3km from the bathing water
- Ended 2 days agoSamlet Road Storm Overflow · into Nant-Y-Fendrod6.6km from the bathing water
- Ended 7 hours agoBaglan Sea Storm Overflow · into Swansea Bay7.1km from the bathing water
- Ended yesterdayLlanllienwen Road Clydach Storm Overflow · into Unnamed Tributary of Afon Tawe7.9km from the bathing water
- Ended 2 days agoWalters Road Llansamlet Storm Overflow · into Nant Bran8.0km from the bathing water
- Ended 2 days agoWaun Road Loughor Overflow · into Llwchwr8.1km from the bathing water
- Ended yesterdayWaun Road Loughor No.2 Storm Overflow · into Afon Lliw8.1km from the bathing water
- Ended 2 days agoPont y Cob Road Storm Overflow · into Afon Lliw8.2km from the bathing water
- Ended 2 days agoRhosog Storm Overflow · into Afon Lliw8.9km from the bathing water
- Ended 2 days agoPontilw Storm Overflow · into Afon Lliw9.0km from the bathing water
- Ended 2 days agoClydach Road Side Street Storm Overflow · into River Tawe9.1km from the bathing water
- Ended yesterdayGiant's Grave Storm Overflow · into Neath Estuary9.4km from the bathing water
- Ended yesterdayDynevor Junction Storm Overflow · into Neath Estuary9.6km from the bathing water
- Ongoing since an hour agoBwrw Road Loughor Overflow · into Llwchwr9.8km from the bathing water
- Ended 2 days agoBwlch Road Glanymor Road Storm Overflow · into River Loughor9.8km from the bathing water
See Welsh Water's own storm-overflow map(opens in a new tab) →
Latest bacteria reading
Latest sample · 17 September 2026 · 2 weeks ago
- E. coli
- 55cfu/100ml
- Intestinal enterococci
- 36cfu/100ml
This is the most recent reading. Sampling resumes on 15 May. E. coli and intestinal enterococci are the indicator organisms used in the official classification.
Classification record, 2015 to 2025
Rated Good in both 2015 and 2025.
The regulator republishes this every November as a percentile over readings from up to four bathing seasons, so it describes the water's record rather than today. No classification was made for 2020, when the pandemic cut the bathing season short.
Common questions
- Can you swim at Swansea Bay?
- Caution. Sewage discharge 0.7km away 2 days ago. Swansea Bay is a designated bathing water, so it is sampled and rated every season. This answer covers water quality only, not tides, currents or lifeguard cover.
- What is the water quality like at Swansea Bay?
- Swansea Bay is rated Good in the regulator's 2025 annual classification, a percentile taken over readings from up to four bathing seasons. The most recent sample, taken 17 September 2026, showed 55 cfu/100ml of E. coli and 36 cfu/100ml of intestinal enterococci.
- Has there been sewage at Swansea Bay recently?
- Yes. 25 storm overflows within ten kilometres of Swansea Bay: 2 discharging now and 23 in the last 48 hours.
Where this data comes from
- Contains Natural Resources Wales information © NRW and database right
- Contains water-company storm overflow data, licensed under OGL v3
- View the regulator's full profile
Other beaches nearby
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Gareth Clubb