Nestled in the picturesque Gower Peninsula, Caswell Bay boasts a stunning sand shoreline surrounded by lush greenery and dramatic cliffs. This beautiful Welsh beach consistently earns an Excellent rating for its water quality, thanks to the diligent monitoring by Natural Resources Wales. During the summer months, the water temperature at Caswell Bay typically ranges from 15°C to 18°C, perfect for a refreshing swim.
Hand-picked holiday cottages & coastal retreats near Caswell Bay (Swansea) & surrounds
Rural Retreats
From £483
Owl Cottage is a charming Rural Retreat located on a Welsh Hillside close to the Brecon Beacons. Ideal for walkers, cyclists and wildlife enthusiasts looking to explore the beau...
Rural Retreats
From £596
In association with Trinity House, we are pleased to present Stella at Nash Point Lighthouse. One of two former lighthouse keeper's cottages available on the Glamorgan Heritage ...
Rural Retreats
From £468
Nos Da (Welsh for “good night”) is a beautifully presented contemporary cottage offering the ideal tranquil escape in South Wales’ beautiful countryside and nearby coastline mak...
Rural Retreats
From £724
Rexton House is light and spacious property, tucked away in the beautiful seaside town of Llanwit Major. This comfortable property is the perfect base to explore the local area ...
Rural Retreats
From £755
In association with Trinity House, we are pleased to present Ariel at Nash Point Lighthouse. One of two former lighthouse keeper's cottages available on the Glamorgan Heritage C...
Rural Retreats
From £448
Nos Da (Welsh for “good night”) is a beautifully presented contemporary cottage offering the ideal tranquil escape in South Wales’ beautiful countryside and nearby coastline mak...
Rural Retreats
From £763
In association with Trinity House, we are pleased to present Stella at Nash Point Lighthouse. One of two former lighthouse keeper's cottages available on the Glamorgan Heritage ...
Rural Retreats
From £385
The Cwtch provides you with the peace and tranquillity of the countryside, with close proximity to a beautiful coastline and the many attractions that South Wales has to offer i...
Harmonic astronomical predictions, tidal coefficients & flow rate
| Day | High & Low Tides (Local Time) | Tidal Range | Coeff / Phase |
|---|---|---|---|
| Wed 11 Nov | ▼ Low 13:05 (1.42m)▲ High 19:17 (8.73m) | 7.31m | Spring (89) |
| Today | ▼ Low 01:17 (1.59m)▲ High 07:32 (8.74m)▼ Low 13:35 (1.68m)▲ High 19:49 (8.42m) | 7.15m | Spring (87) |
| Fri 13 Nov | ▼ Low 01:46 (1.86m)▲ High 08:04 (8.46m)▼ Low 14:06 (1.99m)▲ High 20:21 (8.08m) | 6.60m | Coeff 79 |
| Sat 14 Nov | ▼ Low 02:18 (2.17m)▲ High 08:38 (8.13m)▼ Low 14:41 (2.33m)▲ High 20:56 (7.71m) | 5.96m | Coeff 70 |
| Sun 15 Nov | ▼ Low 02:54 (2.51m)▲ High 09:15 (7.77m)▼ Low 15:21 (2.67m)▲ High 21:37 (7.34m) | 5.26m | Coeff 60 |
| Mon 16 Nov | ▼ Low 03:38 (2.85m)▲ High 10:00 (7.42m)▼ Low 16:11 (3.00m)▲ High 22:27 (7.01m) | 4.57m | Coeff 51 |
| Tue 17 Nov | ▼ Low 04:33 (3.16m)▲ High 10:56 (7.12m)▼ Low 17:15 (3.22m)▲ High 23:31 (6.79m) | 3.96m | Neap (42) |
The shoreline consists primarily of sand. Sediment type dictates underfoot comfort, wave energy absorption, and the water's clarity when currents stir up the seabed.
Water quality is classified as excellent, meeting the highest cleanliness standards. Bacterial counts (E. coli & Intestinal Enterococci) are consistently low, posing negligible health risks.
Bacterial levels are highly susceptible to storm runoff. Heavy rainfall in the local catchment is likely to trigger storm overflows and agricultural runoff, rendering the water temporarily unsafe.
Tested weekly by the Environment Agency England for bacteria levels (E. coli & Intestinal Enterococci) between May and September.
Monitored as a coastal beach. Coastal beaches are subject to tidal flows and marine dilution, whereas inland lakes/rivers suffer from low water circulation, meaning bacteria can linger longer.
Unknown is the regional utility responsible for waste water treatment, sewage infrastructure, and storm overflow management in this catchment area.
Officially designated as a protected bathing water site in 1988. This designation mandates regular public health monitoring.
Governed under local district sanitation and environmental safety regulations in the Swansea area.
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