Watch House Bay, a picturesque coastal gem in the Vale of Glamorgan, Wales, boasts a stunning shoreline of sand and shingle. However, the bay's water quality has been classified as Poor by Natural Resources Wales, which may deter some visitors. During the summer months, the water temperature at Watch House Bay is estimated to be around 15°C.
Hand-picked holiday cottages & coastal retreats near Watch House Bay (the Vale of Glamorgan) & surrounds
Cornwall Hideaways
From £954
The Watch House is a dream seaside escape, perfect for drinking in the beauty of the Cornish coastline and relaxing away from the chaos of everyday life. With unmatched, panoram...
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...
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...
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 ...
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 13:31 (1.41m)▲ High 19:46 (10.41m) | 9.00m | Spring (92) |
| Today | ▼ Low 01:45 (1.58m)▲ High 08:01 (10.40m)▼ Low 14:03 (1.67m)▲ High 20:18 (10.06m) | 8.82m | Spring (90) |
| Fri 13 Nov | ▼ Low 02:16 (1.86m)▲ High 08:34 (10.07m)▼ Low 14:35 (1.99m)▲ High 20:51 (9.67m) | 8.21m | Coeff 82 |
| Sat 14 Nov | ▼ Low 02:48 (2.17m)▲ High 09:07 (9.70m)▼ Low 15:10 (2.33m)▲ High 21:26 (9.26m) | 7.53m | Coeff 72 |
| Sun 15 Nov | ▼ Low 03:24 (2.52m)▲ High 09:45 (9.30m)▼ Low 15:49 (2.70m)▲ High 22:07 (8.84m) | 6.78m | Coeff 62 |
| Mon 16 Nov | ▼ Low 04:07 (2.89m)▲ High 10:30 (8.91m)▼ Low 16:37 (3.05m)▲ High 22:56 (8.47m) | 6.02m | Coeff 52 |
| Tue 17 Nov | ▼ Low 05:00 (3.23m)▲ High 11:24 (8.58m)▼ Low 17:38 (3.32m)▲ High 23:57 (8.21m) | 5.35m | Neap (43) |
The shoreline consists primarily of sand, shingle. Sediment type dictates underfoot comfort, wave energy absorption, and the water's clarity when currents stir up the seabed.
Water quality regularly fails to meet safe bathing standards. Swimmers face an elevated risk of stomach infections or skin rashes due to high bacterial loads.
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 2023. This designation mandates regular public health monitoring.
Governed under local district sanitation and environmental safety regulations in the the Vale of Glamorgan area.