Vale of Glamorgan · open water conditions information
Tresilian Bay (Llantwit Major) is a coastal location in Vale of Glamorgan, one of 19 Vale of Glamorgan spots covered by NippyIndex.
The shore faces broadly south, so it is most open to wind and swell arriving from the south.
As a tidal location, its tide predictions are referenced to the nearest tidal station, Porthcawl.
NippyIndex draws on published marine and weather data (sea state, wave information and water temperature) and UKHO tidal predictions.
New to cold water? NippyDips stocks kit for UK dippers — gloves, boots, changing robes and more.