Carmarthen Bay
| Carmarthen Bay | ||
|---|---|---|
| Waters | Bristol Channel, Celtic Sea | |
| Land mass | Great Britain (island) | |
| Geographical location | 51 ° 39 ′ N , 4 ° 31 ′ W | |
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| width | 30 km | |
| depth | 14 km | |
| Islands | St Catherine's Island , Caldey | |
| Tributaries | Afon Tywi , River Taff , Gwendraeth | |
The Carmarthen Bay ( Welsh : Bae Caerfyrddin ) is a 30 km wide and 14 km long bay in the south of Wales . On the coast of the bay are a few beaches and parts of the Pembrokeshire Coast National Park .
The rivers River Towy ( Welsh : Tywi ), River Taff and Gwendraeth flow into the bay, which lies on the north coast of the outer Bristol Channel and which is still assigned to the Celtic Sea . The boundaries of the bay are the island of Caldey south of Tenby and the Gower peninsula near Swansea .