Coast, St Mary's, Isles of Scilly. We calculate high and low water here from an ocean tide model — accurate to about 5 cm on open coasts, considerably less in tidal flats and river mouths. This spot is not in any official register — there are no water samples and no classification.
Water temperature 16.7 °C — NOAA Geo-Polar Blended (5 km), measured 20/09/2026 13:00.
Low tide at 09:07, High tide at 15:02 (Local time at the spot).
Swimming spots in St Mary's · Isles of Scilly · Swimming spots in the United Kingdom · Atlantic Ocean · On the map