Coast, Tatsugō, Ōshima-gun. 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 27.7 °C — NOAA Geo-Polar Blended (5 km), measured 22/09/2026 21:00.
Low tide at 00:05, High tide at 05:58 (Local time at the spot).
Swimming spots in Tatsugō · Ōshima-gun · Swimming spots in Japan · Pacific Ocean · On the map