Coast, São Martinho do Porto, Alcobaça. 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 16.4 °C — NOAA Geo-Polar Blended (5 km), measured 20/09/2026 13:00.
High tide at 13:05, Low tide at 19:26 (Local time at the spot).
Swimming spots in São Martinho do Porto · Alcobaça · Swimming spots in Portugal · Atlantic Ocean · On the map