Praia da Gralha (São Martinho do Porto)

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. This is a nudist spot.

• High tide at 13:19, Low tide at 19:29 (Local time at the spot)
• Sea: Atlantic Ocean
• Water temperature 16.1 °C — NOAA Geo-Polar Blended (5 km), measured 04/11/2026 12:00

Common questions about this spot

How warm is the water?

Water temperature 16.1 °C — NOAA Geo-Polar Blended (5 km), measured 04/11/2026 12:00.

When is high and low tide?

High tide at 13:19, Low tide at 19:29 (Local time at the spot).

Is nudism allowed?

This is a nudist spot.

Swimming spots in São Martinho do Porto · Alcobaça · Swimming spots in Portugal · Atlantic Ocean · On the map