- window
- Dawn before the nortada, summer to early autumn. Cold upwelled water after any run of N/NW wind.
- tide
- Slack water, when the current along the stones is weakest; on a hard-running tide the rip beside the groyne sets seaward.
- shelter
- Same as the whole stretch: no natural shelter, open at 280°, and only the groyne's own bulk gives a thin lee in N/NE wind.
- conditions
- Swell under ~0.5–1 m and light or offshore E/NE wind, summer flat spells only. ~3.1 m — slightly shallower than the north groyne, so it fills with sand faster and closes out sooner.
- hazard
- The seaward rip along the groyne is the standard exit hazard on this coast. Shorebreak slams the rock armour: enter and exit off the sand beside the structure, never off the stones. Visibility drops fast the moment any swell arrives.
- access
- Costa Nova: park in town, walk down onto the beach to the central groyne and enter off the sand beside it. The point is ~350 m seaward of the head.
«Praia da Costa Nova — Pontão Sul» of the pesqueiros register; point ~350 m seaward of the head. ~3.1 m.
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