Saint-Marc – Grand Traict

Saint-Nazaire (Saint-Marc-sur-Mer) · Loire-Atlantique · France

Today’s forecast: the current surf forecast for Saint-Marc – Grand Traict (wave height, swell, wind, tide and a 0–10 rating for every hour of the next 16 days) are only shown on SurfCams. They change every hour, so this text doesn’t contain them. To check today’s surf, open https://surf-cams.com/spot/saint-nazaire-grand-traict.

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A rocky cove on the Saint-Marc-sur-Mer shore, between Saint-Eugène and Géorama beaches inside Pointe de Chémoulin, where rights peel along rock shelves covered in oysters. Tucked away from much of the wind, it works as a semi-fallback when other spots are messy. High tide gives slow, easy rights, while mid to low tide brings better-shaped, punchier waves. It is known locally as the surf spot of Saint-Marc but rarely draws a crowd.

Level
Intermediate
Break
Point break, rock
Waves
Rights
Crowd
Some company
Season
autumn, winter, spring
Boards
A longboard or mid-length for the soft high-tide rights; a shortboard when it gets punchier lower in the tide.

When it works

✓ A solid south-west swell with a north to north-east wind, from mid to high tide.

When it doesn't

✕ Small swells that fail to wrap in toward the estuary mouth, and strong south to south-west onshore winds.

Watch out for

  • rocks
  • reef

Best months

January, February, March, April, October, November, December

Local tips

Reef boots are close to essential: the oyster-covered shelves cut feet badly. Come at high tide for a cruisy session, or toward mid to low tide for more push. When La Courance turns into a closeout shorebreak at high tide, these softer rights are the usual alternative.

Getting there

On the Saint-Marc coast west of the village, off route de l'Océan, with a bus stop (line H2, Grand Traict) about 200 m away. Parking around the Chémoulin coves is tight and the rocky way down needs care.

Travel notes

How often it works
Surf-forecast rates it quite reliable outside summer. It is sheltered from the wind, so it is a useful fallback when La Courance closes out.
Crowd and vibe
It is quiet, with a small crowd, partly because the oyster-covered rocks put people off.
Camping and vans
A campsite faces La Courance beach, about 1.5 km east. In our directory, Camping du Bugeau and Camping Bel Air in Pornichet are about 3 km away. Nearest campsite about 1.5 km away.
Facilities
There are no facilities at the cove. Saint-Marc-sur-Mer village, nearby, has cafés and the M. Hulot beach with summer lifeguards.
Water quality
The nearest monitoring point, Les Jaunais, was rated good every season from 2022 to 2025. The M. Hulot beach in Saint-Marc holds the 2026 Pavillon Bleu.

Ideal conditions

Swell
SSW–WSW best, S–W works
Size
2.5–4 m offshore swell; starts at 1.5 m, holds to 5.5 m
Period
11 s minimum, best from 14 s
Wind
Offshore NW–NNE; handles onshore up to 20 km/h
Tide
mid, high best
Faces
SE (145°)

Live cam

No cam at this spot yet: the forecast and the guide are on the map.

Nearby spots

All spots in Loire-Atlantique · All spots

Sources