Sion 66.7
#2595 of 5756 surf spots in the world · 🇫🇷 France · Vendée · near Nantes
Works almost every day, no off season, real size comes through.
_-_2026-08-01_-_5.jpg){kind=link}
Best time to surf Sion
The best time to surf Sion is March, April, November. The season runs Apr to Apr. In November the water sits around 15°C, so pack a 4/3 with boots, and the typical wave is 2.1 m. The nearest airport is BOD (231 km) and the nearest town is Nantes (63 km).
| Month | Surfable | Clean | Size | Water | Suit |
|---|---|---|---|---|---|
| Jan | 82% | 26% | 2.0 m | 10°C | 6/5 |
| Feb | 94% | 36% | 2.3 m | 10°C | 5/4 |
| Mar | 95% | 39% | 1.8 m | 12°C | 5/4 |
| Apr | 93% | 41% | 1.3 m | 14°C | 4/3 |
| May | 95% | 10% | 1.1 m | 16°C | 3/2 |
| Jun | 94% | 9% | 1.0 m | 20°C | 2mm |
| Jul | 88% | 2% | 0.9 m | 20°C | 2mm |
| Aug | 86% | 5% | 1.0 m | 20°C | 2mm |
| Sep | 92% | 19% | 1.1 m | 19°C | 2mm |
| Oct | 94% | 20% | 1.6 m | 17°C | 3/2 |
| Nov | 93% | 55% | 2.1 m | 15°C | 4/3 |
| Dec | 87% | 28% | 2.5 m | 12°C | 5/4 |
What is under Sion
Eight kilometres out along its swell window the sea floor is still shallow, 18 m.
Measured, not estimated: NOAA ETOPO 2022 global relief at 15 arc-seconds, about 460 m per cell, sampled along this spot’s own swell window. At that scale the survey sees passes and channels; it cannot see a reef ledge, so nothing here is said about how the wave breaks.
Why 66.7
Seven parts, each normalised 0 to 1 and multiplied by its weight; the sum is scaled so the best spot in the world scores 100. Wave quality and what the spot does on its best days carry more than half of it, which is what separates this from a ranking of where the water is warm.
The detail
Faces 225° with 44% open water around it. Friendly morning wind 60% of days. Mean peak period 10.6 s. Days over 3 m: 12%. On its best tenth of days it reaches 3.2 m, with a peak period of 13 s. Mellow days (0.4 to 1.2 m): 38%. Months that work: 12 of 12. Coordinates 46.711, -1.982 (OpenStreetMap).
Live here
13 homes for sale within 30 km of Sion, up to 60,000 euro. Houses and flats you can move into, never plots of land. Cheapest right now €29,000. Checked 2026-09-13. Listings from Bien'ici and the agents themselves; we take no part in the deal.
€29,000House · 39 m² · 3 roomsSaint-Gilles-Croix-de-Vie6 km from the spot →
€29,900House · 32 m² · 3 roomsSaint-Hilaire-de-Riez7 km from the spot →
€34,000House · 36 m² · 3 roomsSaint-Gilles-Croix-de-Vie6 km from the spot →
€40,100Flat · 13 m² · 1 roomSaint-Jean-de-Monts10 km from the spot →
€47,000House · 48 m² · 4 roomsSaint-Gilles-Croix-de-Vie6 km from the spot →
€58,550House · 44 m² · 4 roomsSaint-Hilaire-de-Riez5 km from the spot →What it costs to be here
Remote spot, so the local estimate is 15% below the country average. Estimate: World Bank PPP price level for France (2025, United States = 1.00) applied to a fixed surfer basket, then adjusted for how remote the spot is. Your own number moves with the season and how you live.
Sumba has eight spots in this ranking, the best of them inside the world top 50. A cabin is €11,500. The land it sits on is separate, from €6,500 (€9,950 oceanfront), on an 80-year lease that extends at the end. Water, septic and electricity are another €6,500, and furniture is on top, so a finished cabin lands around €28,000 plus the land, payable in instalments.
Eco Beach City is run by the same people as SurfRanking, so treat this as our own advert, not a recommendation. It is an off-plan property in Indonesia: take your own legal and financial advice before paying anything.
Spots nearby
Filters by month, level and water, map, side by side comparison and a trip planner.