Live wave height, wind and water temp — plus an 8-day forecast scored 0–100 for every sport.
Today at Grande Plage du Sillon: Good for kite surfing — 69/100 for beginner level. Wind 7 kn SE · Waves 1.1 m, 12 s · Tide -2.1 to 1.3 m. Best window around 20:00 UTC. Today's conditions at Grande Plage du Sillon: 0.5m waves with light offshore wind. Surfing looks Excellent in the morning, with Kite Foiling also worth considering. Water temperature is 17°C / 62°F.
Forecast updated · ShorSense™
Today plus the next two days are free for everyone — scored in 3-hour windows, just like the app. The full 8-day forecast lives in the 4Shor app.
Grande Plage du Sillon faces NW, open to the prevailing westerlies, so the wind arrives off the water rather than filtered through the land — the clean, steady flow kite surfing wants, and the reason gusts here are sea breezes rather than land turbulence.
Today's wind is offshore at 7 kn. Offshore is the one to be careful with for kite surfing — a failure blows you away from the beach, so it is a spot for a safety boat or a change of plan rather than a solo session.
Over the published window Grande Plage du Sillon clears 60/100 for kite surfing at every ability from Beginner to Expert — an unusually broad spot, which normally means a range of conditions rather than one narrow sweet spot. Today, 6 of 10 daylight hours clear that line at Intermediate.
Among the 31 scored spots within reach today, Grande Plage du Sillon ranks 15th for kite surfing. The order changes by discipline: the same conditions that put a spot top for one sport can drop it down the list for another.
Satellite-derived bathymetry with 10 m pixels and 10 cm vertical resolution out to ~40 m depth. The shape of the seabed is what determines where and how waves break.
Most apps run a single global model at 9–25 km. We blend regional NWP from national meteorological offices at 1.3–2 km — UK Met Office UKV, Météo-France AROME HD, ItaliaMeteo ICON-2I — with ECMWF IFS for the 8-day horizon. Finer resolution means the sea breeze, cliff funnelling and bay shadowing that changes everything for a session.
A nearshore wave model propagates the spectrum across the bathymetric mesh — modelling refraction, shoaling, dissipation, focusing and breaking as it goes. Most apps stop at swell + wind. We go further.
10 sport models × 4 ability levels weight wave height, period, wind, tide and breaking conditions differently — calibrated against ridden sessions so the scores mean what they say.
A sweeping 3 km urban Atlantic beach facing northwest, fully exposed to prevailing winds and swell, with a huge tidal range. The sandy beach-break has submerged reef slabs and rip currents; surfable waves need a large west-to-northwest swell and rarely arrive, so it mainly serves wind and kite sports. Kitesurfing is banned 10:00-20:00 (15 Jun-15 Sep) outside a 300 m launch corridor, and above 7 m depth. Lifeguards patrol July-August, 12:30-19:00.
Put live Grande Plage du Sillon conditions on your own website — a free embeddable widget, updated hourly, in three sizes. No account needed.
Get the free Grande Plage du Sillon widgetToday's conditions for Grande Plage du Sillon are free. Unlock the full 8-day forecast and per-sport alerts that ping you when this location is about to fire. more than 2,500 European locations, scored from the seabed up.
Wind at Grande Plage du Sillon today: 7 kn SE (gusting 17 kn). Wind direction relative to the shore affects kite surfing conditions significantly — offshore winds produce cleaner, glassier surfaces while onshore winds add chop. These are daily averages; the 4Shor app shows hourly detail.
Waves at Grande Plage du Sillon today: 1.1 m, 12 s period from NW, closing character. 4Shor derives nearshore wave conditions from ECMWF IFS 9-km atmospheric data and the IBI regional ocean model, updated hourly.
The best window for kite surfing at Grande Plage du Sillon today is around 13:00 UTC, when conditions score 69/100 for intermediate level. Conditions can shift by the hour — the 4Shor app shows the full 24-hour score chart.
For beginners, Grande Plage du Sillon scores 88/100 today for surfing — Excellent. A score of 65–79 is Good for a beginner; 80+ is Excellent (90+ is Epic!); below 45 the session is usually not worth it. 4Shor scores every location across Beginner, Intermediate, Advanced and Expert levels.
Grande Plage du Sillon is scored for Surfing, Windsurfing, Kite Surfing, Kite Foiling, Wing Foiling, E-Foiling, Paddleboarding, Swimming, Kayaking, Canoeing in the 4Shor forecast system. Conditions are rated Beginner through Expert for each sport, updated every hour, so you always know whether the session is worth the drive.
Grande Plage du Sillon is a coastal location near Saint-Malo in France. It is one of more than 2,500 European water-sport locations scored daily by 4Shor.
4Shor's ShorSense™ system combines satellite-derived seafloor mapping, nearshore wave models, wind and tide data to generate a hyper-local forecast. At Grande Plage du Sillon, conditions are scored hourly on a 0–100 scale for each sport and ability level. A score of 80+ means Excellent (90+ Epic!); 65–79 is Good; below 45 the session is usually not worth the drive.
Questions about 4Shor itself — accuracy, pricing, the free trial — are answered on the FAQ page.
