Grande Plage du Sillon Surf Forecast

Wind at Grande Plage du Sillon today: 12 kn W (gusting 21 kn). Wind direction relative to the shore affects 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, 8 s period from NW, peeling 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 surfing at Grande Plage du Sillon today is around 07:00 UTC, when conditions score 82/100 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 83/100 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.

For sure it is! We have done extensive testing and refinement of the forecast models and conditions scores to provide results that you can have confidence in.

If you surf, foil, paddleboard, swim or anything in between — and want to know exactly what the conditions will be like for you — then yes, 4Shor's for you. 🌊

Current forecast apps only provide swell, wind and tide data and in many cases expect you to do the analysis yourself. 4Shor goes the extra mile — we model how waves will break and build that into our forecasts to allow us to create conditions scores for your chosen water sport and skill level – something that no other app does.

4Shor uses ShorSense™ — our coastal intelligence engine that combines satellite-derived bathymetry (fancy word for underwater mapping), advanced wave models with wind and tide data to generate precision, hyper-local forecasts.

Yep. Both Premium and Pro come with a 7-day free trial. You get full access for 7 days, then decide if the sessions saved are worth the price of a post-surf burrito.

Absolutely. Whether you're chasing your first green wave or doing your first kitesurf body drag, 4Shor helps you choose the right place at the right time for your sport and ability. Think of it as a smart local who knows when it's mellow enough for learning and when it's time to sit on the sand and watch.