Live wave height, wind and water temp — plus an 8-day forecast scored 0–100 for every sport.
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Today at Plage de Roc'h ar Gonc: Good for swimming — 73/100 for expert level. Wind 8 kn SE · Tide -1.5 to 0.7 m. Best window around 17:00 UTC. Today's conditions at Plage de Roc'h ar Gonc: 1.7m waves with light cross-shore wind. Kite Foiling looks Excellent in the midday, with Paddleboarding also worth considering. Water temperature is 16°C / 61°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.
Plage de Roc'h ar Gonc faces N. For swimming how much swell and wind that aspect keeps out matters more than the open-water forecast.
Today's wind is cross-shore at 8 kn. Light enough that the surface should stay workable for swimming.
Over the published window Plage de Roc'h ar Gonc clears 60/100 for swimming at Expert level — that is who this spot is for on this sport. Today, 0 of 10 daylight hours clear that line at Intermediate.
Among the 31 scored spots within reach today, Plage de Roc'h ar Gonc ranks 17th for swimming. 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 wild, dune-backed, NW-facing Atlantic beach with a mixed sand-and-rock bottom and a prominent rock formation on the sand. Submerged rocks are a documented hazard, and it serves as a quieter alternative beach break when the neighbouring surf spot is crowded. Low tide is best for exploring the rocky reefs on foot or by paddle, though tidal currents require local knowledge. No wheelchair access.
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Get the free Plage de Roc'h ar Gonc widgetToday's conditions for Plage de Roc'h ar Gonc 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 Plage de Roc'h ar Gonc today: 8 kn SE (gusting 29 kn). Wind direction relative to the shore affects swimming 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 Plage de Roc'h ar Gonc today: 1.8 m, 12 s period from W, hollow character. 4Shor derives nearshore wave conditions from ECMWF IFS 9-km atmospheric data and the IBI regional ocean model, updated hourly.
For beginners, Plage de Roc'h ar Gonc scores 21/100 today for surfing — Don't Bother. 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.
Plage de Roc'h ar Gonc 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.
Plage de Roc'h ar Gonc is a coastal location near Kerlouarn 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 Plage de Roc'h ar Gonc, 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.
