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 Porsévigné: Good for surfing — 76/100 for intermediate level. Wind 5 kn S · Waves 1.2 m, 15 s · Tide -1.4 to 0.6 m. Best window around 23:00 UTC. Today's conditions at Plage de Porsévigné: 1.0m waves with light offshore wind. Kite Foiling looks Excellent in the morning, with E-Foiling also worth considering. Water temperature is 15°C / 59°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 Porsévigné faces N. Which swells reach it — and therefore whether there is anything worth riding — depends on that aspect more than on the open-ocean forecast height.
Today's wind is offshore at 5 kn. That is the direction you want for surfing — it holds the face up and clean instead of crumbling it.
Over the published window Plage de Porsévigné clears 60/100 for 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, 5 of 10 daylight hours clear that line at Intermediate.
Among the 31 scored spots within reach today, Plage de Porsévigné ranks 18th for 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 small, semi-wild Atlantic cove facing NNW into open ocean, with fine sand backed by low cliffs and a rocky outcrop on the northern side that shelters part of the bay. Exposed to Atlantic swell, it is used for surfing and bodyboarding, with windsurfing and kitesurfing also practised here. It is described as seasonally lifeguarded, though exact hours are unpublished. Tidal range is large; rocky outcrops become submerged diving platforms at high tide.
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Wind at Plage de Porsévigné today: 5 kn S (gusting 15 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 Plage de Porsévigné today: 1.2 m, 15 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 Plage de Porsévigné today is around 23:00 UTC, when conditions score 76/100 for intermediate level. Conditions can shift by the hour — the 4Shor app shows the full 24-hour score chart.
For beginners, Plage de Porsévigné scores 82/100 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.
Plage de Porsévigné 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 Porsévigné is a coastal location near Trézien 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 Porsévigné, 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.
