Live wave height, wind and water temp — plus an 8-day forecast scored 0–100 for every sport.
Photo: Gordon Hatton / Wikimedia Commons · CC BY-SA 2.0
Today at Traeth Llydan: Excellent for e-foiling — 85/100 for expert level. Wind 6 kn E · Tide -1.1 to 0.3 m. Best window around 16:00 UTC. Today's conditions at Traeth Llydan: 0.3m waves with light offshore wind. E-Foiling looks Excellent in the afternoon, with Kite Foiling also worth considering. Water temperature is 15°C / 58°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.
Traeth Llydan faces SW, open to the prevailing swell and wind. For e-foiling that is the hard direction: expect the surface to be workable only when the forecast genuinely drops, not on an average day.
Today's wind is cross-offshore at 6 kn. Light enough that the surface should stay workable for e-foiling.
Over the published window Traeth Llydan clears 60/100 for e-foiling at Intermediate, Advanced, Expert levels — that is who this spot is for on this sport. Today, 9 of 10 daylight hours clear that line at Intermediate.
Among the 31 scored spots within reach today, Traeth Llydan ranks 3rd for e-foiling. 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.
This is a wide, golden, SW-facing sandy beach over a mile long, backed by dunes, known for kitesurfing and windsurfing. Its beachbreak is fickle onshore windswell, rideable surf rare on a threading SW swell; rocky outcrops sit at either end. Kitesurfers keep to the left side; a boat lane is marked out. A river crossing appears mid-tide with a strong rip, and another rip runs at the south end. No lifeguard is on the beach.
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Wind at Traeth Llydan today: 6 kn E (gusting 14 kn). Wind direction relative to the shore affects e-foiling 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 Traeth Llydan today: 0.4 m, 9 s period from SW, surging 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 e-foiling at Traeth Llydan today is around 13:00 UTC, when conditions score 74/100 for intermediate level. Conditions can shift by the hour — the 4Shor app shows the full 24-hour score chart.
For beginners, Traeth Llydan 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.
Traeth Llydan 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.
Traeth Llydan is a coastal location near Rhosneigr in United Kingdom. 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 Traeth Llydan, 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.
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