Live wave height, wind and water temp — plus an 8-day forecast scored 0–100 for every sport.
Photo: ClwydianRanger / Wikimedia Commons · CC BY-SA 4.0
Today at Traeth Nefyn: Excellent for windsurfing — 87/100 for advanced level. Wind 12 kn E · Tide -1.0 to 0.2 m. Best window around 06:00 UTC. Today's conditions at Traeth Nefyn: flat with moderate offshore wind. Kite Foiling looks Epic! in the late morning, with Wing 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.
Traeth Nefyn faces NW, open to the prevailing westerlies, so the wind arrives off the water rather than filtered through the land — the clean, steady flow windsurfing wants, and the reason gusts here are sea breezes rather than land turbulence.
Today's wind is cross-shore at 12 kn. Straight cross-shore is the classic windsurfing direction: it lets you hold a line along the beach rather than fighting to get back to it.
Over the published window Traeth Nefyn clears 60/100 for windsurfing 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, 9 of 10 daylight hours clear that line at Intermediate.
Among the 31 scored spots within reach today, Traeth Nefyn ranks 2nd for windsurfing. 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 sheltered, predominantly sandy bay, popular with swimmers, kayakers, windsurfers, and kite surfers in calm water, backed by a steep lane and small car park. Rock pools are exposed at low tide near the headland. The beach-and-point break is inconsistent, coming to life mainly on winter SW swells with SE offshore wind. A boat exclusion zone protects the bay. There is no lifeguard; entry is safest at mid-to-high tide.
Put live Traeth Nefyn conditions on your own website — a free embeddable widget, updated hourly, in three sizes. No account needed.
Get the free Traeth Nefyn widgetToday's conditions for Traeth Nefyn 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 Traeth Nefyn today: 12 kn E (gusting 27 kn). Wind direction relative to the shore affects windsurfing 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 Nefyn today: 0.1 m, 10 s period from NE, flat 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 windsurfing at Traeth Nefyn today is around 01:00 UTC, when conditions score 87/100 for intermediate level. Conditions can shift by the hour — the 4Shor app shows the full 24-hour score chart.
For beginners, Traeth Nefyn scores 98/100 today for wing foiling — Epic!. 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 Nefyn 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 Nefyn is a coastal location near Nefyn 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 Nefyn, 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.
