Live wave height, wind and water temp — plus an 8-day forecast scored 0–100 for every sport.
Photo: Alan Hughes / Wikimedia Commons · CC BY-SA 2.0
Today at Jackson’s Bay: Epic! for kite foiling — 95/100 for expert level. Wind 13 kn E · Waves 0.6 m, 3 s · Tide -2.6 to 1.4 m. Best window around 12:00 UTC. Today's conditions at Jackson’s Bay: 0.5m waves with moderate cross-shore wind. Kite Foiling looks Epic! in the late morning, with Wing Foiling 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.
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 sheltered, south-facing sandy cove on the quieter side of a headland, about 170 metres long with soft golden sand and a gentle slope, used for calm-water swimming, paddleboarding, and kayaking. Submerged rocks are a hazard, and a large mud/sand patch is exposed at low tide. There is no lifeguard; the extreme Bristol Channel tidal range and strong currents demand tide-awareness, with entry best timed from two hours before high tide.
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Jackson’s Bay scores 39/100 today for surfing at intermediate level — Poor. Wind 13 kn E · Waves 0.6 m, 3 s · Tide -2.6 to 1.4 m. Scores are updated hourly by 4Shor ShorSense™.
Wind at Jackson’s Bay today: 13 kn E (gusting 24 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 Jackson’s Bay today: 0.6 m, 3 s period from S, closing character. 4Shor derives nearshore wave conditions from ECMWF IFS 9-km atmospheric data and the IBI regional ocean model, updated hourly.
For beginners, Jackson’s Bay scores 72/100 today for kite surfing — Good. 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.
Jackson’s Bay 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.
Jackson’s Bay is a coastal location near Barry 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 Jackson’s Bay, 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.
