Live wave height, wind and water temp — plus an 8-day forecast scored 0–100 for every sport.
Photo: Ze Caetano / Wikimedia Commons · CC BY 2.0
Today at Praia do Portinho da Arrábida: Good for swimming — 79/100 for expert level. Wind 6 kn NW · Tide -0.9 to 0.2 m. Best window around 00:00 UTC. Today's conditions at Praia do Portinho da Arrábida: 0.3m waves with light cross-shore wind. Kite Foiling looks Excellent in the afternoon, with E-Foiling also worth considering. Water temperature is 18°C / 64°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.
Praia do Portinho da Arrábida faces S. 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 6 kn. Light enough that the surface should stay workable for swimming.
Over the published window Praia do Portinho da Arrábida clears 60/100 for swimming 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 11 daylight hours clear that line at Intermediate.
Among the 31 scored spots within reach today, Praia do Portinho da Arrábida is level with one other at the top for swimming — nothing nearby is scoring better, so pick on distance.
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, sheltered south-southeast cove beneath limestone cliffs inside a natural park and marine reserve, with a sandy bottom giving way to rocky reef further out. Calm, clear water suits swimming, snorkelling, diving, kayaking and paddleboarding rather than surfing or wind sports; urchins on rocky sections make water shoes advisable. Fishing and spearfishing are banned. In summer the access road is restricted, with a shuttle bus and lifeguards present.
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Get the free Praia do Portinho da Arrábida widgetToday's conditions for Praia do Portinho da Arrábida 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 Praia do Portinho da Arrábida today: 6 kn NW (gusting 21 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 Praia do Portinho da Arrábida today: 0.4 m, 12 s period from N, mushy 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 swimming at Praia do Portinho da Arrábida today is around 23:00 UTC, when conditions score 77/100 for intermediate level. Conditions can shift by the hour — the 4Shor app shows the full 24-hour score chart.
For beginners, Praia do Portinho da Arrábida scores 74/100 today for kite foiling — 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.
Praia do Portinho da Arrábida 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.
Praia do Portinho da Arrábida is a coastal location near Portinho da Arrábida in Portugal. 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 Praia do Portinho da Arrábida, 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.
