Today — sit it out — wave, wind and surge pounding.
Sources & confidence
Compiled by the spearo sea-state engine · How it works →
The verdict comes from seven water factors and hard safety gates — not ten tabs. Go or stay.
Our own model
Our own forecast engine — not a third-party widget. It weighs these water factors into one go-or-stay verdict for this coast; the 0–10 dial is that verdict, read out as a number.
Safety gates
It all folds into a single 0–10 score and one verdict: go or stay.
A forecast, not a guarantee — the sea has the last word.
Where to get in, where to hunt
Wind, wave and the swell windows — when to go and the best hours.
The day is picked above, in the hero. Here are that day's windows, the hour-by-hour map and the trends. Tap a window to break down the conditions.
Leave your email — and the moment a window opens at Mansión del Mar, we'll send the go / no-go verdict. Email is all we need.
What's missing? Tell us what you'd like to see — new spots, species, data or features. We read everything.
Visibility and what drives it — post-storm clearing, river plume, temperature and the thermocline.
spearo.app folds wind, wave, swell period, visibility, tides, water temperature and risk into a single verdict — go to the spot or not. It computes 7 days ahead from open marine models (Open-Meteo, IPMA), with no sign-up and no accounts. Built for solo spearfishing off the rocks, where any mistake costs dearly.
Now live: 3016 spots across 406 stretches of coast — mainland Portugal, Madeira and the Azores.
See all spotsRelief and bottom type, tides, and the depths of each spot.
The models set the window. Whether you go in is read only at the water: count the sets, watch the surge on the entry. If in doubt, you don't get in.
Scouted entries, coloured by today. The colour is the sea state at the spot, not a guarantee: the wash and a slippery entry you judge on site.
Open the seafloor mapShore access point Playa de Levittown, roughly 0.1 km from Mansión del Mar. The pin sits at 18.453 N / 66.176 W on the chart. The deepest water here is close to 4 m. Tides here rise and fall only a little.
Google MapsSOLO is the biggest risk: underwater you can black out from lack of oxygen silently and fatally, with no one around. Solo is never truly «safe». Below are the best weather windows; carry a buoy, tell someone your plan and exit time, and any doubt — don't go.
Cameras, map and reference — to hand as you come up.
Rules change. Before heading out, check with the DRNA (Departamento de Recursos Naturales y Ambientales) and the federal NOAA rules (50 CFR 622).
Mansión del Mar has rock entry points such as Playa de Levittown. On the Puerto Rico coast of United States, Mansión del Mar looks north-east: the local shoreline measures 28°. Below you'll find each spot (access, shelter and hazards) and today's forecast.
Atlantic: in winter (Dec–Mar) a big ground swell shuts the water, murkier. Best in summer and calm spells; it faces N.
Warm, ~26–28 °C — 2 mm. Murkier in winter from the ground swell; calm summer windows work.
Advanced: the winter ground swell makes the north unworkable; dive in the summer calms.
In Mansión del Mar (a US territory) spearfishing is legal on breath-hold only — scuba is banned (Fishing Regulation 7949, Arts. 18.2 & 18.9); the speargun, Hawaiian sling and pole spear are all legal on a single breath (Arts. 4.6, 22.1.g). The spear stays unloaded within 100 ft (30.48 m) of ALL coastline (Art. 8.6) and is banned in bathing areas, off piers and in reserves (8.5) and at night, except for lionfish (8.5). Lobster may not be speared (8.18). You need a DRNA recreational sea licence from age 13, even from shore (resident $20, 60+ $0, US non-resident $35, foreign visitor $50; Art. 16); in federal waters and on a charter none is needed. Never shoot Nassau or goliath grouper or queen conch — federal no-take. See the guide.
buoy San Juan: 29.8° · wave 1.1 m · 2 h ago
