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 Juan Dolio, 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 mapReef canyon 17–40 m — outside the park, legal; grouper, snapper, pelagics on the edge. Estimated.
Google Maps33 m tug, ~18 m — legal (verify park limit); reef fish. City-level.
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 and are loosely applied. Before heading out, check with CODOPESCA (Law 307-04) and your charter/operator; marine national parks are no-fishing.
Juan Dolio has rock entry points such as Angels Ravine and Catuán (pecio). Juan Dolio is a dive town over barrier reef; the Angels Ravine site and Catuán wreck sit outside the park (legal on apnea). Below you'll find each spot (access, shelter and hazards) and today's forecast.
The reef belt by the capital, handy but murkier (Ozama plume). Best on calm days; La Caleta (no-take) — hunt outside the park.
Warm, ~26–29 °C — 2 mm. Murkier by the capital (Ozama plume); clearer eastward toward Boca Chica/La Caleta.
Intermediate: handy by the capital, but murkier water and La Caleta (no-take) — keep spots outside the park.
In Juan Dolio spearfishing needs a CODOPESCA licence (Ley 307-04) and is done on breath-hold (our conservative recommendation): hookah/compressors and night spearfishing are banned by law (Arts. 64 & 82), and although the law doesn't expressly ban a scuba tank, we recommend not diving on scuba. Lobster may not be speared (Art. 51). Lobster closed 1 Mar–30 Jun, conch (lambí) 1 Jul–31 Oct; inside the national parks (La Caleta, Cotubanamá, Montecristi, Jaragua) hunting is effectively banned — hunt outside the boundaries. Lionfish (invasive) is fair — and welcome — game. In Samaná, Jan–Mar is whale season (an advisory, not a closure). See the guide.
Sargassum: in seasonshore washups possibleAFAI satellite, 2026-10-24 · NOAA/USF
