- window
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Cay & patch reef, 3–14 m — legal (outside reserves). Lobster (by hand only), grouper, snapper.
Google MapsToday — right on the edge — wave, wind and visibility.
Sources & confidence
Compiled by the spearo sea-state engine
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.
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: 1152 spots across 189 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 mapCay & patch reef, 3–14 m — legal (outside reserves). Lobster (by hand only), grouper, snapper.
Google MapsCay reef 3–15 m — WARNING: landing banned (primate reserve); surrounding water is dived. Estimated.
Google MapsReef 12–24 m — legal, intermediate; grouper, snapper, hogfish. Approximate.
Google MapsRocky reef, 3–15 m — legal (outside reserves). Hogfish, grouper, snapper.
Google MapsReef/ledge 18–21 m — legal, intermediate–advanced (sharks possible); grouper, snapper. Approximate.
Google MapsTugboat, 11–15 m — legal, beginner–intermediate; reef fish over the hull. Approximate (source disputes Humacao/Culebra).
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).
Humacao spearfishing revolves around Palmas del Mar reefs, The Cracks, Cayo Santiago and nearby Naguabo or Yabucoa options. The east trade wind is the main filter: if it is up, the reef may be choppy even when the marina looks calm. The Reserve sits around 12-24 m; The Cracks is a more advanced 18-21 m ledge with possible sharks. Carry a DRNA recreational licence, keep the spear more than 30 m off the coast, and hunt on breath-hold only. Night work is for lionfish. Cayo Santiago is no-landing, and unclear reserve status means closed.
Use The Reserve for intermediate reef, The Cracks only with a capable buddy, and Cayo Santiago only with full respect for the no-landing rule and any management restriction.
| Spot | Type | Depth | Level | Access | Notes |
|---|---|---|---|---|---|
| Palmas del Mar reefs (The Reserve) | Reef | 12-24 m | Intermediate | Boat or organized launch | Legal grouper, snapper and hogfish in clear water. East wind chop can ruin the window. |
| The Cracks / Retreat | Reef ledge | 18-21 m | Intermediate to advanced | Boat | Good structure with possible sharks. Do not use it as a casual second stop. |
| Cayo Santiago | Cay reef | 3-15 m | Intermediate | Boat, no landing | Nearby water is dived, but the island is a primate reserve. Fail closed if rules are unclear. |
Light morning trades and low east chop are the best signal. After rain or strong wind, expect reduced visibility around the reefs and marina approaches.
Visitors need the recreational licence. No scuba-assisted spearfishing, keep more than 30 m from shore, leave Nassau and goliath grouper, parrotfish and queen conch, and handle reserves conservatively.
No. Do not land because it is a primate reserve.
No. Spearfishing is breath-hold only.
No. It is intermediate to advanced.
When east trade wind chop is up.
Treat the area as closed.
Leave your email — and the moment a window opens at Humacao, we'll send the go / no-go verdict. Email is all we need.
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transparency ~11 m · satellite, 2 days agosatellite estimate · may differ right at the shore
buoy Vieques: 28.7° · wave 0.9 m · 3 h ago
Sargassum: in seasonshore washups possibleAFAI satellite, 2026-07-22 · NOAA/USF