Today — right on the edge — wave, wind and visibility.
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 Sarteneja, 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 mapBarrier reef (fore-reef), to ~15 m, boat access. Open to the trade-wind chop — calm days only. Coords approx.
Google MapsBarrier reef (fore-reef), to ~12 m, boat access. Open to the trade-wind chop — calm days only. Near the sea border — stay in Belizean waters. Inside Bacalar Chico Marine Reserve (OSM boundary, approx.) — spearfishing banned. Coords approx.
Google MapsShoreline shallows, to ~3 m, shore or boat. River mouths nearby — visibility varies a lot and drops after rain. Inside Corozal Bay Wildlife Sanctuary (OSM boundary, approx.) — spearfishing banned.
Google MapsShoreline shallows, to ~2 m, shore. River mouths nearby — visibility varies a lot and drops after rain. Inside Corozal Bay Wildlife Sanctuary (OSM boundary, approx.) — spearfishing banned. Coords approx.
Google MapsCaye reef, to ~3 m, boat access. River mouths nearby — visibility varies a lot and drops after rain. Inside Corozal Bay Wildlife Sanctuary (OSM boundary, approx.) — spearfishing banned. Coords approx.
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.
Belize: spearfishing needs a fishing licence (Fisheries Resources Act 2020, s. 20) and no fishing on scuba without a special permit (Fisheries Regulations, reg. 7). Hol Chan, Bacalar Chico, the Caye Caulker reserve, Glover's Reef and the national parks and monuments (Half Moon Caye, Laughing Bird Caye) are closed to spearfishing; Turneffe, South Water Caye and Sapodilla have zoned rules. Check current rules locally.
Sarteneja has rock entry points such as Sarteneja shore flats, Shipstern Caye and Rocky Point (Sarteneja). A fishing village on the northern cape, facing the shallow Corozal / Chetumal Bay, known for the wooden sailing smacks that go out to the reef. Below you'll find each spot (access, shelter and hazards) and today's forecast.
March–June for calm, clear water; June–November hurricane season, northers in winter.
About 26–30 °C; visibility 15–30 m on the outer reef, 5–10 m in the lagoon.
Easy to moderate: currents in the reef cuts; Hol Chan, Bacalar Chico and the Caye Caulker reserve are closed to spearfishing.
Sarteneja: Belize: spearfishing needs a fishing licence (Fisheries Resources Act 2020, s. 20) and no fishing on scuba without a special permit (Fisheries Regulations, reg. 7). Hol Chan, Bacalar Chico, the Caye Caulker reserve, Glover's Reef and the national parks and monuments (Half Moon Caye, Laughing Bird Caye) are closed to spearfishing; Turneffe, South Water Caye and Sapodilla have zoned rules. Check current rules locally.
