Dive today — 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
Leave your email — and the moment a window opens at Maqna, 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.
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: 3094 spots across 421 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 mapFringing reef by a named island — a mapped feature, not a known dive site; boat access. Spearfishing not permitted. Coords from OpenStreetMap, 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.
Saudi Arabia: the fisheries ministry (MEWA) treats spearguns as prohibited fishing gear under the Agriculture Law (Royal Decree M/64) and seizes them on both coasts — spearfishing is not permitted; the forecast is for freediving and snorkelling. Farasan Islands, Jubail wildlife sanctuary and other reserves are protected. Grouper and parrotfish are closed on the Red Sea in April–May; shrimp seasons apply.
transparency nearby ~24 m · satellite, 2 days agosatellite estimate · may differ right at the shore
Maqna has rock entry points such as Umm al-Hasani Island. Gulf of Aqaba coast with fringing reef inside NEOM; Tayeb Ism gorge is nearby. Below you'll find each spot (access, shelter and hazards) and today's forecast.
Year-round, easiest October–May; summer is very hot. A N–NW wind blows most of the year (south of ~19° N it turns SSE in winter).
22–25 °C in winter, 29–32 °C in summer; 15–25 m visibility on the fringing reefs on calm days.
Moderate: reefs drop off steeply, currents on the outer reefs; spearfishing is not permitted (MEWA) — the forecast is for freediving and snorkelling.
Maqna: Saudi Arabia: the fisheries ministry (MEWA) treats spearguns as prohibited fishing gear under the Agriculture Law (Royal Decree M/64) and seizes them on both coasts — spearfishing is not permitted; the forecast is for freediving and snorkelling. Farasan Islands, Jubail wildlife sanctuary and other reserves are protected. Grouper and parrotfish are closed on the Red Sea in April–May; shrimp seasons apply.
