Today — 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 mapSouth side of the rocky headland, rock 2–10 m out to ~900 m, shore; bass, wrasse, conger, lobster, ~2.5 km circuit. Enter ~2h before HW. 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.
Check the cam BEFORE you leave. Foam, brown/green murk, or waves washing the entry rocks = No-go. At night/in fog the cam is useless — treat it as «unknown», NOT «green».
Rules change. Exact distances from beaches/ports and seasonal closures are set by the local préfecture maritime — check its arrêté and the DIRM/OFB zone map before heading out.
Granville has rock entry points such as Pointe du Roc (sud). On the Pointe du Roc, at the mouth of the Mont-Saint-Michel bay, where the tidal ranges are among Europe's strongest. Below you'll find each spot (access, shelter and hazards) and today's forecast.
Summer (June–September) — warmer water, calmer wind. Macro-tidal (up to 8–12 m at Chausey) — the window is set by slack, not the calendar; off the Cotentin capes (Hague, Barfleur) the currents are fierce.
Channel-cold: ~9 °C in winter, ~18 °C in summer. A 7 mm hooded suit is a must. Huge tides — moving water is almost always murkier than the sheltered coves at slack.
Technical and cold: tides up to 12 m, fierce currents off the Cotentin capes. Experienced only, planning around slack; not a beginner zone.
No paid licence in Granville — but third-party (RC) insurance is MANDATORY, and since 10/01/2026 a free EU registration + catch declaration (RECFishing app) applies from age 16. Breath-hold only (no scuba), buoy mandatory, no night; sizes by coast (bar 42 Atl. / 30 Med.), grouper and corb banned in the Med. See the guide.
Leave your email — and the moment a window opens at Granville, we'll send the go / no-go verdict. Email is all we need.
Every covered town has its own live forecast, cameras and entry points. Choose where you're diving.
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PhilippinesWhat's missing? Tell us what you'd like to see — new spots, species, data or features. We read everything.
transparency ~6 m · satellite, 2 days agosatellite estimate · may differ right at the shore
