- window
- tide
- shelter
- hazard
- access
Open reef N of Oslob, clear of Tan-awan and Sumilon, boat, 0–15 m; Bohol-Sea exposure. Coords approx.
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 mapOpen reef N of Oslob, clear of Tan-awan and Sumilon, boat, 0–15 m; Bohol-Sea exposure. 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.
Rules are set by municipalities: municipal waters 0–15 km are run by the LGUs and there is no single national registry. There is NO national by-name gear ban, but LGU/MPA bans and zoning are widespread and apparatus (compressor/scuba) hunting is barred by ordinance in many LGUs. Before heading out, check the local Municipal Fisheries Ordinance, BFAR and DENR-BMB (MPAs); in many sanctuaries any take is banned.
Oslob (Cebu) has rock entry points such as Oslob N (outside Tan-awan). Southeast Cebu on the Bohol Sea — known for its whale-shark tourism at Tan-awan. Below you'll find each spot (access, shelter and hazards) and today's forecast.
Year-round; the amihan (Nov–May) is clearest and the Tañon Strait is sheltered. Typhoons possible Jul–Dec.
Warm year-round, 26–30 °C — 1.5 mm/rashie. Clear reef walls; the Tañon Strait is sheltered and clean.
Freedive only (compressor/scuba barred by ordinance in many LGUs); no-take inside MPAs/sanctuaries. Dense sanctuary network (Moalboal/Dauin/Sumilon) — many are no-take; check the map.
In Oslob (Cebu), breath-hold spearfishing is legal nationwide in the Philippines with no licence for personal-consumption fishing (RA 8550/10654), but municipal waters (0–15 km) are governed by the local LGU — it may ban it, restrict it to zones, or ban night hunting. Any take inside an MPA/sanctuary is prohibited (Sec. 101), and compressor/scuba are barred by ordinance in many LGUs. Breath-hold only, with a marker buoy. Do not take mameng (Napoleon wrasse), whale shark, sharks & rays, manta, sawfish, sea turtle, dugong, giant clam or seahorse; release bumphead parrotfish and giant grouper. Check the local Municipal Fisheries Ordinance and see the guide.
Leave your email — and the moment a window opens at Oslob (Cebu), 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.
What's missing? Tell us what you'd like to see — new spots, species, data or features. We read everything.
transparency ~24 m · satellite, 2 days agosatellite estimate · may differ right at the shore