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Reef, boat access, depth not given by the source. No hunting — Dar es Salaam Marine Reserves (approx. boundary). Reef mapped in OpenStreetMap; no diver reports — unverified.
Google MapsToday — right on the edge — wave, wind and surge pounding.
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 Dar es Salaam, 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 mapReef, boat access, depth not given by the source. No hunting — Dar es Salaam Marine Reserves (approx. boundary). Reef mapped in OpenStreetMap; no diver reports — unverified.
Google MapsReef, boat access, depth not given by the source. No hunting — Dar es Salaam Marine Reserves (approx. boundary). Reef mapped in OpenStreetMap; no diver reports — unverified.
Google MapsWreck, boat access, about 15 m (source). Position from a dive-site directory, approximate.
Google MapsReef, boat access, depth not given by the source. No hunting — Dar es Salaam Marine Reserves (approx. boundary). Reef mapped in OpenStreetMap; no diver reports — unverified.
Google MapsReef, boat access, depth not given by the source. Close to the Dar es Salaam Marine Reserves; boundary not verified — treat as no-take. Reef mapped in OpenStreetMap; no diver reports — unverified.
Google MapsReef, boat access, depth not given by the source. No hunting — Dar es Salaam Marine Reserves (approx. boundary). Reef mapped in OpenStreetMap; no diver reports — unverified.
Google MapsWreck, boat access, about 4 m (source). Position from a dive-site directory, approximate.
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.
Tanzania: operators report that speargun fishing is banned on the mainland (Fisheries Act 2003 / Regulations 2009) and that Zanzibar issues sport-spearfishing licences only through registered operators. The acts could not be read — treat this as unconfirmed and check with the Fisheries Division. Marine parks and reserves are closed to hunting. Night rules not verified.
Dar es Salaam has rock entry points such as Bongoyo Reef, Mbudya Reef and Pangavini Reef. Dar es Salaam faces the Zanzibar Channel. Below you'll find each spot (access, shelter and hazards) and today's forecast.
November–March is calmest; June–October brings the SE wind.
As on Zanzibar, with more river turbidity after the long rains (March–May).
All marks are boat trips from Msasani; most reefs are inside the Dar es Salaam Marine Reserves.
Dar es Salaam: Tanzania: operators report that speargun fishing is banned on the mainland (Fisheries Act 2003 / Regulations 2009) and that Zanzibar issues sport-spearfishing licences only through registered operators. The acts could not be read — treat this as unconfirmed and check with the Fisheries Division. Marine parks and reserves are closed to hunting. Night rules not verified.