Today — sit it out — 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
Leave your email — and the moment a window opens at Perth (Cottesloe/Trigg), 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: 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 mapPiles and the rubble apron of a pier, 2–6 m, with the shade line as the structure that matters. Risk noted for Perth: high. White sharks are part of this coast's fauna.
Google MapsCoogee Beach runs 3.7 km north from Woodman Point, sheltered by a chain of reefs that includes Carnac Island; around 1 to 8 m by bathymetry.
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 as of now — 25.10.2026 12:37 (Australia/Perth)
transparency ~17 m · satellite, 2 days agosatellite estimate · may differ right at the shore
West of the harbour wall, calcarenite reef lies 100 to 300 m out and dries at low tide; the northern side has patchy reef and sand flats. The groyne is a shore dive, and a dive guide describes this busy training site as mostly sand with scattered limestone patches and seagrass; around 1 to 9.5 m by bathymetry.
Google MapsLimestone reef off Cottesloe; 3–8 m, dhufish, pink snapper, crayfish. Enter off the beach, best on clear E-wind mornings. Closed to spearfishing (see the legal notice).
Google MapsReef-protected lagoon, easy shore entry; 1–4 m, wrasse, herring, the odd dhufish outside. Marmion MP — check sanctuary lines.
Google MapsBeach ground where it turns to rock and weed, 2–6 m — the open sand is not the dive. Risk noted for Perth: high. White sharks are part of this coast's fauna.
Google MapsReef ledges off Trigg Point; 3–8 m, dhufish, crayfish, snapper. Big-swell exposed — go on light swell. Closed to spearfishing (see the legal notice).
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.
Rules change and vary BY STATE. Before heading out, check with your state's fisheries (NSW DPI, Fisheries QLD, VFA, DPIRD WA, PIRSA, NRE Tas, NT Fisheries) and the marine-park zoning map.
Perth (Cottesloe/Trigg) has rock entry points such as Mettams Pool (Trigg/North Beach), Cottesloe reef / The Slick and Trigg Point. Limestone reef straight off the city beaches: the Cottesloe slick runs 3–8 m for dhufish, pink snapper and crayfish, best on clear easterly-wind mornings, while Mettams Pool is a reef-protected lagoon in 1–4 m for an easy shore entry. Below you'll find each spot (access, shelter and hazards) and today's forecast.
Autumn (Mar–May) — warm Leeuwin, less swell; summer afternoon sea breeze.
Summer 20–23 °C — 3 mm suit; winter 18–19 °C — 5 mm. Warm Leeuwin.
Easy–moderate: clear Leeuwin water; afternoon sea breeze.
Perth (Cottesloe/Trigg) is in WA. No licence from the shore in Western Australia — but fishing from a boat needs the RFBL, and the WA dhufish sits under a demersal closure to spring 2027. Spearfishing on scuba is banned everywhere, rock lobster may never be speared, and marine-park sanctuary/green zones are no-take. See the guide for the state-by-state detail.
Cockburn Sound buoy: wave 0.7 m · 2 h ago(model: 1.8 m)
