- window
- tide
- shelter
- hazard
- access
Rocky reef and kelp off Onrus, west of Hermanus and clear of the Walker Bay whale sanctuary; roman, galjoen and yellowtail on clean SE water.
Google MapsTomorrow — sit it out — wave, wind and surge pounding. 🌫 Murky all week after the storm — the water isn't settling
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 mapRocky reef and kelp off Onrus, west of Hermanus and clear of the Walker Bay whale sanctuary; roman, galjoen and yellowtail on clean SE water.
Google MapsReef off Sandbaai west of Hermanus; hottentot and galjoen, sheltered from SE and outside the no-take whale sanctuary.
Google MapsVoelklip beach sits inside the Walker Bay Whale Sanctuary Zone — a permanent no-take area where all fishing incl. spearfishing is banned (DFFE MPA Regs). Atop the year-round no-take rule, Walker Bay also carries a seasonal whale-season component (~Jun–Nov / Dec) restricting vessels and in-water activity while southern rights calve in the bay. Dive/look only; hunt west of Hermanus.
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 change. Before heading out, check with the DFFE (Marine Recreational Fishing brochure / permit) and the MPA managing authority (SANParks / CapeNature / Ezemvelo KZN / ECPTA / iSimangaliso).
Hermanus has rock entry points such as Onrus, Sandbaai and Voelklip (Walker Bay sanctuary). Hermanus on Walker Bay — yellowtail, red roman and hottentot over granite reef and kelp, with the cliff-path shore dives at Gearing's Point and the New Harbour. Below you'll find each spot (access, shelter and hazards) and today's forecast.
Best clean days come after the SE wind (upwelling); cold, sharks present.
10–18 °C — 5–7 mm suit; cold Benguela, the SE upwelling drops it further.
Hard: cold Benguela, swell, white-shark presence; dive after the SE clears it.
Yes — in Hermanus, as everywhere on the mainland, you need a recreational fishing licence (DGRM); breath-hold only (no scuba), with a marker buoy and no night diving. See the guide for the details.
Leave your email — and the moment a window opens at Hermanus, 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.