Today — sit it out — wave, wind and surge pounding. 💧 Water should clear by Friday (~5d) — tentative (distant windows uncertain)
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 Boulogne-sur-Mer, 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 mapThe full spot briefing is part of the subscription: entry, bottom, hazards, tide window.
Open in the appCameras, 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».
transparency nearby ~5 m · satellite, 2 days agosatellite estimate · may differ right at the shore
Sandettie Lightship buoy: wave 1.8 m · 3 h ago(model: 3.3 m)
The full spot briefing is part of the subscription: entry, bottom, hazards, tide window.
Le Portel rip-rap, boulders 0–6 m, shore; bass and mullet along the dykes, wrasse in the holes. Water often turbid.
Google MapsReef offshore, under the Napoleonic fort, rock 1–13 m, swim out from shore; bass and mullet. Low tide only.
Google MapsRocky ledges drying at low water, 0–8 m, shore; bass on the rock, hole hunting. Sensitive to west swell.
Google MapsRocky platform between Ambleteuse and Wimereux, 2–12 m, shore entry; good bass along the rocks. ⚠️ strong current setting toward cap Gris-Nez.
Google MapsRocky point to the north, rock and kelp 1–14 m, shore; bass and mullet. Drift with the stream, never against it.
Google MapsThe full spot briefing is part of the subscription: entry, bottom, hazards, tide window.
Open in the appSOLO 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. 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.
Spearfishing in Boulogne-sur-Mer is a practical, not pretty, plan. The harbour itself is out; the usable water is on outer rip-rap and rocky ledges at Le Portel, Équihen and Pointe aux Oies. Depths are modest, but macrotidal current and suspended sediment set the risk. A sea forecast Boulogne-sur-Mer check should look for small swell, dry easterly wind and slack water. Legally, no licence or declaration is needed, but insurance is mandatory and hunting is breath-hold only.
Stay outside port limits and channels. If visibility is poor or the tide turns, stop early.
| Spot | Type | Depth | Level | Access | Notes |
|---|---|---|---|---|---|
| Le Portel outer rip-rap | Harbour-side boulders | 0 to 6 m | Intermediate | Shore entry outside port limits | Bass and mullet along blocks, wrasse in holes. Often turbid. |
| Équihen ledges | Drying rocky ledges | 0 to 8 m | Intermediate | Shore entry | Bass on rock and hole hunting; sensitive to west swell. |
| Pointe aux Oies | Rock platform | 2 to 12 m | Advanced local | Shore entry | Good bass potential, but strong current sets toward cap Gris-Nez. |
This is macrotidal Channel water. Slack matters, and so does visibility after calm weather. A dry easterly can help; west swell quickly dirties the ledges. For freediving Boulogne-sur-Mer, keep the plan short, carry insurance, use apnea only, stay out of ports and bathing zones, and check the local prefectural rules before relying on any ledge.
No, but civil-liability insurance is mandatory.
No. Port limits and channels are off-limits.
Pointe aux Oies, with current setting toward cap Gris-Nez.
Bass, mullet and wrasse.
No. Spearfishing in France is breath-hold only.
