São Francisco do Sul · Brazil

2.5

wave 1 m head-on

visibility1m

Today — sit it out — wave, wind and visibility.

Sources: INMET · buoys · Open-Meteo · Copernicus — high confidence · data 00:13

Sources & confidence

Sources: INMET · buoys · Open-Meteo · Copernicus
Method: spearo sea-state engine: consensus of up to 6 models + satellite clarity (ZSD) + buoy-bias checks
Freshness: Re-read every hour, per coast

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.

How we score the water

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.

Swell & wave memory: Height, period and direction of the swell, plus the wake of recent storms — an old storm still stirs the water, and the engine remembers.
Wind & gusts: Speed and gusts, hour by hour — wind speed and an onshore push chop the surface and cut visibility.
Tide phase: Timing and range of the tide, calibrated per coast — big spring tides pull the verdict toward caution.
Water temperature: Sea-surface temperature — sharply cold water vetoes a green verdict.
Currents & outflow: Direction and drift of the current — it pushes you, and it drags turbid coastal water across where you dive.
Rain runoff & air clarity: Rain muddies the water inshore through land runoff, while fog and haze cut visibility at the surface.
Coast shape & exposure: How the coast faces the swell — a sheltered cove keeps the water clean; an exposed, head-on point takes a penalty.

Safety gates

Thunderstorm forecast — an instant red, no exceptions.
An official warning (MeteoAlarm / IPMA) — yellow, or red for the higher ranks.
Missing input data — a would-be green is capped to yellow rather than overstated.
Strong disagreement between forecast models — a green day is pulled back to yellow.
Night hours — where night spearfishing is banned by law the window is forced red; where it is legal (Australia outside NSW, New Zealand, South Africa) it is capped at yellow, never green.

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

Entry points with coordinates

Seabed relief — promising ground

This verdict — in your pocket. Open the app for the week's window.

Google Play — QR code — point your camera

0 m

Surface

Wind, wave and the swell windows — when to go and the best hours.

spearo.app

INMET no dataupdated 00:13

Open water — Ilha da Paz – Ilha do Pirata — solo, off the rocks

DON'T GO

don't go · wave 1.0 m + swell period 6 s

wave 1 m head-onwind 9 km/hvisibility ~1 m

today, best window 06:00–09:00

fish · Visibility 1 m · Water 21.6°C

confidence low · verdict for the selected day

Whole week — tap a day. is driving swell right now.

Solo risk: carry a float · tell someone your plan and exit time · doubt = don't go. A model-based planner; the call is made on site.

Selected day

Windows, hours
and the day's trends.

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.

Sunday · today2026-10-25

05:29–18:26 · full moon

▲ 01:00▼ 07:00▲ 13:00▼ 20:00mid-range tides · 1.2 m

Hours (06→20)

Day's trends

Tide0.42 m

Wave0.98 m

Wind2 km/h

Water21 °C

fish activity: moon overhead 00:00 · high · moonset 04:45 · moderate · moon underfoot 11:20 · high · moonrise 18:07 · moderate

Conditions window06:00–09:00

don't go fish

Hs 0.96 m · roughperiod 6.1 s head-onwind 9→19surge 0.2viz 1 m

0.96 mrough · up to ~1.92 · 91° head-on

6.1 sswell moderate

9→19gusts 19 km/h

0.2weak surge

0.47m/s

1 mrecent swell

21.6°C5 mm + hood

▲13:00tide turn near

Atmosphere6 kmovercast

lowoff the lunar peaks

wave 1.0 m + swell period 6 s
steep wind-wave — choppy surface, careful on entry
first hours of the flood — fish moving in

confidence lowtwilight

Open the seafloor map with entry points

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Where to get in
off the rocks.

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 map

Praia da EnseadaCoast — Praia da Enseada

borderline

exposed head-on to the swell today

window: —

Rocky headlands at the ends of the town's main beach, calm water, 0–10 m, from shore. SC: breath-hold only, buoy required, nothing within 50 m of the beach. Coords approx.

Google Maps

Ilha MandigitubaOpen water — Ilha da Paz – Ilha do Pirata

dangerous

Pro · subscribers

exposed head-on to the swell today

window: —

The full spot briefing is part of the subscription: entry, bottom, hazards, tide window.

Open in the app

Ilha VelhaOpen water — Ilha da Paz – Ilha do Pirata

dangerous

Pro · subscribers

exposed head-on to the swell today

window: —

The full spot briefing is part of the subscription: entry, bottom, hazards, tide window.

Open in the app

Ilha da PazOpen water — Ilha da Paz – Ilha do Pirata

dangerous

exposed head-on to the swell today

window: —

Island at the mouth of Babitonga Bay, with a lighthouse and rocky shores, boat only (departures from Praia da Enseada). SC: breath-hold only and buoy required. Coords approx.

Google Maps

Ilha do PirataOpen water — Ilha da Paz – Ilha do Pirata

dangerous

Pro · subscribers

exposed head-on to the swell today

window: —

The full spot briefing is part of the subscription: entry, bottom, hazards, tide window.

Open in the app

Parcel da CorvinaOpen water — Ilha da Paz – Ilha do Pirata

dangerous

Ultra · subscribers

exposed head-on to the swell today

window: —

The full spot briefing is part of the subscription: entry, bottom, hazards, tide window.

Open in the app

Ponta da Tartaruga (Enseada)Open water — Ilha da Paz – Ilha do Pirata

dangerous

Ultra · subscribers

exposed head-on to the swell today

window: —

The full spot briefing is part of the subscription: entry, bottom, hazards, tide window.

Open in the app

SOLO 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.

What's in season,
what the law says.

In season now

fat snook
Centropomus parallelus · 0–15 m · legal
State closed seasons: BA 15 May–31 Jul; ES 1 May–30 Jun; PR 1 Nov–31 Dec; SP — none.
common snook
Centropomus undecimalis · 0–15 m · legal
State closed seasons: BA 15 May–31 Jul; ES 1 May–30 Jun; PR 1 Nov–31 Dec; SP — none.
dusky grouper
Epinephelus marginatus · 8–40 m · ⚠️ closed season/limit
⚠️ Closed season 1 Nov–28 Feb (national, Port. Interm. 41/2018). Slot 47–73 cm — a minimum AND a maximum (art. 3º). Vulnerable — go easy.
gag grouper
Mycteroperca microlepis · 5–40 m · legal
black grouper
Mycteroperca bonaci · 5–40 m · 🚫 no-take
🚫 On the 2026 national list (Portaria GM/MMA 1.667/2026) — integrally protected by 1.666/2026, art. 3º: taking, transporting, keeping and selling are prohibited. Do not shoot.
comb grouper
Mycteroperca acutirostris · 3–30 m · 🚫 no-take
🚫 On the 2026 national list (Portaria GM/MMA 1.667/2026) — integrally protected by 1.666/2026, art. 3º: taking, transporting, keeping and selling are prohibited. Do not shoot.
snowy grouper
Hyporthodus niveatus · 20–60 m · 🚫 no-take
🚫 On the 2026 national list (Portaria GM/MMA 1.667/2026) — integrally protected by 1.666/2026, art. 3º: taking, transporting, keeping and selling are prohibited. Do not shoot.
yellowedge grouper
Hyporthodus flavolimbatus · 30–80 m · 🚫 no-take
🚫 On the 2026 national list (Portaria GM/MMA 1.667/2026) — integrally protected by 1.666/2026, art. 3º: taking, transporting, keeping and selling are prohibited. Do not shoot.
greenbeak parrotfish
Scarus trispinosus · 2–25 m · 🚫 no-take
🚫 On the 2026 national list (Portaria GM/MMA 1.667/2026) — integrally protected by 1.666/2026, art. 3º: taking, transporting, keeping and selling are prohibited. Do not shoot.
Brazilian agile parrotfish
Sparisoma amplum · 2–25 m · 🚫 no-take
🚫 On the 2026 national list (Portaria GM/MMA 1.667/2026) — integrally protected by 1.666/2026, art. 3º: taking, transporting, keeping and selling are prohibited. Do not shoot.
cubera snapper
Lutjanus cyanopterus · 5–40 m · 🚫 no-take
🚫 On the 2026 national list (Portaria GM/MMA 1.667/2026) — integrally protected by 1.666/2026, art. 3º: taking, transporting, keeping and selling are prohibited. Do not shoot.
grey triggerfish
Balistes capriscus · 5–40 m · 🚫 no-take
🚫 On the 2026 national list (Portaria GM/MMA 1.667/2026) — integrally protected by 1.666/2026, art. 3º: taking, transporting, keeping and selling are prohibited. Do not shoot.
bluefish
Pomatomus saltatrix · 0–20 m · legal
whitemouth croaker
Micropogonias furnieri · 2–25 m · legal
black drum
Pogonias courbina · 2–25 m · 🚫 no-take
🚫 On the 2026 national list (Portaria GM/MMA 1.667/2026) — integrally protected by 1.666/2026, art. 3º: taking, transporting, keeping and selling are prohibited. Do not shoot.
lebranche mullet
Mugil liza · 0–12 m · ⚠️ closed season/limit
Managed by annual quotas/seasons. Min 35 cm; estuary bars may be restricted in season.
king mackerel
Scomberomorus cavalla · 2–30 m · legal
serra Spanish mackerel
Scomberomorus brasiliensis · 1–25 m · legal
mahi-mahi
Coryphaena hippurus · 0–30 m · legal
greater amberjack
Seriola dumerili · 5–40 m · legal
crevalle jack
Caranx hippos · 0–25 m · legal
silver porgy
Diplodus argenteus · 0–15 m · legal
lionfish
Pterois volitans · 3–40 m · invasive — target
Invasive, spreading in NE Brazil. Culling encouraged. Venomous spines — careful; flesh edible.
Atlantic goliath grouper
Epinephelus itajara · 1–30 m · 🚫 no-take
🚫 CR on the 2026 national list (Portaria GM/MMA 1.667/2026) — integrally protected by art. 3º of Portaria GM/MMA 1.666/2026; moratorium since 2002, indefinite. Do not take, release it. Fine R$700–100,000 + gear seizure.

Law

✓A is REQUIRED, issued on gov.br by the . There are exactly two sub-categories and what chooses between them is WHETHER YOU USE A BOAT: from the shore — Desembarcada, R$ 20/year; from a boat — Embarcada, R$ 60/year. There is no «Subaquática» sub-category (Decreto 8.425/2015, art. 3º § 1º II). Exempt: under-18 accompanied, men 65+ and women 60+.
✓Apnea only: «Fica proibido o uso de aparelhos de respiração artificial durante a prática da pesca subaquática» (Portaria SAP/MAPA 616/2022, art. 4º § 3º). The vessel supporting the fishing may not even CARRY cylinders, a compressor or any underwater breathing apparatus — except where the maritime authority requires it (§ 4º).
✓Goliath grouper (mero, Epinephelus itajara): CR on the 2026 national list (Portaria GM/MMA 1.667/2026) and integrally protected by art. 3º of Portaria GM/MMA 1.666/2026; the moratorium dates from 2002 and is renewed. Never a legal target — capture, transport or sale is an environmental offence.
✓Closed seasons: true grouper 1 Nov–28 Feb nationwide (slot 47–73 cm); sirigado/badejo/caranha 1 Aug–30 Sep; bluefish in the S/SE 1 Dec–31 Mar; robalo — ES 1 May–30 Jun, BA 15 May–31 Jul; lobster 1 Nov–30 Apr, BUT WHILE DIVING IT IS CLOSED ALL YEAR (Portaria SAP/MAPA 221/2021, art. 6º III). Mind minimum sizes.
✓The speargun and the arbalete are expressly permitted amateur gear: «espingarda de mergulho ou arbalete com qualquer tipo de propulsão e qualquer tipo de seta» (Portaria SAP/MAPA 616/2022, art. 4º IV). The act sets NO limit on power, length, tip or reel.
✓Selling the catch is prohibited: «É vedada a comercialização do recurso pesqueiro capturado» (Portaria SAP/MAPA 616/2022, art. 6º). Nor may you store or carry the fish in a way that hinders inspection — in steaks, fillets or headless (art. 12).
✓The amateur sea limit is 15 kg plus one specimen (Portaria SAP/MAPA 616/2022, art. 8º); in inland and estuarine waters, 10 kg plus one (art. 7º). THIS IS THE FEDERAL FLOOR: inside a protected unit that unit's own regime applies. In the RESEX Marinha do Arraial do Cabo it is 10 kg plus one and no more than 100 kg per boat per day, amateur spearfishing is open only to «Beneficiários C» on an ICMBio authorisation, twelve named places are closed and you must stay 300 m off them (Portaria ICMBio 895/2020, items 63, 65 and 69).
✓Licence and reporting: carry personal ID and a valid Licença de Pescador Amador ou Esportivo under the RGP, and it does NOT displace state and municipal rules (Portaria SAP/MAPA 616/2022, art. 17). Every fishing day is reported on the

Safety protocol

Sets: watch the wave trains ≥15 min before entering; Hmax ≈ 2×Hs, the wash can run 50 m past the foam line. A lull >10 min with period >12 s = a big set «overdue», do NOT enter; enter right after a full set passes and re-check at minute 30.
Exit FIRST: find your exit AND a backup before entering. On a rocky/boulder shore a 0.5 m rise in swell can make the exit impossible — getting pinned/unable to climb out is the main killer.
Headland rip: prominent points often have a permanent topographic rip regardless of the model — locate it, enter/exit on the windward side, never swim against it.
Cold: wetsuit per the SST chip; the first shiver = a metabolic surge and a drop in breath-hold → get out at the first steady shiver. Cap the session at 45–60 min below 15 °C.
Solo discipline: buoy up; tell someone the spot and exit time; conservative breath-hold (never push it in cold/murky/surfy water); visibility <3 m — don't enter.
Afternoon wind: on many coasts the wind builds from midday — plan to be out of the water by midday; the chop builds — get out.
UV 11:00–15:00 (UVI ≥6): sunscreen and cover up on the surface interval.
Solo is a fundamental risk (hypoxic blackout with no buddy). Any doubt = No-go.

FAQ — spearfishing in São Francisco do Sul

Where can I spearfish in São Francisco do Sul?

São Francisco do Sul has rock entry points such as Praia da Enseada, Ilha da Paz and Ilha do Pirata. An island at the far north of Santa Catarina with granite headlands and coves at Praia da Enseada and Praia Grande. Below you'll find each spot (access, shelter and hazards) and today's forecast.

When is the best season in São Francisco do Sul?

Best late spring to autumn (Nov–Apr), when the subtropical south calms; winter brings cold fronts and swell.

How cold is the water in São Francisco do Sul?

Cooler subtropical water, ~18–24 °C — 3 mm most of the year, 5 mm in winter. Clarity varies with swell and river runoff.

Is São Francisco do Sul good for a beginner?

Moderate: exposed subtropical coast with rock points and islands; pick the calm windows between cold fronts.

Do I need a licence in São Francisco do Sul?

Yes — in São Francisco do Sul you need the Licença de Pesca Amadora (gov.br portal; the category follows boat use, per the MPA: «desembarcada» R$ 20/yr when you enter from shore, «embarcada» R$ 60/yr with a boat — Portaria 616/2022 itself sets no categories; 65+/pensioners exempt). Breath-hold only (no scuba tank — art. 4º §3º), licence on you (art. 17); take home at most 15 kg + 1 fish and never filleted or headless (arts. 8º and 12); don't sell the catch (art. 6º). A marker buoy is mandatory in Santa Catarina (IN MMA 21/2005, art. 5º) — there is no federal buoy rule. Goliath grouper (mero) is full no-take, dusky grouper has a 1 Nov–28 Feb closed season, badejo-mira and peroá close on 25/10/2026 (Portaria GM/MMA 1.666/2026, art. 12) and taking lobster while diving is banned all year (Portaria SAP/MAPA 221/2021, art. 6º III). See the guide.

Full guide: spearfishing in Southern Brazil →

Surface

Windows, hours
and the day's trends.

Spots in Brazil

🇧🇷Brazil

Nearby towns

Paraná Coast

South Coast

Help us make it better

The water column

A marine instrument,
go / no-go for solo hunting.

The seabed

The forecast is the plan.
The call is on the rock.

Where to get in
off the rocks.

Surfacing

What's in season,
what the law says.

FAQ — spearfishing in São Francisco do Sul

São Paulo Coast

Rio de Janeiro Coast

Espírito Santo Coast

São Francisco do Sul spearfishing forecast — wind, swell, visibility, tides & live cameras

Windows, hours and the day's trends.

Get the go / no-go verdict for São Francisco do Sul by email

Spots in Brazil

🇧🇷Brazil

Nearby towns

Paraná Coast

South Coast

Help us make it better

A marine instrument, go / no-go for solo hunting.

The forecast is the plan.The call is on the rock.

Where to get in off the rocks.

What's in season, what the law says.

FAQ — spearfishing in São Francisco do Sul

São Paulo Coast

Rio de Janeiro Coast

Espírito Santo Coast

Windows, hours
and the day's trends.

A marine instrument,
go / no-go for solo hunting.

The forecast is the plan.
The call is on the rock.

Where to get in
off the rocks.

What's in season,
what the law says.