San Antonio Oeste spearfishing forecast — wind, swell, visibility, tides & live cameras

San Antonio Oeste · Argentina
5.4
wave 0.4 m
visibility5m

Today — right on the edgewave, wind and visibility.

Sources: IPMA · NDBC · Copernicushigh confidence · data 16:44

Sources & confidence

Sources
IPMA · NDBC buoys · Copernicus Marine
Method
Model consensus, read per window
Freshness
Re-read every hour, per coast

Compiled by the spearo sea-state engine

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 — forced red; the window is closed after dark.

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.

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0 m

Surface

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

spearo.app
calmupdated 16:44
San Antonio Oeste — solo, off the rocks
BORDERLINE
caution — solo off the rocks is risky, check on site · wind-wave — choppy surface
wave 0.4 mwind 19, gusts 30 km/hvisibility ~7 mwindow 15:00–21:00
today, best window 15:00–18:00
fish · Visibility 7 m · Water 9.6°C
confidence medium · 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.

Wednesday · today2026-07-22
08:3418:17 · first quarter
05:00 12:00 18:00mid-range tides · 5.8 m
Hours (06→20)
15
18
Day's trends
Tide-2.67 m
Wave0.36 m
Wind18 km/h
Water10 °C
fish activity: moonset 02:44 · moderate · moon underfoot 07:40 · high · moonrise 12:40 · moderate · moon overhead 20:10 · high
Conditions window15:00–18:00
caution — solo off the rocks is risky, check on site fish
Hs 0.36 mperiod 7.3 swind 19→30surge 0.2viz 5 m
0.36 mup to ~0.72 · 130° at an angle
7.3 sswell moderate
19→30gusts 30 km/h
0.2weak surge
0.17m/s
5 mrecent swell
9.6°Cthicker suit + hood
▲18:00tide turn near
Atmosphere66 kmovercast
lowoff the lunar peaks
  • wind-wave — choppy surface
  • wind 19 km/h
  • flood toward high water
confidence mediumtwilight
Open the seafloor map with entry points

Your best window — with you. Forecast in your pocket.

Android: the public release is in Google Play review — leave your email and we'll send beta access today.

Android beta — QR code
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−10 m

The water column

Visibility and what drives it — post-storm clearing, river plume, temperature and the thermocline.

What it is

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

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 spots
−20 m

The seabed

Relief and bottom type, tides, and the depths of each spot.

On the rock

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

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.

Entry points

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
Banco ReparoSan Antonio Oeste
borderline
exposed head-on to the swell today
window
tide
shelter
hazard
access

Shallow rocky bank in the bay; besugo, cabrilla. Exposed on extreme low tide. Slack only.

Google Maps
Restinga Bahía San AntonioSan Antonio Oeste
borderline
exposed head-on to the swell today
window
tide
shelter
hazard
access

Bay restingas; salmón/mero/cabrilla. Town-level, coast-snap pending. Macro-tidal currents — slack only.

Google Maps
Restinga Los ÁlamosSan Antonio Oeste
borderline
exposed head-on to the swell today
window
tide
shelter
hazard
access

Coastal restinga by the SAO town; rock 2–6 m with salmón/mero. Macro tide → slack. Town-level.

Google Maps
Restinga Punta Delgada (Bahía San Antonio)San Antonio Oeste
borderline
exposed head-on to the swell today
window
tide
shelter
hazard
access

Bay restinga; salmón, mero, cabrilla, sargo. San Matías macro tide (~7 m) → **slack only**, strong currents.

Google Maps

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.

One morning glance — and you know.

Android: the public release is in Google Play review — leave your email and we'll send beta access today.

Android beta — QR code
point your camera

Surfacing

Cameras, map and reference — to hand as you come up.

Live cameras, map & reference
Open the seafloor map →
Reference

What's in season,
what the law says.

In season now
  • amberjack (sea salmon)
    Seriola lalandi · 3–30 m · legal
    Chubut: free permit + Valdés cupo (2 fish >5 kg / 4 fish <5 kg). Respect it.
  • grouper
    Acanthistius spp. · 3–30 m · legal
  • yellowtail
    Seriola lalandi · 3–30 m · legal
  • sea bass (chernia)
    Polyprion americanus · 8–40 m · legal
  • flathead
    Percophis brasiliensis · 2–25 m · legal
  • croaker
    Micropogonias furnieri · 1–20 m · ❓ consulta AUNAP
    ⚠️ Buenos Aires: spearfishing is NOT regulated (grey zone). No published size or quota — we do not promote «go and shoot» on natives until the province text is verified. Check first.
Law
  • 🚫 All National Parks (Islote Lobos, Monte León, PN Tierra del Fuego; APN Res 199/2024) — spearfishing banned. Península Valdés / Puerto Pirámides — whale sanctuary: no-take.
  • ⚠️ Buenos Aires: spearfishing not regulated (grey zone) — do not hunt natives until the province text is verified. Río Negro Ley 5.706/2024: apnea only, no night.
  • Sea lions, penguins, cetaceans and seabirds — protected; do not disturb.
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.
Local guide · San Antonio Oeste

Spearfishing in San Antonio Oeste: spots, seasons and rules

Updated 2026-07-09 · By Oleksandr, spearfisher

Spearfishing in San Antonio Oeste is a tide-table discipline. The Golfo San Matías can give clear, relatively mild water and rock for sea salmon, mero, besugo and cabrilla, but Bahía San Antonio has a huge tidal range. The ebb can expose kilometres of intertidal ground; the flood pushes hard through channels. This is Río Negro province, with Ley 5.706/2024 as the local frame: apnea only and no night diving.

TL;DR

  • San Antonio Oeste is a Río Negro, Bahía San Antonio restinga plan with clear-water potential.
  • The macro tide is the main hazard, with spring ranges around 7 m and strong channel flow.
  • Plan Bahía San Antonio, Punta Delgada, Banco Reparo and Los Álamos around slack only.

Best spearfishing spots in San Antonio Oeste

These are bay-restinga spots. Judge them by current and return route, not by shore distance.

SpotTypeDepthLevelAccessNotes
Restinga Bahía San AntonioBay rock reefsShallow to mid-depthIntermediateShore entry timed for returnSea salmon, mero and cabrilla are noted. Dive near slack.
Restinga Punta Delgada (Bahía San Antonio)Rock point in the bayShallow to mediumIntermediate to advancedTide margin requiredSea salmon, mero, cabrilla and sargo appear, with strong macro-tide current.
Banco ReparoShallow rock bankVery shallow on big ebbsLocal intermediateExposed on exceptional low tidesBesugo and cabrilla are mentioned. Not a place to chase a retreating tide.
Restinga Los ÁlamosCoastal rock near town2-6 m in the local noteIntermediateFrom SAO coastAccessible rock for sea salmon and mero, still current-prone.

San Antonio Oeste rules and tide

Río Negro is the correct authority, not Chubut or Buenos Aires. Ley 5.706/2024 points to apnea-only spearfishing and no night diving. The main operational risk is the San Matías macro tide: banks dry, channels fill and the return can become a swim against heavy flow. Use a tide table, enter near slack and cut the session early if the water starts moving.

FAQ

Where can you spearfish in SAO?

Bahía San Antonio restinga, Punta Delgada, Banco Reparo and Los Álamos.

What tide works?

Slack tide. Avoid mid-run macro tide.

Which province regulates it?

Río Negro, under the local law and current provincial rules.

What species are mentioned?

Sea salmon, mero, besugo, cabrilla and sargo.

Can beginners go?

Only with local help and small-current windows; the tide is serious.

Sources

Nearby towns

Coming soon

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