Guánica spearfishing forecast — wind, swell, visibility, tides & live cameras

Guánica · Puerto Rico
5.3
wave 0.6 m
visibility3m

Today — right on the edgewave, wind and visibility.

Sources: IPMA · NDBC · Copernicushigh confidence · data 15:02

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 15:02
Guánica — solo, off the rocks
BORDERLINE
caution — solo off the rocks is risky, check on site · strong wind 17 km/h, gusts 40 — caution
wave 0.6 mwind 17, gusts 40 km/hvisibility ~5 mwindow 15:00–21:00
today, best window 18:00–21:00
fish · Visibility 5 m · Water 29.3°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.

Wednesday · today2026-07-22
06:0219:05 · first quarter
09:00 20:00 · 0.2 m
Hours (06→20)
15
18
Day's trends
Tide0.44 m
Wave0.66 m
Wind14 km/h
Water29 °C
fish activity: moonset 00:16 · moderate · moon underfoot 06:50 · high · moonrise 13:35 · moderate · moon overhead 19:20 · high
Conditions window15:00–18:00
caution — solo off the rocks is risky, check on site fish
Hs 0.60 mperiod 4.1 s head-onwind 18→41surge 0.7viz 3 m
0.60 mup to ~1.20 · 128° head-on
4.1 sswell moderate
18→41gusts 41 km/h
0.7weak surge
0.19m/s
3 mrecent swell
29.4°C5 mm + hood
▲20:00tide rising
Atmosphere5 kmprecip 0.6 mm
lowoff the lunar peaks
  • wind-wave — choppy surface
  • strong wind 18 km/h, gusts 41 — caution
  • dawn/dusk
confidence mediumtwilight
Open the seafloor map with entry points

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

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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
Cayo Don LuisGuánica
borderline
exposed head-on to the swell today
window
tide
shelter
hazard
access

Cay & patch reef, 2–8 m — legal (outside reserves). Lionfish, lobster (by hand only), snapper.

Google Maps
Gilligan's Island / Cayo AuroraGuánica
borderline
exposed head-on to the swell today
window
tide
shelter
hazard
access

Mangrove cay/reef 2–8 m — legal, beginner; snapper, reef fish, lobster (by hand). Estimated.

Google Maps
Guánica East shelf / «Jorobado»Guánica
borderline
exposed head-on to the swell today
window
tide
shelter
hazard
access

Shelf-edge wall, 15–40 m — legal (outside reserves). Cubera snapper, grouper, pelagics.

Google Maps
Guánica Wall / La ParedGuánica
borderline
exposed head-on to the swell today
window
tide
shelter
hazard
access

Shelf wall 15–45 m+ — legal, advanced; pelagics and grouper on the edge. Approximate.

Google Maps
Playa Santa / Cayo Real reefGuánica
borderline
exposed head-on to the swell today
window
tide
shelter
hazard
access

Reef & seagrass, 3–12 m — legal (outside reserves). Hogfish, lobster (by hand only), snapper.

Google Maps
Punta BallenaGuánica
borderline
exposed head-on to the swell today
window
tide
shelter
hazard
access

Reef/point 3–15 m — legal, intermediate; grouper, snapper. Estimated.

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
  • mutton snapper
    5–25 m · on the current by structure · dusk/night
    Mutton snapper on the sand-reef edge — spooky, long float line & patience, best at dusk. ⚠️ Closed 1 Apr–30 Jun (federal, 50 CFR 622).
  • yellowtail snapper
    3–25 m · on the current by structure · dusk/night
    Min 12″ (30 cm, federal). Small midwater snapper over the reef; comes up on a drift, best at dusk.
  • red hind
    8–30 m · on the current by structure · daytime
    Red hind in reef holes, by day. ⚠️ Grouper closed 1 Feb–30 Apr + red hind 1 Dec–last day Feb (federal) → target May–Nov only. Vulnerable, take sparingly.
  • crevalle jack
    1–20 m · on the current by structure · daytime
    Crevalle jack on the reef edge on the current, by day — quick, a strong fighter.
  • parrotfish
    2–25 m · on the current by structure · daytime
    ❓ Not regulated in Reglamento 7949, but a herbivorous reef-cleaner — conservatively DON'T shoot it.
  • lionfish
    3–40 m · on the current by structure · daytime
    Invasive — culling is ENCOURAGED year-round (MTIASIC/WECAFC). Venomous spines — careful; flesh edible.
off season: hogfish (Dec Jan Feb Mar Apr May Jun) · cero mackerel (Nov Dec Jan Feb Mar Apr)
Law
  • 🚫 Nassau grouper (cherna) and goliath (guasa), plus queen conch (carrucho) — federal no-take. Lobster may NOT be speared (Art. 8.18) — hand/trap only.
  • 🚫 Sea turtles, marine mammals and Acropora corals — no-take (ESA). Spearfishing is banned in marine reserves (Tres Palmas, Canal Luis Peña), bathing zones and within 100 ft of shore.
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 · Guánica

Spearfishing in Guánica: spots, seasons and rules

Updated 2026-07-09 · By Oleksandr, spearfisher

Guánica offers the broadest south-coast mix: Gilligan's Island and Cayo Don Luis in 2-8 m water, Punta Ballena and Playa Santa on reef and seagrass, then La Pared and the east shelf in advanced depths. Calm mangrove water does not make the wall easy. Use small south swell, early light and a clear boat plan. DRNA rules require a recreational licence for visitors too. Keep the spear more than 30 m from the coast, hunt on breath-hold only, and reserve night work for lionfish. If a reserve boundary is uncertain, treat it closed.

TL;DR

  • Guánica ranges from shallow mangrove cay reef to the deep south wall, so match the spot to your diving level.
  • A DRNA recreational licence is required; spearfishing is breath-hold, with no scuba assistance.
  • Natural-reserve uncertainty should fail closed. Move outside the managed area before loading gear.

Best spearfishing spots in Guánica

Gilligan's Island is the shallow start. Punta Ballena and Playa Santa are the mixed reef options. Guánica Wall is advanced water for trained partners, not a fallback when the bay is crowded.

SpotTypeDepthLevelAccessNotes
Gilligan's Island / Cayo AuroraMangrove cay and reef2-8 mBeginner with supervisionShort boat runSnapper, reef fish and hand-taken lobster where legal. Watch swimmers and small boats.
Punta BallenaPoint reef3-15 mIntermediateShore or boatA reef edge for legal grouper and snapper in clean water. South swell reduces exit safety.
Guánica Wall / La ParedShelf wall15-45 m+AdvancedBoatPelagics and grouper on the edge. Use only with a trained buddy, float and settled sea.

What conditions work?

The south coast likes low S to SW swell and light morning wind. If the bay turns cloudy or the wall has current, stay shallow or stop.

What are the legal basics?

Carry a DRNA recreational licence. No scuba-assisted spearfishing. Keep more than 30 m from shore, leave Nassau and goliath grouper, parrotfish and queen conch alone, and handle reserves fail-closed.

FAQ

Is Guánica beginner-friendly?

Only the shallow cay and bay options are beginner-friendly in calm water.

Do tourists need a licence?

Yes. DRNA licensing applies to tourists.

Can you spear lobster?

No. Lobster is hand-only where legal.

Can you hunt at night?

Night spearfishing is limited to lionfish.

What if a reserve line is vague?

Treat it as closed and move outside.

Sources

Nearby towns

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