Grand Baie spearfishing forecast — wind, swell, visibility, tides & live cameras

spearo.app / Mauritius / Grand Baie
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◈Grand Baie · Mauritius
5.2
wave 1.3 m
visibility~2m

Marginal

Today — right on the edge — wave, wind and visibility.

Sources: Open-Meteo · Copernicus — high confidence · data 19:23

Sources & confidence

Sources
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.

01
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.
02
Wind & gusts
Speed and gusts, hour by hour — wind speed and an onshore push chop the surface and cut visibility.
03
Tide phase
Timing and range of the tide, calibrated per coast — big spring tides pull the verdict toward caution.
04
Water temperature
Sea-surface temperature — sharply cold water vetoes a green verdict.
05
Currents & outflow
Direction and drift of the current — it pushes you, and it drags turbid coastal water across where you dive.
06
Rain runoff & air clarity
Rain muddies the water inshore through land runoff, while fog and haze cut visibility at the surface.
07
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.

Entry pointsNo-take zones

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.

Download on theApp StoreGET IT ONGoogle Play
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point your camera
0 m

Surface

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

spearo.app
updated 19:23
Grand Baie — solo, off the rocks
BORDERLINE
caution — solo off the rocks is risky, check on site · wave 1.3 m + swell period 7 s
wave 1.3 mwind 30, gusts 43 km/hvisibility ~2 mwindow 06:00–21:00
today, best window 06:00–09:00
fish · Visibility 2 m · Water 24.7°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.

Tuesday · today2026-10-13
05:41–18:11 · waxing crescent
▲ 02:00▼ 07:00▲ 13:00▼ 20:00 · 0.6 m
Hours (06→20)
06
09
12
15
18
Day's trends
Tide0.66 m
Wave1.28 m
Wind28 km/h
Water25 °C
fish activity: moon underfoot 01:30 · high · moonrise 07:08 · moderate · moon overhead 14:00 · high · moonset 20:47 · moderate
Conditions window06:00–09:00
caution — solo off the rocks is risky, check on site fish
Hs 1.26 m · roughperiod 6.5 swind 30→43surge 0.8viz 2 m
1.26 mrough · up to ~2.52 · 79° at an angle
6.5 sswell moderate
30→43gusts 43 km/h
0.8weak surge
0.19m/s
2 mrecent swell
24.7°C5 mm + hood
▲13:00tide turn near
Atmosphere8 kmprecip 0.2 mm
moderatemoonrise
  • wave 1.3 m + swell period 7 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 →
Coming soon

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Leave your email — and the moment a window opens at Grand Baie, we'll send the go / no-go verdict. Email is all we need.

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More spots

Spots in Mauritius

🇲🇺Mauritius

Mauritius map →

Nearby towns

  • Cap Malheureux
  • Trou aux Biches
  • Poste Lafayette
  • Belle Mare
  • Trou d'Eau Douce

West Mauritius

  • Flic-en-Flac
  • Tamarin
  • Le Morne

Mauritius East & South

  • Mahébourg (Blue Bay)
  • Souillac
  • Bel Ombre

Rodrigues

  • Port Mathurin (Rodrigues)
  • Port Sud-Est (Rodrigues)

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spearo.app · a private marine instrument · Grand Baie · a planner, not a safety guaranteePrivacy
Today
Notify me
Map
Best window · next 3 days
borderlinetoday · 06:00–09:00
you can see ~2 m ahead fish

Tell me when it's on

Just your email — nothing else needed.

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

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point your camera
−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: 3016 spots across 406 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 →
Pereybère reefGrand Baie
no data
Mauritius (incl. Rodrigues): fishing with or possessing a spear gun is prohibited without a licence (Fisheries Act 2023, s.38(1)(f)); underwater fishing needs a licence, issued only for ornamental fish or another purpose the supervising officer sets, and a diving cylinder is banned for it (s.129). Night rules not verified.
window
—

Lagoon inside the reef, depth 0.5–2 m, about 10 m past the drop-off, from the beach. Boat traffic in and outside the channels. Stay to the right of the red buoys that mark the boat lane. Spear gun only under a licence; no scuba fishing (Fisheries Act 2023). Coordinates and depth from snorkeling-report.com, approx.

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.

Download on theApp StoreGET IT ONGoogle Play
Google Play — 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
  • no targets this month
Law

    Mauritius: possessing or fishing with a spear gun is prohibited without a licence, and underwater fishing (snorkel or diving) needs a licence issued only for limited purposes (Fisheries Act 2023, s.38 and s.129). Scuba fishing is banned. Blue Bay and Balaclava are marine parks. Check with the Ministry of Blue Economy before any fishing.

    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 Grand Baie

    Where can I spearfish in Grand Baie?

    Grand Baie has rock entry points such as Pereybère reef. Grand Baie is the main resort town of the north coast, on a wide bay; the nearest reef snorkel is at Pereybère, about 3 km north. Below you'll find each spot (access, shelter and hazards) and today's forecast.

    When is the best season in Grand Baie?

    South-east trade winds blow most of the year, strongest in the austral winter (about May–October); cyclones are possible from November to April.

    How cold is the water in Grand Baie?

    Warm tropical lagoons behind a fringing reef, mostly 1–3 m deep near shore; the west and north are the lee of the trades.

    Is Grand Baie good for a beginner?

    Easy beach entries into shallow lagoons; beyond the reef it is boat-only, with boat traffic and currents in the passes.

    Do I need a licence in Grand Baie?

    Grand Baie: Mauritius: possessing or fishing with a spear gun is prohibited without a licence, and underwater fishing (snorkel or diving) needs a licence issued only for limited purposes (Fisheries Act 2023, s.38 and s.129). Scuba fishing is banned. Blue Bay and Balaclava are marine parks. Check with the Ministry of Blue Economy before any fishing.

    Data partners
    dive centres that send us real visibility readings
    Águas VivasMilfontes · Sagres