Mahébourg (Blue Bay) spearfishing forecast — wind, swell, visibility, tides & live cameras

spearo.app / Mauritius / Mahébourg (Blue Bay)
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◈Mahébourg (Blue Bay) · Mauritius
2.5
🌫 Murky all week after the storm — the water isn't settling
visibility~1m

Nottoday

Today — sit it out — wave, wind and surge pounding. 🌫 Murky all week after the storm — the water isn't settling

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.

Coming soon

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Spots in Mauritius

🇲🇺Mauritius

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Nearby towns

  • Trou d'Eau Douce
  • Souillac
  • Belle Mare
  • Poste Lafayette
  • Bel Ombre

West Mauritius

  • Tamarin
  • Le Morne
  • Flic-en-Flac

North Mauritius

  • Trou aux Biches
  • Grand Baie
  • Cap Malheureux

Rodrigues

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

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spearo.app · a private marine instrument · Mahébourg (Blue Bay) · a planner, not a safety guaranteePrivacy
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0 m

Surface

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

spearo.app
updated 19:23
Mahébourg (Blue Bay) — solo, off the rocks
DON'T GO
don't go · wave 2.3 m (occasionally up to ~4.6 m)
wave 2.3 m head-onwind 25, gusts 47 km/hsurge pounding the rocksvisibility ~1 m
today, best window 06:00–09:00
fish · Visibility 1 m · Water 24.7°C
confidence medium · verdict for the selected day
Best window · next 3 days

Next 3 days — not divable: wave up to 2.6 m

🌫 Murky all week after the storm — the water isn't settling

Tell me when it's on

Just your email — nothing else needed.

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
05:40–18:11 · waxing crescent
▲ 01:00▼ 07:00▲ 13:00▼ 19:00mid-range tides · 0.8 m
Hours (06→20)
06
09
12
15
18
Day's trends
Tide0.75 m
Wave2.26 m
Wind20 km/h
Water25 °C
fish activity: moon underfoot 01:30 · high · moonrise 07:07 · moderate · moon overhead 14:00 · high · moonset 20:47 · moderate
Conditions window06:00–09:00
don't go fish
Hs 2.32 m · roughperiod 6.4 s head-onwind 25→47surge 25.1viz 1 m
2.32 mrough · up to ~4.64 · 118° head-on
6.4 sswell moderate
25→47gusts 47 km/h
25.1pounding the rocks
0.17m/s
1 mrecent swell
24.7°C5 mm + hood
▲13:00tide turn near
Atmosphere5 kmprecip 0.4 mm
moderatemoonrise
  • wave 2.3 m (occasionally up to ~4.6 m)
  • steep wind-wave — choppy surface, careful on entry
  • first hours of the flood — fish moving in
confidence mediumtwilight
Open the seafloor map with entry points →

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

Download on theApp StoreGET IT ONGoogle Play
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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 →
Anemone Garden (Mahébourg bay)Mahébourg (Blue Bay)
no data
⚠ Restrictions apply
window
—

Inner reef patch in the lagoon, depth 4–6 m, max 8 m, boat access. Go only with a tour boat holding a commercial permit (prefix PC, not PPC). Inside the Grand Port Fishing Reserve (approx. boundary) — fishing is regulated there; check the rules before taking anything. Spear gun only under a licence; no scuba fishing (Fisheries Act 2023). Coordinates and depth from snorkeling-report.com, approx.

Google Maps
Blue Bay (shore zones)Mahébourg (Blue Bay)
no data
⛔ Banned here
window
—

Coral gardens of the marine park, depth 2–3 m, max 6 m, from the beach. The heart of the marine park is visited only on guided boat tours. Inside Blue Bay Marine Park (approx. boundary) — no fishing; a freediving and visibility spot. Spear gun only under a licence; no scuba fishing (Fisheries Act 2023). Coordinates and depth from snorkeling-report.com, approx.

One morning glance — and you know.

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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 Mahébourg (Blue Bay)

    Google Maps
    Blue Bay WallMahébourg (Blue Bay)
    no data
    ⛔ Banned here
    window
    —

    Shallow plateau dropping into a wall, depth 6–8 m, boat access. Inside Blue Bay Marine Park (approx. boundary) — no fishing; a freediving and visibility spot. Spear gun only under a licence; no scuba fishing (Fisheries Act 2023). Coordinates from a dive-site directory, approx.; the reef is also mapped in OpenStreetMap.

    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.

    Where can I spearfish in Mahébourg (Blue Bay)?

    Mahébourg (Blue Bay) has rock entry points such as Blue Bay (shore zones), Anemone Garden (Mahébourg bay) and Blue Bay Wall. Mahébourg is the old town on Grand Port bay in the south-east, 4 km from Blue Bay Marine Park; the reef patches of the bay are reached by boat. Below you'll find each spot (access, shelter and hazards) and today's forecast.

    When is the best season in Mahébourg (Blue Bay)?

    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 Mahébourg (Blue Bay)?

    Windward coast: the reef keeps the lagoons usable, but outside it the sea is often rough; the south coast has gaps with no reef (Gris Gris).

    Is Mahébourg (Blue Bay) 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 Mahébourg (Blue Bay)?

    Mahébourg (Blue Bay): 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