When is the best time to dive Mauritius – Trou aux Biches?

The best months to dive Mauritius – Trou aux Biches are October, November, December, January, February, March, April, when conditions are most favorable.

What certification do I need to dive Mauritius – Trou aux Biches?

Mauritius – Trou aux Biches requires a minimum certification of Open Water. Currents are typically mild and the maximum depth reaches 40 m.

How much does it cost to dive Mauritius – Trou aux Biches?

A 2-tank dive at Mauritius – Trou aux Biches averages around $90 USD. The destination is in our mid range tier.

Why does Mauritius – Trou aux Biches score 68.8/100 on OkToDive?

Mauritius – Trou aux Biches earns a 68.8/100 Score based on 12 weighted categories including marine life, coral health, visibility, operator quality, and value. Backed by 370 operator reviews.

Mauritius – Trou aux Biches Diving — Score: 68.8/100 | Conditions, Operators & Guide

Q: What will I see diving Mauritius – Trou aux Biches?

Mauritius – Trou aux Biches is known for spinner dolphin, eagle ray, moray eel, scorpionfish, lionfish, green turtle, with 15–35 m visibility and 22–28°C water temperatures.

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World Class

Beginner Friendly

Mauritius – Trou aux Biches

MauritiusIndian Ocean

68.8

SCORE

-20.0376°N

57.5515°E

Trou aux Biches on Mauritius's sheltered northwest coast is one of the island's premier dive areas, where volcanic rock formations create dramatic swim-throughs and the famous 'Cathedral' cavern. Spinner dolphins are regular visitors, and the calm lagoon conditions suit all levels. World-class resorts and a buzzing food scene make Mauritius an ideal luxury dive-holiday destination.

Lagoon Reefs & Volcanic Drop-offs

Visibility15–35 m

Temperature22–28°C

Max Depth40 m

Currentmild

2-Tank Dive$90

Best MonthsOctober, November, December, January

CertificationOpen WaterBeginner Friendly

Score Breakdown

Click any score to see a detailed breakdown

Marine Life

65.0

Species diversity, megafauna encounters, reef fish abundance, macro life, and endemic species.

Species Diversity

Megafauna Encounters

Reef Fish Abundance

Macro Life

Endemic Species

Marine Life Diversity

65.0

Coral & Reef Health

62.0

Visibility & Conditions

72.0

Dive Site Variety

62.0

Water Temperature

78.0

Depth & Access

62.0

Operator Quality

72.0

Topside Experience

88.0

Getting There

72.0

Value & Cost

65.0

Crowding

62.0

Social Proof

65.0

Key Species

spinner dolphineagle raymoray eelscorpionfishlionfishgreen turtle

Dive Types

reefwalldriftwreck

Traveling with Non-Divers?

Your non-diving travel companions will find plenty to enjoy topside while you're underwater. Here are some activities to consider.

Activities for Non-Divers

Île aux Cerfs beachPamplemousses Botanical GardenChamarel Seven Coloured Earthscatamaran cruises

Nearby Cultural Sites

Aapravasi Ghat UNESCO site
Port Louis Chinatown
Le Morne Brabant

Non-Diver Partner Score

9/10

Excellent for non-divers — they'll love it here.

Family FriendlyYes

Restaurants & Nightlifemoderate

Safety & Emergency

Dive Insurance

Dive insurance is essential. Standard travel insurance often excludes scuba diving. We recommend DAN (Divers Alert Network) for comprehensive dive accident coverage.

Learn More at DAN.org

Hyperbaric Chamber35 km — SSRN Hospital Hyperbaric Unit, Pamplemousses

Nearest Hospital10 km

SSRN Hospital in Pamplemousses has a hyperbaric unit (35 km); multiple hospitals across the island — DAN coverage recommended

Skill LevelBeginner Friendly

Current Strengthmild

Top Operators

Blue Water Diving Centre

PADI

4.7

220 reviewsNITROX

Dive Dream Mauritius

SSI

4.6

150 reviews

Compare This Dive Site

Honest reality check

What your dive shop won't tell you

The minimum certification printed on a brochure is the legal floor, not the honest recommendation. Here's what we actually think you should bring to this site.

Recommended logged dives

45+

Below this we'd send you somewhere easier first.

Recommended certification

Advanced Open Water

“Intermediate minimum — deep profiles and variable viz.”

What will challenge you

→Recreational limit of 40 m is reachable here (max depth 40 m). Gas planning and NDL tracking matter.
→Wreck penetration requires Wreck specialty training at minimum, and often decompression planning. Don't improvise inside.
→Variable visibility
→Deep profiles

What will surprise you

→Thermoclines can drop water temp by 6°C between the surface and depth. Your wetsuit choice should match the minimum, not the average.
→Mauritius – Trou aux Biches has more marine life variety than most divers expect
→Local operators know spots the guidebooks miss

Time of day

When to dive it

Every dive shop gives you this briefing at 7am. We just wrote it down. Tidal dependency: slight. Optimal window: First light to 11am for best visibility..

Morning

Viz
peak
Current
mild
Crowd
light

reef exploration
photography

Best light and calmest conditions before afternoon wind picks up.

Afternoon

Viz
moderate
Current
mild
Crowd
moderate

drift diving
second tank

Wind chop can reduce viz. Still diveable but morning is better.

Month-by-month

Dive forecast

Realistic conditions by month. Viz ranges are what you should actually expect, not best-case marketing numbers. Confidence % is the share of days that match this profile historically.

Month	Viz (m)	Temp (°C)	Current	Sea	Rain	Confidence	Highlights
Jan	25–35	25	Mild	Calm	Light	70%	reef fish active, wreck visibility good, peak season crowds
Feb	25–35	25	Mild	Calm	Light	70%	reef fish active, wreck visibility good, peak season crowds
Mar	25–35	25	Mild	Calm	Light	70%	reef fish active, wreck visibility good, peak season crowds
Apr	25–35	25	Mild	Calm	Light	70%	reef fish active, wreck visibility good
May	25–35	25	Mild	Calm	Light	70%	reef fish active, wreck visibility good
Jun	15–25	27	Mod	Mod	Wet	70%	reef fish active, wreck visibility good
Jul	15–25	27	Mod	Mod	Wet	70%	reef fish active, wreck visibility good, manta season
Aug	15–25	27	Mod	Mod	Wet	70%	reef fish active, wreck visibility good, manta season
Sep	15–25	27	Mod	Mod	Wet	70%	reef fish active, wreck visibility good, manta season
Oct	15–25	27	Mod	Mod	Wet	70%	reef fish active, wreck visibility good
Nov	25–35	25	Mild	Calm	Light	70%	reef fish active, wreck visibility good
Dec	25–35	25	Mild	Calm	Light	70%	reef fish active, wreck visibility good

Shoot here

Photography brief

Subjects are only half the shot. A perfect macro site is useless in a three-knot drift, and a wide-angle dream is useless at 35 m with a murky ceiling. These are the conditions, not the hype.

Macro subjects76

Wide angle71

Viz stability68

Hover friendliness100

Natural light50

Recommended kit

→Macro lens (60mm or 105mm), focus light, dual strobes positioned for fill
→Wide-angle or fisheye (8-15mm range), dual strobes for close-focus wide angle
→Dedicated video light for dark wreck interiors; don't rely on strobes alone

Level up here

What this site will teach you

The dives that made you a better diver are the ones that made you uncomfortable for the right reasons. Here's what this site will quietly train you for.

Deep diving comfort
advanced
Regular dives past 30m build confidence at depth.

What it costsEstimates — calibration pending

7-day trip, per person

Rough ranges anchored to existing regional data — not booking quotes. Land-based trip, standard breakdown.

Budget

$2,400–$3,500

Hostels, shore diving, cheap eats

Flights (RT from US): $1,150–$1,450
Accommodation / day: $50–$100
Diving / day: $80–$90
Food / day: $40–$80
Transfers + misc: $50–$150

Mid-range

$3,850–$5,750

3-star hotels, standard boat ops, mix of restaurants

Flights (RT from US): $1,700–$2,100
Accommodation / day: $120–$220
Diving / day: $90–$120
Food / day: $90–$160
Transfers + misc: $50–$150

Splurge

$6,450–$10,250

Top resorts or liveaboards, premium operators

Flights (RT from US): $2,500–$3,100
Accommodation / day: $260–$500
Diving / day: $120–$150
Food / day: $180–$350
Transfers + misc: $50–$150

Flights priced round-trip from a major US hub. Figures are per person on a shared room. Solo travelers add ~30% to accommodation.

Pair with

Build a trip around it

Most divers fly across the world for one destination and don't realise another worth-it site is 90 minutes away. Here are the honest pairings.

Best dive types here

Mauritius – Trou aux Biches Diving — Mauritius

Score Breakdown

Marine Life

Key Species

Dive Types

Traveling with Non-Divers?

Activities for Non-Divers

Nearby Cultural Sites

Non-Diver Partner Score

Safety & Emergency

Dive Insurance

Top Operators

Blue Water Diving Centre

Dive Dream Mauritius

What your dive shop won't tell you

When to dive it

Dive forecast

Photography brief

What this site will teach you

Deep diving comfort

7-day trip, per person

Build a trip around it