When is the best time to dive Kosrae?

The best months to dive Kosrae are January, February, March, April, May, November, December, when conditions are most favorable.

What certification do I need to dive Kosrae?

Kosrae 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 Kosrae?

A 2-tank dive at Kosrae averages around $120 USD. The destination is in our mid range tier.

What will I see diving Kosrae?

Kosrae is known for manta ray, grey reef shark, Napoleon wrasse, eagle ray, hard coral, with 20–40 m visibility and 27–30°C water temperatures.

Why does Kosrae score 66.0/100 on OkToDive?

Kosrae earns a 66.0/100 Score based on 12 weighted categories including marine life, coral health, visibility, operator quality, and value. Backed by 35 operator reviews.

Kosrae Diving — Score: 66.0/100 | Conditions, Operators & Guide

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World Class

Beginner Friendly

Kosrae

Federated States of MicronesiaAsia-Pacific

66.0

SCORE

5.3167°N

162.9833°E

Kosrae is arguably the least-dived island in Micronesia, where near-100% hard coral coverage creates underwater gardens of staggering beauty. No bleaching events have significantly impacted these reefs, and the handful of annual visitors means you'll likely dive alone. The Lelu ruins add archaeological interest topside.

Micronesia's Untouched Coral Gardens

Visibility20–40 m

Temperature27–30°C

Max Depth40 m

Currentmild

2-Tank Dive$120

Best MonthsJanuary, February, March, April

CertificationOpen WaterBeginner Friendly

Score Breakdown

Click any score to see a detailed breakdown

Marine Life

75.0

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

75.0

Coral & Reef Health

90.0

Visibility & Conditions

82.0

Dive Site Variety

58.0

Water Temperature

90.0

Depth & Access

65.0

Operator Quality

72.0

Topside Experience

42.0

Getting There

20.0

Value & Cost

55.0

Crowding

95.0

Social Proof

48.0

Key Species

manta raygrey reef sharkNapoleon wrasseeagle rayhard coral

Dive Types

reefwalldrift

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

Lelu Ruins visitjungle waterfall hikesmangrove kayakingWWII Japanese gun emplacements

Nearby Cultural Sites

Lelu Ruins
Menke Ruins

Non-Diver Partner Score

4/10

Limited topside — plan ahead for non-diving partners.

Family FriendlyNot recommended

Restaurants & Nightlifenone

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 Chamber500 km — US Military facilities, Guam

Nearest Hospital5 km

Basic hospital on island; air evacuation to Guam for serious emergencies

Skill LevelBeginner Friendly

Current Strengthmild

Top Operators

Kosrae Nautilus Resort Diving

PADI

4.7

35 reviewsNITROX

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

25+

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.
→Nearest hyperbaric chamber is ~500 km away. Evacuation is slow. Dive conservative profiles and get DAN insurance before you fly.
→Variable visibility
→Deep profiles

What will surprise you

→Kosrae 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	30–40	29	Mild	Calm	Light	70%	reef fish active, peak season crowds
Feb	30–40	29	Mild	Calm	Light	70%	reef fish active, peak season crowds
Mar	30–40	29	Mild	Calm	Light	70%	reef fish active, peak season crowds
Apr	30–40	29	Mild	Calm	Light	70%	reef fish active
May	30–40	29	Mild	Calm	Light	70%	reef fish active
Jun	20–30	29	Mod	Mod	Wet	70%	reef fish active
Jul	20–30	29	Mod	Mod	Wet	70%	reef fish active, manta season
Aug	20–30	29	Mod	Mod	Wet	70%	reef fish active, manta season
Sep	20–30	29	Mod	Mod	Wet	70%	reef fish active, manta season
Oct	20–30	29	Mod	Mod	Wet	70%	reef fish active
Nov	30–40	29	Mild	Calm	Light	70%	reef fish active
Dec	30–40	29	Mild	Calm	Light	70%	reef fish active

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 subjects72

Wide angle79

Viz stability78

Hover friendliness100

Natural light57

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

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

$2,300–$3,250

Hostels, shore diving, cheap eats

Flights (RT from US): $1,100–$1,300
Accommodation / day: $50–$100
Diving / day: $100–$120
Food / day: $10–$25
Transfers + misc: $80–$230

Mid-range

$3,500–$5,150

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

Flights (RT from US): $1,550–$1,850
Accommodation / day: $120–$220
Diving / day: $120–$160
Food / day: $30–$60
Transfers + misc: $80–$230

Splurge

$5,750–$8,850

Top resorts or liveaboards, premium operators

Flights (RT from US): $2,250–$2,750
Accommodation / day: $260–$500
Diving / day: $160–$200
Food / day: $70–$140
Transfers + misc: $80–$230

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

Kosrae Diving — Federated States of Micronesia