Diving in October: Where the Ocean Is Good

← September Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec November →

Destinations without verified monthly data are listed separately rather than guessed at. Every rating below comes from documented seasons. The full table, grouped by region and sortable, is at the foot of the page.

October · 32

Prime this month

The month at its best: the trips people fly across the world for. Water this month: 10–30 °C / 50–86 °F.

5/5

October · 36

Excellent right now

Reliably very good diving this month. Water this month: 2–30 °C / 36–86 °F.

4/5

Riviera Maya & the Cenotes

Mexico · Tannic surface layers in some pools.

24–26 °C / 75–79 °F25–80 m visibility

4/5

Raja Ampat

Indonesia · Season reopens; seas settle and manta activity picks up.

27–30 °C / 81–86 °F10–25 m visibility

4/5

North & South Malé Atolls

Maldives · Monsoon eases; visibility recovering.

27–29 °C / 81–84 °F15–25 m visibility

4/5

Palau

Palau · Weather begins to settle.

28–30 °C / 82–86 °F15–35 m visibility

4/5

Bonaire

Bonaire · Showers begin; brief runoff after heavy rain.

28–30 °C / 82–86 °F15–30 m visibility

4/5

Sipadan & Mabul

Malaysia · Transition month; conditions usually fine.

27–30 °C / 81–86 °F12–30 m visibility

4/5

Anilao

Philippines · Transition month; seas settle and visibility recovers.

27–29 °C / 81–84 °F10–20 m visibility

4/5

Rangiroa

French Polynesia · Warming; excellent clarity.

26–28 °C / 79–82 °F25–45 m visibility

4/5

Silfra & Iceland

Iceland · Aurora season begins in earnest.

2–4 °C / 36–39 °F70–100 m visibility

4/5

Ari Atoll

Maldives · Conditions improve; fewer boats than high season.

27–29 °C / 81–84 °F15–25 m visibility

4/5

Ningaloo Reef

Australia · Humpback season winds down

22–24 °C / 72–75 °F10–20 m visibility

4/5

Florida Keys

United States

26–29 °C / 79–84 °F12–25 m visibility

4/5

Fakarava

French Polynesia · Winds easing, water warming.

26–28 °C / 79–82 °F25–45 m visibility

4/5

The Azores

Portugal · Good diving until the first autumn systems arrive.

20–22 °C / 68–72 °F15–30 m visibility

4/5

Malta & Gozo

Malta · Water stays warm long after the crowds thin.

21–24 °C / 70–75 °F20–40 m visibility

4/5

Baa Atoll & Hanifaru Bay

Maldives · Still strong around the right moons.

27–29 °C / 81–84 °F10–20 m visibility

4/5

Taveuni & Rainbow Reef

Fiji · Warming; still generally clear.

26–28 °C / 79–82 °F15–35 m visibility

4/5

Chuuk (Truk) Lagoon

Federated States of Micronesia · Improving windows.

28–30 °C / 82–86 °F12–25 m visibility

4/5

Tiger Beach & Grand Bahama

The Bahamas · Season restarts as storms taper.

27–29 °C / 81–84 °F15–35 m visibility

4/5

Zanzibar & Mnemba

Tanzania · Warming and calm.

26–28 °C / 79–82 °F15–30 m visibility

4/5

Curaçao

Curaçao · Rainy season showers begin.

28–30 °C / 82–86 °F15–25 m visibility

4/5

Beqa Lagoon & Pacific Harbour

Fiji · Some females begin to leave.

26–28 °C / 79–82 °F10–25 m visibility

4/5

Dumaguete, Dauin & Apo Island

Philippines · Transition; often underrated and quiet.

27–29 °C / 81–84 °F10–20 m visibility

4/5

Okinawa & the Kerama Islands

Japan · Stable autumn diving

25–27 °C / 77–81 °F20–35 m visibility

4/5

Bermuda

23–25 °C / 73–77 °F20–40 m visibility

4/5

Costa Rica Pacific Coast

Costa Rica · Rainiest month; afternoon downpours.

26–29 °C / 79–84 °F10–18 m visibility

4/5

Aliwal Shoal & Umkomaas

South Africa · Raggies begin dispersing; spring winds.

20–24 °C / 68–75 °F8–20 m visibility

4/5

Larnaca & the Zenobia

Cyprus · Sea stays warm well into autumn.

22–25 °C / 72–77 °F20–35 m visibility

4/5

Oʻahu

United States · First north swells arrive.

26–27 °C / 79–81 °F15–30 m visibility

4/5

Espiritu Santo

Vanuatu · Warming; still settled.

25–27 °C / 77–81 °F15–30 m visibility

4/5

Tofo Beach

Mozambique · Warming; whale shark encounters pick up.

24–27 °C / 75–81 °F10–25 m visibility

4/5

Sodwana Bay

South Africa · Warming; wind windows matter.

22–25 °C / 72–77 °F10–25 m visibility

4/5

Vavaʻu

Tonga · Late season; whales departing.

24–26 °C / 75–79 °F18–35 m visibility

4/5

Port Sudan & Sanganeb

Sudan · The fleet traditionally returned; fine conditions.

28–30 °C / 82–86 °F15–40 m visibility

4/5

Medes Islands

Spain · Autumn clarity as the water column mixes.

18–21 °C / 64–70 °F15–30 m visibility

4/5

Madeira

Portugal

22–24 °C / 72–75 °F15–30 m visibility

October · 28

Good, with trade-offs

Solid diving this month. Read each note before you book. Water this month: 7–30 °C / 45–86 °F.

3/5

Cozumel

Mexico · Storm risk lingers; rainier weeks.

27–29 °C / 81–84 °F15–35 m visibility

3/5

Isla Mujeres & Cancún

Mexico · Hurricane tail; rainier weeks.

27–29 °C / 81–84 °F10–25 m visibility

3/5

Koh Tao

Thailand · Transition month with building rain.

28–30 °C / 82–86 °F8–20 m visibility

3/5

Malapascua

Philippines · Typhoon season peaks; monitor storm tracks.

28–30 °C / 82–86 °F10–20 m visibility

3/5

Roatán

Honduras · Rains arrive in earnest.

28–29 °C / 82–84 °F10–25 m visibility

3/5

Grand Cayman

Cayman Islands · Storm season winds down late month.

28–30 °C / 82–86 °F15–30 m visibility

3/5

Coron

Philippines · Transition month with improving stretches.

28–30 °C / 82–86 °F5–15 m visibility

3/5

Belize Barrier Reef

Belize · Wettest month on the cayes.

28–29 °C / 82–84 °F10–25 m visibility

3/5

Similan Islands & Richelieu Rock

Thailand · Park reopens around mid-month; seas still settling.

28–29 °C / 82–84 °F10–25 m visibility

3/5

Utila

Honduras · Rains build.

28–29 °C / 82–84 °F10–25 m visibility

3/5

Yap

Federated States of Micronesia · Unsettled spells.

28–30 °C / 82–86 °F8–25 m visibility

3/5

Jardines de la Reina

Cuba · Unsettled; season restarts late.

28–30 °C / 82–86 °F15–30 m visibility

3/5

Turks and Caicos

Turks and Caicos Islands

27–29 °C / 81–84 °F15–30 m visibility

3/5

Poor Knights Islands

New Zealand · Plankton feeds the reserve at a cost to visibility

15–17 °C / 59–63 °F8–18 m visibility

3/5

North Carolina Outer Banks

United States

21–25 °C / 70–77 °F12–25 m visibility

3/5

Scapa Flow

United Kingdom

10–12 °C / 50–54 °F6–12 m visibility

3/5

Nassau & New Providence

The Bahamas

27–29 °C / 81–84 °F15–35 m visibility

3/5

Dominica

28–29 °C / 82–84 °F10–25 m visibility

3/5

Saint Lucia

28–29 °C / 82–84 °F12–25 m visibility

3/5

British Virgin Islands

28–29 °C / 82–84 °F15–25 m visibility

3/5

Little Cayman

Cayman Islands · Unsettled; season restarts late month.

28–30 °C / 82–86 °F15–30 m visibility

3/5

Moalboal

Philippines · Transition; watch the typhoon outlook.

28–30 °C / 82–86 °F8–25 m visibility

3/5

Grenada

28–29 °C / 82–84 °F12–25 m visibility

3/5

Yonaguni

Japan · Autumn stability returns

26–28 °C / 79–82 °F20–40 m visibility

3/5

Green Island

Taiwan · Monsoon transition

26–28 °C / 79–82 °F15–35 m visibility

3/5

South Australia

Australia · Improving weather windows

14–17 °C / 57–63 °F4–12 m visibility

3/5

Arctic Norway

Norway · Water clears as it cools; whales not yet reliable.

7–10 °C / 45–50 °F10–25 m visibility

3/5

Coiba

Panama

25–29 °C / 77–84 °F8–18 m visibility

Wildlife calendar

In the water in October

Species with documented seasonal or resident sightings this month, each with one place that reliably has them.

Marine-life calendar →

Blacktip Reef Shark

e.g. Similan Islands & Richelieu Rock

Blue Shark

e.g. The Azores

Blue-Spotted Ribbontail Ray

e.g. Similan Islands & Richelieu Rock

Bull Shark

e.g. Costa Rica Pacific Coast

California Sea Lion

e.g. Sea of Cortez & Cabo Pulmo

Hawksbill Turtle

e.g. Seychelles

Humpback Whale

e.g. Vavaʻu

Leopard (Zebra) Shark

e.g. Similan Islands & Richelieu Rock

Mola Mola (Ocean Sunfish)

e.g. Bali & Nusa Penida

Oceanic Manta Ray

e.g. Raja Ampat

Oceanic Whitetip Shark

e.g. Marsa Alam & the Deep South

Olive Ridley Turtle

e.g. Costa Rica Pacific Coast

Also in season (no monthly detail verified yet)

Their best-months list includes October, but we have not verified water, visibility or a rating for it, so they sit here rather than in the ranks above.

Bikini Atoll · Marshall Islands

The full table

Every October figure, region by region

99 destinations · every figure documented · sort by any column, or jump to a region

Sort by

Australia, New Zealand & East Asia 10 Caribbean & Western Atlantic 19 Europe, Atlantic & Mediterranean 9 Indian Ocean & East Africa 12 Pacific Islands & Micronesia 12 Red Sea & Middle East 9 Southeast Asia & Coral Triangle 18 The Americas & Eastern Pacific 10

Destination	Rating	Water	Visibility	What October is like there
Australia, New Zealand & East Asia · 10 destinations
Cairns & the Ribbon ReefsAustralia	5/5	24–27 °C / 75–81 °F	20–35 m	Glassy spells and long calm days
Townsville & the YongalaAustralia	5/5	24–27 °C / 75–81 °F	15–30 m	Calm seas; the Yongala at its best
Coral Sea & Osprey ReefAustralia	5/5	25–27 °C / 77–81 °F	30–60 m	Calm seas and long horizons
Izu PeninsulaJapan	5/5	20–23 °C / 68–73 °F	8–18 m	Warm water, cleaner visibility, fewer crowds
Ningaloo ReefAustralia	4/5	22–24 °C / 72–75 °F	10–20 m	Humpback season winds down
Okinawa & the Kerama IslandsJapan	4/5	25–27 °C / 77–81 °F	20–35 m	Stable autumn diving
Poor Knights IslandsNew Zealand	3/5	15–17 °C / 59–63 °F	8–18 m	Plankton feeds the reserve at a cost to visibility
YonaguniJapan	3/5	26–28 °C / 79–82 °F	20–40 m	Autumn stability returns
Green IslandTaiwan	3/5	26–28 °C / 79–82 °F	15–35 m	Monsoon transition
South AustraliaAustralia	3/5	14–17 °C / 57–63 °F	4–12 m	Improving weather windows
Caribbean & Western Atlantic · 19 destinations
Riviera Maya & the CenotesMexico	4/5	24–26 °C / 75–79 °F	25–80 m	Tannic surface layers in some pools.
BonaireBonaire	4/5	28–30 °C / 82–86 °F	15–30 m	Showers begin; brief runoff after heavy rain.
Tiger Beach & Grand BahamaThe Bahamas	4/5	27–29 °C / 81–84 °F	15–35 m	Season restarts as storms taper.
CuraçaoCuraçao	4/5	28–30 °C / 82–86 °F	15–25 m	Rainy season showers begin.
BermudaBermuda	4/5	23–25 °C / 73–77 °F	20–40 m
CozumelMexico	3/5	27–29 °C / 81–84 °F	15–35 m	Storm risk lingers; rainier weeks.
Isla Mujeres & CancúnMexico	3/5	27–29 °C / 81–84 °F	10–25 m	Hurricane tail; rainier weeks.
RoatánHonduras	3/5	28–29 °C / 82–84 °F	10–25 m	Rains arrive in earnest.
Grand CaymanCayman Islands	3/5	28–30 °C / 82–86 °F	15–30 m	Storm season winds down late month.
Belize Barrier ReefBelize	3/5	28–29 °C / 82–84 °F	10–25 m	Wettest month on the cayes.
UtilaHonduras	3/5	28–29 °C / 82–84 °F	10–25 m	Rains build.
Jardines de la ReinaCuba	3/5	28–30 °C / 82–86 °F	15–30 m	Unsettled; season restarts late.
Turks and CaicosTurks and Caicos Islands	3/5	27–29 °C / 81–84 °F	15–30 m
Nassau & New ProvidenceThe Bahamas	3/5	27–29 °C / 81–84 °F	15–35 m
DominicaDominica	3/5	28–29 °C / 82–84 °F	10–25 m
Saint LuciaSaint Lucia	3/5	28–29 °C / 82–84 °F	12–25 m
British Virgin IslandsBritish Virgin Islands	3/5	28–29 °C / 82–84 °F	15–25 m
Little CaymanCayman Islands	3/5	28–30 °C / 82–86 °F	15–30 m	Unsettled; season restarts late month.
GrenadaGrenada	3/5	28–29 °C / 82–84 °F	12–25 m
Europe, Atlantic & Mediterranean · 9 destinations
Canary IslandsSpain	5/5	23–24 °C / 73–75 °F	20–30 m
Silfra & IcelandIceland	4/5	2–4 °C / 36–39 °F	70–100 m	Aurora season begins in earnest.
The AzoresPortugal	4/5	20–22 °C / 68–72 °F	15–30 m	Good diving until the first autumn systems arrive.
Malta & GozoMalta	4/5	21–24 °C / 70–75 °F	20–40 m	Water stays warm long after the crowds thin.
Larnaca & the ZenobiaCyprus	4/5	22–25 °C / 72–77 °F	20–35 m	Sea stays warm well into autumn.
Medes IslandsSpain	4/5	18–21 °C / 64–70 °F	15–30 m	Autumn clarity as the water column mixes.
MadeiraPortugal	4/5	22–24 °C / 72–75 °F	15–30 m
Scapa FlowUnited Kingdom	3/5	10–12 °C / 50–54 °F	6–12 m
Arctic NorwayNorway	3/5	7–10 °C / 45–50 °F	10–25 m	Water clears as it cools; whales not yet reliable.
Indian Ocean & East Africa · 12 destinations
MauritiusMauritius	5/5	24–27 °C / 75–81 °F	15–30 m	Spring calm; excellent all-around conditions.
Mafia IslandTanzania	5/5	26–28 °C / 79–82 °F	15–30 m	Calm season begins; first surface whale sharks.
SeychellesSeychelles	5/5	26–29 °C / 79–84 °F	15–30 m	Second calm window; historically the whale shark month.
Nosy BeMadagascar	5/5	26–29 °C / 79–84 °F	12–25 m	Whale shark season builds; Omura's whales about.
North & South Malé AtollsMaldives	4/5	27–29 °C / 81–84 °F	15–25 m	Monsoon eases; visibility recovering.
Ari AtollMaldives	4/5	27–29 °C / 81–84 °F	15–25 m	Conditions improve; fewer boats than high season.
Baa Atoll & Hanifaru BayMaldives	4/5	27–29 °C / 81–84 °F	10–20 m	Still strong around the right moons.
Zanzibar & MnembaTanzania	4/5	26–28 °C / 79–82 °F	15–30 m	Warming and calm.
Aliwal Shoal & UmkomaasSouth Africa	4/5	20–24 °C / 68–75 °F	8–20 m	Raggies begin dispersing; spring winds.
Tofo BeachMozambique	4/5	24–27 °C / 75–81 °F	10–25 m	Warming; whale shark encounters pick up.
Sodwana BaySouth Africa	4/5	22–25 °C / 72–77 °F	10–25 m	Warming; wind windows matter.
The Sardine Run (Wild Coast)South Africa	1/5	19–23 °C / 66–73 °F	5–15 m	No run.
Pacific Islands & Micronesia · 12 destinations
Kona, HawaiʻiUnited States	5/5	26–28 °C / 79–82 °F	20–40 m	Late-season calm.
Maui & MolokiniUnited States	5/5	26–27 °C / 79–81 °F	25–45 m	Late-season reliability.
PalauPalau	4/5	28–30 °C / 82–86 °F	15–35 m	Weather begins to settle.
RangiroaFrench Polynesia	4/5	26–28 °C / 79–82 °F	25–45 m	Warming; excellent clarity.
FakaravaFrench Polynesia	4/5	26–28 °C / 79–82 °F	25–45 m	Winds easing, water warming.
Taveuni & Rainbow ReefFiji	4/5	26–28 °C / 79–82 °F	15–35 m	Warming; still generally clear.
Chuuk (Truk) LagoonFederated States of Micronesia	4/5	28–30 °C / 82–86 °F	12–25 m	Improving windows.
Beqa Lagoon & Pacific HarbourFiji	4/5	26–28 °C / 79–82 °F	10–25 m	Some females begin to leave.
OʻahuUnited States	4/5	26–27 °C / 79–81 °F	15–30 m	First north swells arrive.
Espiritu SantoVanuatu	4/5	25–27 °C / 77–81 °F	15–30 m	Warming; still settled.
VavaʻuTonga	4/5	24–26 °C / 75–79 °F	18–35 m	Late season; whales departing.
YapFederated States of Micronesia	3/5	28–30 °C / 82–86 °F	8–25 m	Unsettled spells.
Red Sea & Middle East · 9 destinations
Sharm El Sheikh & Ras MohammedEgypt	5/5	26–28 °C / 79–82 °F	20–30 m	Many regulars' favorite month.
Hurghada & El GounaEgypt	5/5	26–28 °C / 79–82 °F	15–30 m	A favorite month for the wreck run.
Marsa Alam & the Deep SouthEgypt	5/5	27–29 °C / 81–84 °F	20–30 m	Oceanic whitetip season opens at Elphinstone.
Brothers, Daedalus & St John'sEgypt	5/5	27–29 °C / 81–84 °F	20–40 m	Oceanic whitetip peak at the Brothers.
DahabEgypt	5/5	25–28 °C / 77–82 °F	15–30 m	Still warm, with superbly calm spells.
Daymaniyat IslandsOman	5/5	27–30 °C / 81–86 °F	10–25 m	Prime month; whale sharks still passing.
AqabaJordan	5/5	25–27 °C / 77–81 °F	15–30 m	Prime month on both land and sea.
Musandam PeninsulaOman	5/5	28–30 °C / 82–86 °F	10–20 m	Warm water and returning comfort: the best of both.
Port Sudan & SanganebSudan	4/5	28–30 °C / 82–86 °F	15–40 m	The fleet traditionally returned; fine conditions.
Southeast Asia & Coral Triangle · 18 destinations
Bali & Nusa PenidaIndonesia	5/5	24–29 °C / 75–84 °F	15–30 m	Mola sightings continue; seas stay friendly.
KomodoIndonesia	5/5	23–28 °C / 73–82 °F	15–25 m	Trades ease; often a sweet spot of calm seas and fish action park-wide.
Lembeh StraitIndonesia	5/5	26–29 °C / 79–84 °F	10–20 m	Excellent month as water begins warming again.
WakatobiIndonesia	5/5	27–29 °C / 81–84 °F	20–40 m	Warm, clear, and quiet.
Banda Sea & AmbonIndonesia	5/5	27–29 °C / 81–84 °F	20–40 m	Prime crossing month; calm seas and peak schedules.
Bunaken & ManadoIndonesia	5/5	27–29 °C / 81–84 °F	15–30 m	Late-season calm; often outstanding.
AlorIndonesia	5/5	23–28 °C / 73–82 °F	15–30 m	Often the best all-around window; liveaboard traffic peaks.
Raja AmpatIndonesia	4/5	27–30 °C / 81–86 °F	10–25 m	Season reopens; seas settle and manta activity picks up.
Sipadan & MabulMalaysia	4/5	27–30 °C / 81–86 °F	12–30 m	Transition month; conditions usually fine.
AnilaoPhilippines	4/5	27–29 °C / 81–84 °F	10–20 m	Transition month; seas settle and visibility recovers.
Dumaguete, Dauin & Apo IslandPhilippines	4/5	27–29 °C / 81–84 °F	10–20 m	Transition; often underrated and quiet.
Koh TaoThailand	3/5	28–30 °C / 82–86 °F	8–20 m	Transition month with building rain.
MalapascuaPhilippines	3/5	28–30 °C / 82–86 °F	10–20 m	Typhoon season peaks; monitor storm tracks.
CoronPhilippines	3/5	28–30 °C / 82–86 °F	5–15 m	Transition month with improving stretches.
Similan Islands & Richelieu RockThailand	3/5	28–29 °C / 82–84 °F	10–25 m	Park reopens around mid-month; seas still settling.
MoalboalPhilippines	3/5	28–30 °C / 82–86 °F	8–25 m	Transition; watch the typhoon outlook.
Mergui ArchipelagoMyanmar	2/5	27–29 °C / 81–84 °F	8–20 m	Some seasons open late this month; confirm sailings.
Tubbataha ReefsPhilippines	1/5	—	—	Seas can flatten between monsoons, but no trips run.
The Americas & Eastern Pacific · 10 destinations
Galápagos IslandsEcuador	5/5	18–23 °C / 64–73 °F	10–20 m	Late whale shark window; hammerheads thick.
Sea of Cortez & Cabo PulmoMexico	5/5	26–29 °C / 79–84 °F	20–30 m	Whale sharks return to La Paz Bay.
Cocos IslandCosta Rica	5/5	24–28 °C / 75–82 °F	12–25 m
California Channel IslandsUnited States	5/5	16–20 °C / 61–68 °F	15–25 m
British ColumbiaCanada	5/5	10–13 °C / 50–55 °F	12–25 m	Bloom dies back; visibility opens.
Fernando de NoronhaBrazil	5/5	26–28 °C / 79–82 °F	25–40 m
Florida KeysUnited States	4/5	26–29 °C / 79–84 °F	12–25 m
Costa Rica Pacific CoastCosta Rica	4/5	26–29 °C / 79–84 °F	10–18 m	Rainiest month; afternoon downpours.
North Carolina Outer BanksUnited States	3/5	21–25 °C / 70–77 °F	12–25 m
CoibaPanama	3/5	25–29 °C / 77–84 °F	8–18 m

A dash means that figure is not yet verified for this month, not that it is zero.

Make it a trip

The planner crosses this month with your level and interests, and shows its reasons for every match.

Plan a October trip

Diving in October

Prime this month

Cairns & the Ribbon Reefs

Galápagos Islands

Sharm El Sheikh & Ras Mohammed

Bali & Nusa Penida

Komodo

Sea of Cortez & Cabo Pulmo

Cocos Island

Hurghada & El Gouna

Kona, Hawaiʻi

Marsa Alam & the Deep South

Brothers, Daedalus & St John's

Lembeh Strait

Dahab

Townsville & the Yongala

California Channel Islands

Mauritius

Maui & Molokini

Mafia Island

British Columbia

Daymaniyat Islands

Wakatobi

Fernando de Noronha

Seychelles

Banda Sea & Ambon

Canary Islands

Coral Sea & Osprey Reef

Aqaba

Bunaken & Manado

Alor

Izu Peninsula

Nosy Be

Musandam Peninsula

Excellent right now

Riviera Maya & the Cenotes

Raja Ampat

North & South Malé Atolls

Palau

Bonaire

Sipadan & Mabul

Anilao

Rangiroa

Silfra & Iceland

Ari Atoll

Ningaloo Reef

Florida Keys

Fakarava

The Azores

Malta & Gozo

Baa Atoll & Hanifaru Bay

Taveuni & Rainbow Reef

Chuuk (Truk) Lagoon

Tiger Beach & Grand Bahama

Zanzibar & Mnemba

Curaçao

Beqa Lagoon & Pacific Harbour

Dumaguete, Dauin & Apo Island

Okinawa & the Kerama Islands

Bermuda

Costa Rica Pacific Coast

Aliwal Shoal & Umkomaas

Larnaca & the Zenobia

Oʻahu

Espiritu Santo

Tofo Beach

Sodwana Bay

Vavaʻu

Port Sudan & Sanganeb

Medes Islands

Madeira

Good, with trade-offs

Cozumel

Isla Mujeres & Cancún

Koh Tao

Malapascua

Roatán

Grand Cayman

Coron

Belize Barrier Reef