Where to Dive in October: 9 Best Destinations
The best places to dive in October are Raja Ampat (the season opens), the Maldives (mantas and reef sharks as the monsoon changes), Komodo, the Red Sea and Thailand's Andaman Sea, where liveaboards restart from mid-October. For big animals, the Galapagos and Cocos Island are in season, and Malta still has warm water.
October is a transition month. Indonesia's Raja Ampat season opens, Thailand's Andaman Sea reopens for liveaboards, and the Maldives move toward the northeast monsoon. The Red Sea is warm and clear, and the Mediterranean is still comfortable. If you are looking for a trip in October or November with good visibility and manta rays or reef sharks, see the answer further down.
October Dive Destinations at a Glance
| Destination | Why October | Water temp (°C) | Visibility | Level | Book |
|---|---|---|---|---|---|
| Raja Ampat, Indonesia | Season opens (October to April); mantas, reef sharks, dense fish life | 28–30 | 15–30 m | Intermediate | Raja Ampat liveaboards, Raja Ampat season guide |
| Maldives | Mantas, reef sharks and whale sharks as the monsoon changes | 28–30 | 15–30 m | All levels; advanced for channels | Maldives diving, Maldives liveaboards, Fuvahmulah |
| Komodo, Indonesia | Dry season tail end; mantas and reef sharks, warmer water | 25–29 | 15–30 m | Intermediate to advanced | Komodo diving, Komodo liveaboards |
| Red Sea, Egypt | Warm, clear water; reef sharks and wrecks | 26–28 | 25–40 m | All levels | Sharm El Sheikh, Hurghada, Red Sea liveaboards |
| Thailand: Andaman Sea and Similan Islands | Liveaboards reopen from mid-October | 28–30 | 15–30 m | All levels | Thailand diving, Similan liveaboards |
| Galapagos, Ecuador | Whale sharks at Darwin and Wolf; hammerheads | 18–24 | 10–25 m | Advanced | Galapagos Aggressor III |
| Cocos Island, Costa Rica | Hammerheads and schooling sharks by liveaboard | 26–29 | 15–30 m | Advanced | Cocos Island Aggressor, Okeanos Aggressor II |
| Bali and Nusa Penida, Indonesia | Late mola mola season; mantas at Nusa Penida | 21–27 | 15–30 m | Intermediate | Bali diving, Bali dive spots |
| Malta and Gozo | Late-summer sea; wrecks and caves with fewer visitors | 22–24 | 20–30 m | All levels | Malta diving, Malta dive spots |
Water temperatures and visibility are typical ranges and vary by site and year.
Raja Ampat in October
The Raja Ampat season runs from October to April, and October is the first month of it. Liveaboards such as Dewi Nusantara run itineraries during these months. Expect manta rays, reef sharks, schooling fish on current-swept points and dense reef life. Read the Raja Ampat season guide.
Maldives in October
October is a transition month between the southwest and northeast monsoons. Manta rays are seen in Baa Atoll and South Ari Atoll, reef sharks are common on channel dives, and whale sharks can be seen in South Ari Atoll throughout the year. Fuvahmulah, in the south, is known for tiger sharks. See the Maldives season guide.
Liveaboards such as DUNE Black Manta and DUNE Theia list central atoll departures from October.
Komodo in October
October is toward the end of the dry season, with the water warming up in the south. The northern sites are still good, and Komodo is known for manta rays and reef sharks. Liveaboards such as Komodo Aggressor and Mikumba Dua list October departures. See the Komodo season guide.
Red Sea in October
The Red Sea is warm and clear in October, and the heat of summer starts to ease. Reef sharks are regular visitors on the offshore reefs, and wreck diving is a highlight in the north. Liveaboards such as DUNE Longara list departures from October. Read the Red Sea season guide.
Thailand's Andaman Sea in October
The Andaman Sea is wet through the summer, and liveaboards to the Similan Islands restart in the second half of October. Land-based diving from Krabi and Phi Phi becomes more reliable as the season opens. MV Marco Polo and Thailand Aggressor list October departures. See the Similan Islands liveaboard guide.
Galapagos in October
The Galapagos are a liveaboard destination, and the northern islands of Wolf and Darwin are known for whale sharks and hammerheads. October falls in the cooler, nutrient-rich season, so expect colder water and a thicker wetsuit. Galapagos Aggressor III lists a 7-night trip to Wolf and Darwin. See our Galapagos liveaboard cost guide and where to see hammerhead sharks.
Cocos Island in October
Cocos Island, off Costa Rica, is reached by liveaboard and is known for hammerheads and other sharks. Cocos Island Aggressor and Okeanos Aggressor II both list Cocos Island trips from October. These are advanced trips with strong currents and open-water conditions.
Bali and Nusa Penida in October
The mola mola season at Nusa Penida runs toward its end in October, and reef manta rays are seen around the island throughout the year. See the Bali dive spots.
Malta and Gozo in October
Malta is a comfortable European option in October: the sea is still warm after the summer and dive sites are quiet. Wrecks, caves and shore dives are all open, and beginners can start with an Open Water course in Malta.
Liveaboards in October
An October liveaboard works best in these regions:
- Raja Ampat: the season opens. Browse Raja Ampat liveaboards.
- Maldives: manta rays and reef sharks, with many trips listed from October. Browse Maldives liveaboards.
- Red Sea: warm water and clear visibility. Browse Red Sea liveaboards.
- Komodo: dry season tail end. Browse Komodo liveaboards.
- Galapagos and Cocos Island: big-animal trips by liveaboard, as listed above.
Be Underwater is a marketplace: trip pages list dates, cabin availability and mandatory extras, and the operator runs the trip. Read the first liveaboard guide if this is your first one.
FAQ: Where to Dive in October
Where should I go for a scuba trip in October or November with good visibility and manta rays or reef sharks?
The Maldives are the strongest all-round answer: manta rays gather in Baa Atoll and South Ari Atoll, reef sharks are common on channel dives, and whale sharks can be seen in South Ari Atoll throughout the year. Raja Ampat is in season from October and has manta rays and reef sharks, Komodo has both in warm water, and the Red Sea has clear water and reef sharks on offshore reefs. See our guide to manta ray destinations for more.
Where is the best diving in October?
Raja Ampat, the Maldives, Komodo and the Red Sea are the strongest choices in October. For big animals, the Galapagos and Cocos Island run liveaboard trips.
Is October a good time to dive in Thailand?
On the Andaman Sea side, the season reopens in the second half of October, with Similan Islands liveaboards restarting. Early October can still be wet, so late October and November are more reliable.
Can I dive in the Maldives in October?
Yes. October is a transition between the monsoons, with manta rays, reef sharks and generally good visibility, and many liveaboard trips list October departures.
Can beginners dive in October?
Yes. The Maldives, Thailand, the Red Sea and Malta have beginner-friendly sites and instructors. Raja Ampat, Komodo, the Galapagos and Cocos Island suit divers with more experience.
Where to Dive in the Other Months
Where to dive in January, Where to dive in February, Where to dive in March, Where to dive in April, Where to dive in May, Where to dive in June, Where to dive in July, Where to dive in August, Where to dive in September, Where to dive in November, Where to dive in December, or see the full best places to scuba dive overview.
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