October is a sweet spot for divers, combining comfortable weather with prime underwater conditions across a variety of regions. From vibrant reefs to bucket-list big-animal encounters, there’s no shortage of options. To help you choose, we’ve selected five destinations that shine for scuba diving in October.
Looking for other months? See our full 2026 Scuba Travel Calendar.
South Australia: Enter the Dragon
Dive Highlights: Cold Water, Photo Opps, Shore Diving
Alex MustardA leafy seadragon (Phycodurus eques) swims over seagrass at Wool Bay Jetty, South Australia.
Divers, more than anyone who stays on dry land, know just how wacky and wondrous the ocean’s oddest creatures can be. Endemic to the waters off southern and eastern Australia, the leafy sea dragon mystifies divers with leaf-life appendages that provide perfect camouflage among lush forests of seaweed and kelp.
Outside of Adelaide along the Fleurieu Peninsula, Rapid Bay offers a perfectly sheltered oasis for these protected animals to thrive, and they’re regularly seen beneath the new Rapid Bay Jetty. Even in the presence of abundant divers, the creatures stay confident in their camouflage and just go about doing their slow-swimming thing.
Second Valley’s jetty, a 15-minute drive north of Rapid Bay, is another good bet for leafy sea dragon sightings, with a pretty beach for swimming and snorkeling too. —Terry Ward
Operators: Diving Adelaide
Related Reading: In Search of Leafy Sea Dragons
Florida Keys: Wreck Diving Road Trip
Dive Highlights: Wrecks, Photo Opps, Boat Dives
Brandi MuellerThe Duane, off Key Largo, lies in 120 feet of water and is excellent for advanced divers to explore in October.
There’s no time like fall for a Florida wreck trek. September to November is the low season for tourists—with smaller crowds come discounted accommodations, personalized service and quieter dive sites.
Fly into Fort Lauderdale, load your gear into a rental car and get your fins wet on a signature local wreck like the Tracey or Hog Heaven. Then make your way down U.S. 1 toward the Florida Keys.
A smorgasbord of hulking wrecks spans the entirety of the Keys. Start with the USS Spiegel Grove and the Duane off Key Largo. Make a pit stop in Marathon to check out the Thunderbolt. Then take the famed Seven Mile Bridge down to Key West and dive the 522-foot USNS Vandenberg before trekking back up the Overseas Highway. —Melissa Smith
Operators: Amoray Dive Resort; Key Dives; Captain Hook’s
Related Reading: Where To Go Scuba Diving in Key Largo
Chuuk Lagoon: Wartime History in the Deep
Dive Highlights: Advanced Diving, Wrecks, Photo Opps, Boat Dives and Liveaboard Options
Felipe BarrioFor its calm seas and astonishing visibility, October is an ideal time to visit Chuuk Lagoon.
If you've chased hammerheads at Cocos and ridden the currents at Socorro, Chuuk Lagoon offers a unique kind of advanced diving experience, one demanding patience and reverence rather than brute fitness. This warm-water wreck mecca holds over 60 Japanese World War II vessels sunk during Operation Hailstone, now draped in sponges and corals and frozen in time—the year 1944, to be precise.
Unlike cold, dark Atlantic wrecks, these ships rest in bathwater warmth with sunlight streaming through cargo holds rich in history and life. You'll fin past tanks, fighter planes, torpedoes, old boots, china and sake bottles. You might even dip into an engine room.
October is a great time to go as the lagoon calms between monsoon seasons and visibility stretches beyond 100 feet. —Candice Landau
Operators: Truk Odyssey
Related Reading: Embracing the Deep in Chuuk Lagoon
La Paz, Mexico: Sea Lions and Sunbathing
Dive Highlights: Big Animals, Photo Opps, Boat Dives
Brandon ColeA California sea lion plays with a sea star off La Paz.
Come to stroll the seaside Malecón (boardwalk) that stretches along the Sea of Cortez and for ceviche that’s muy rico. But most of all, come to La Paz to dive the waters off this spectacular stretch of Baja California Sur.
October is prime time to frolic with animated California sea lions off Los Islotes, home to a colony of more than 400 of the animals, as well as to snorkel with juvenile whale sharks that arrive to feast on plankton in the shallows of La Paz Bay. —Terry Ward
Operators: Divers Inn; The Cortez Club; The Dive Gurus; Sealion Dive Center
Related Reading: Why La Paz Should Be Your Next Dive Trip
Anilao, Philippines: Sea Slug Scavenger Hunt
Dive Highlights: Macro Critters, Photo Opps
Felipe BarrioOctober’s conditions make it easy to spot nudibranchs in Anilao.
Only divers would get excited by a moniker like “the Slug Capital of the Philippines,” which is the name bestowed upon Anilao, a small, scuba-centric coastal town roughly a three-hour drive from Manila, the capital city of the Philippines. The reefs offer every bit of biodiversity and beauty you’d expect, but the real magic just might be in the muck, which can be found in shades of brown, black and red. All that variety adds up to create enough habitats for 600 nudibranch species.
October brings choice conditions for enjoying the parade of macro life. The month falls at the end of high season, and toward the end of the rainy season. Visibility starts opening up to between 50 and 100 feet, making the hunt for tiny stuff that much easier and enjoyable.
Some of the biggest gets are also perhaps the easiest to identify thanks to their easy-to-remember resemblances. Few divers will retain the name Thecacera pacifica, but most everyone can remember “Pikachu.” This bright-yellow nudi has black tipping on its rhinophores and branchial plumes. It’s also big enough in size, around an inch, that it can be easily spotted and appreciated for its fun color. Then there’s Costasiella kuroshimae, aka Shaun the Sheep. This white-faced nudi with cartoon-like black bead eyes looks like the claymation character.
Many of the nudis, including Pikachu, can be seen on night dives, which the area is legendary for. The reefs and sands come alive with so much more, including hairy frogfish, flamboyant cuttlefish and weedy scorpionfish all on the hunt. —Brooke Morton
Operators: Aiyanar Resort; Buceo Anilao; Solitude Acacia Resort
Related Reading: 10 Reasons to Scuba Dive the Philippines
Where to Dive Next Month
South Australia, the Florida Keys, Chuuk Lagoon, La Paz and Anilao are five of the best scuba diving destinations in October.
Traveling at a different time? Click below to see dive trip recommendations for other months.
