Koh Phi Phi · Andaman Sea
Koh Phi Phi Diving Guide 2026: PADI Courses & Top Dive Sites
Koh Phi Phi sits at the heart of Thailand's Andaman Sea, offering some of Southeast Asia's most accessible and rewarding diving. From sheltered reefs teeming with anemonefish to dramatic limestone walls where leopard sharks patrol, Phi Phi delivers the full spectrum of underwater experiences across depths from 5 to 30 metres. Whether you're discovering scuba for the first time or pushing deeper with advanced certifications, calm waters year-round and visibility reaching 30 metres during peak season create the perfect conditions to explore one of Asia's most biodiverse marine ecosystems.
Why Dive in Koh Phi Phi
Koh Phi Phi punches above its weight. Most visiting divers compare it favourably to far costlier destinations like the Maldives or liveaboard safaris to the Similan Islands, yet courses run 30-40% cheaper and boat operations maintain an intimate, small-group ethos that prioritizes safety and learning. You'll encounter leopard sharks reliably between June and September—a sighting that mesmerizes most divers—alongside blacktip reef sharks, hawksbill turtles, moray eels, giant octopus, lionfish, and seasonal whale sharks during plankton blooms. Water temperature holds steady at 27-30°C year-round, eliminating the guesswork. Visibility ranges from 20-30 metres in high season (October to May) to 10-15 metres during monsoon months, both offering distinct marine life viewing opportunities.
Below the surface
Top Dive Sites Around Koh Phi Phi
Six primary sites dominate the Phi Phi diving circuit, each with distinct character and marine life signatures. All lie within 30-45 minutes by speedboat from the dive centre.
Bida Nok
5-30m · All levels
The most photographed site in Phi Phi. A dramatic outer rock pile drops to 30 metres with coral-encrusted pinnacles, overhangs, and swim-through caverns at 15-20m. Leopard sharks, turtles, and schooling barracuda are common. Visibility typically 15-22m. Current mild except during tidal exchanges.
Bida Nai
5-24m · All levels
Bida Nok's fraternal twin, slightly shallower. Exceptional for macro critters: frogfish, nudibranchs, and tiny gobies hide among soft corals and gorgonian fans. The sheltered eastern side hosts an anemone lagoon at 5-15m—thousands of carpet anemones and resident clownfish make this an iconic beginner site.
Hin Klai (Shark Point)
10-26m · Advanced+
A small submerged pinnacle famous for leopard shark encounters, particularly during June-September plankton blooms. Blacktip reef sharks and occasional nurse sharks add to the apex predator roster. Strong currents common; best dived by experienced Open Water or Advanced divers.
Anemone Reef
5-25m · Open Water+
A sprawling reef system northeast of Bida Nai offering multiple entry points and a gradual slope ideal for skill-building dives. Crowned by a gentle sandy shelf at 8m housing thousands of anemones and clownfish, then transitioning to coral formations and deeper channels. Seahorses, lionfish, and frogfish common.
Koh Phi Phi Ley Walls
5-20m · All levels
The dramatic limestone cliffs of Phi Phi Ley drop directly into the sea, creating scenic wall dives along the island's eastern flank. Depths 5-20m with an abundance of soft corals, gorgonians, and schooling fusiliers. Turtles frequent the shallows. Visibility 18-28m during calm months.
Viking Cave & Loh Samah Bay
5-18m · Open Water+
Sheltered bay beneath the famous Viking Cave, dived primarily for its unique geography and historical intrigue. Depths top out around 18 metres; sand and rubble bottom transitions into coral heads. Marine life includes trevally, grouper, and smaller reef residents.
PADI Courses in Koh Phi Phi
Four course pathways suit every experience level, from absolute beginners to certified divers seeking specialization.
Discover Scuba Diving (Try Dive)
1 day, 2 dives · No cert needed, ages 10+
From THB 3,800
Your first underwater breath without commitment. Pool intro covering mask clearing and regulator breathing, then descend to 12 metres on two supervised sea dives at beginner-friendly shallow reefs.
Book this course →PADI Open Water Certification
3 days, 4 dives · Beginner
From THB 14,500
The industry standard. Three days of theory, confined-water drills, and four ocean dives progressing to 18 metres. Earn a PADI card valid worldwide for recreational diving to 40 metres.
Book this course →PADI Advanced Open Water
2 days, 5 dives · Open Water+
From THB 11,500
Extend your depths to 30 metres and master specialized skills. Five Adventure Dives across deep diving, navigation, and rescue techniques.
Book this course →Fun Diving for Certified Divers
Half-day (2 dives) or full-day · Open Water+
From THB 2,800 per 2 dives
No training, no exam—pure exploration. Choose your sites: Bida Nok for sharks, Anemone Reef for macro, Hin Klai for deep blue encounters.
Book this course →
Best Time to Dive Phi Phi
Koh Phi Phi operates year-round, but seasonal patterns significantly influence visibility, weather, and marine life encounters. October through May represents high season: warm, dry weather, minimal rainfall, calm seas, and visibility reaching 20-30 metres. February through May peak as the optimal window. June through September, monsoon brings rough seas and 10-15 metres visibility, but plankton blooms attract leopard sharks in staggering numbers and whale shark sightings spike. Water temperature remains tropical year-round (27-30°C). The Similan Islands liveaboards, reachable from Phi Phi via transfers, operate exclusively November to May.
Marine Life You'll See
Leopard sharks dominate the encounter list, especially during monsoon months—expect sightings on 60-70% of dives June-September. Blacktip reef sharks patrol the walls year-round. Hawksbill turtles graze the shallow reefs. Moray eels hide in crevices at Bida Nok and Hin Bida. Giant octopus emerge at dawn; frogfish camouflage themselves at Anemone Reef. Seahorses anchor in seagrass beds. Schooling barracuda and trevally create dramatic mid-water scenes. Whale sharks appear during plankton blooms (February-April and July-August). Hard corals and soft corals including vivid gorgonian fans paint the walls.
Our Dive Centre on Koh Phi Phi
Phi Phi Paradise partners with PADI 5-Star Instructor Development Centres on the island. Our instructor roster speaks English, French, Thai, and Spanish fluently. We cap student-to-instructor ratios at 4:1 during PADI courses, often running 2:1 or 1:1. Equipment reflects professional-grade standards: regs by Scubapro, Aqualung, Mares; BCDs from Aqualung or Cressi. Nitrox certification and fills available. All gear undergoes monthly service audits. Dive briefings occur 30 minutes before departure via WhatsApp, email, or in-person. We maintain an oxygen kit onboard all boats and staff trained in first aid; the decompression chamber at Phuket Provincial Hospital is 45 minutes away by sea.
Frequently Asked Questions
- Do I need a diving license to dive in Koh Phi Phi?
- No certification required for Discover Scuba Diving (try dive)—you'll complete an intro session, then dive under direct instructor supervision to 12 metres on two recreational dives. For fun diving beyond the resort, PADI Open Water certification or equivalent is mandatory. Thailand's National Park regulations enforce this. Once certified, your PADI card is valid worldwide for ten years. If you're non-certified but keen, Discover Scuba Diving is your entry point.
- What's the best time of year to dive in Koh Phi Phi?
- October to May is high season: calm seas, 20-30m visibility, warm water (28-30°C). February through May peak as optimal. June to September brings rougher conditions and 10-15m visibility, but plankton blooms trigger leopard shark encounters on most dives and whale sharks become frequent. Diving operates year-round; choose based on weather tolerance and target marine life.
- What marine life can I see while diving in Phi Phi?
- Leopard sharks are the standout—on most dives June-September, less frequent but present October-May. Blacktip reef sharks, hawksbill turtles, giant octopus, moray eels, lionfish, seahorses, and frogfish round out the larger megafauna. Macro divers love nudibranchs, pipefish, gobies. Schooling barracuda, trevally, and fusiliers create dramatic scenery. Whale sharks appear during plankton blooms.
- How much does diving in Phi Phi cost?
- Discover Scuba Diving: THB 3,800 per person. PADI Open Water Certification: THB 14,500 (3 days, 4 dives). PADI Advanced Open Water: THB 11,500 (2 days, 5 dives). Fun Diving: THB 2,800 per 2-dive half-day. All prices include National Park permits (THB 600 per diver per day), boat fuel, instructor fees, and equipment rental. Nitrox fills cost THB 300 extra per dive.
- How deep are the dive sites in Koh Phi Phi?
- Phi Phi's six main sites range 5 to 30 metres depth. Discover Scuba divers are limited to 12 metres. Open Water-certified divers can explore to 18 metres. Anemone Reef's shallow lagoon sits 5-15 metres—ideal for novices. Bida Nok and Hin Klai drop to 25-30 metres, reserved for Advanced or experienced Open Water divers. Most sites offer gentle sloping entry and shallower zones (5-15m) for skill-building.
- Can beginners dive at Koh Phi Phi?
- Absolutely. Discover Scuba Diving accepts ages 10 and up with no prior experience. You receive poolside instruction, then supervised dives to 12 metres on shallow, reef-friendly sites. If you want a permanent certification card, the PADI Open Water course (3 days, 4 dives) covers everything from physics to buoyancy control. Water temperature (27-30°C) and calm conditions October-May make Phi Phi an ideal learning destination.
- How do I get to Koh Phi Phi for diving?
- Ferry from Phuket Town (Rassada Pier, 2 hours): ferries depart 08:30 and 14:00 daily. Ferry from Krabi (Klong Jilad Pier, 1.5 hours): morning departure 10:30. Both arrive at Koh Phi Phi Don's main village. Book accommodation and diving in advance. We recommend 3+ nights to complete PADI Open Water (3-day course). WhatsApp us 2-3 days ahead to confirm course dates and current conditions.
- Is diving in Phi Phi safe for solo travelers?
- Yes. Dive shops pair solo divers with instructors or other students as safety buddies during courses and fun dives. PADI safety standards mandate buddy systems; you'll never descend alone. All boats carry oxygen kits and first-aid supplies. Instructors are trained in rescue and first aid. Thailand's emergency response (rescue boats, helicopters, hyperbaric chambers at Phuket Provincial Hospital) is within 45 minutes.