- Best season
- March through October is the recommended window
Good to know
Good to Know
- Siargao diving is a day-boat affair out of General Luna, not a liveaboard destination — you won't need to book a liveaboard to dive here, but you also won't find true shore-entry diving off the beach for the main sites.
- The Blue Cathedral cavern dive is the headline site, but it genuinely calls for Advanced Open Water certification (and ideally some overhead-environment experience) — it's not a beginner add-on.
- March to June is the sweet spot for calm seas and best visibility; November to February (the amihan/northeast monsoon) can disrupt diving, especially on the island's eastern side.
- Compared to bigger-name Philippine dive destinations like Malapascua, Coron, or Tubbataha, Siargao's dive scene is still small and less thoroughly mapped — expect fewer boats at each site, but also less standardized site information, so it's worth confirming current conditions and exact site names directly with a local shop in General Luna.
- Siargao has real dive shop choice (roughly half a dozen named operators clustered in General Luna/Cloud 9), but it is not a high-competition market like Moalboal or Malapascua — expect fewer options and prices some reviewers describe as high for what you get.
- If freediving interests you, Siargao is a genuine option, not just an afterthought — some scuba shops run AIDA freediving courses alongside PADI, and there are dedicated freediving instructors offering Molchanovs/AIDA/SSI courses, including surf-specific apnea training.
- Divemaster training is available but less 'off-the-shelf' here than entry-level courses — confirm in advance whether a shop runs it on its normal schedule or only by special arrangement.
- If your main goal is the cheapest possible Open Water certification, some experienced divers suggest comparing prices with other Philippine dive hubs (e.g., Cebu-area destinations) before committing, since Siargao's limited shop count can mean less price competition.
Dive Sites And Conditions
- Access Summary
- Siargao diving is predominantly day-boat based out of General Luna, not liveaboard-dependent. Boat rides to sites typically run five to forty-five minutes, with most operators clustered in and around General Luna on the island's southern/eastern side. There is no meaningful shore-entry diving directly off the beach for the main sites — divers go out by small local boat (banca) for every dive, but return the same day, and liveaboards are not the standard way to dive this island (unlike, e.g., Tubbataha further south, which is genuinely liveaboard-only).
- Best Season Overall
- March through October is the recommended window, covering the dry season when seas are calmer and visibility is best (often 15–25m). March to May/June is considered peak for the calmest conditions and least boat traffic. The southwest monsoon (habagat, roughly June–October) can bring choppier seas and afternoon squalls but diving generally continues. The northeast monsoon (amihan, November–February) makes conditions harder, particularly for sites on the island's eastern side, and some operators scale back trips in this period.
- Site Inventory Note
- Formal dive-site cataloguing for Siargao is thin compared to established Philippine dive hubs — PADI's own site directory lists only a handful of named sites, and multiple sources describe the local dive scene as still young, with operators able to be counted on one hand and reefs correspondingly uncrowded.
Sites
Blue Cathedral (Cathedral Cavern)
- Type
- cavern/cave-reef
- Access
- Boat ride of under 30 minutes from General Luna, near Rock Island close to Cloud 9
- Best Season
- March–October (dry season conditions)
- Depth Range
- mooring around 17m, cavern ceiling starting near 22m, tunnel dropping to about 35m
- Marine Life
- Jackfish, emperors, barracudas; dramatic light-filtered cavern walls with coral and stalactite-like formations
- Notes
- Considered the signature dive of Siargao. Requires Advanced Open Water certification at minimum, and many operators want evidence of prior cavern/overhead-environment experience given the rocky entry, open Pacific swell, and dark, current-affected passages.
Daku Island Reefs / Daku Arch
- Type
- reef with a submerged swim-through arch
- Access
- Short boat ride from General Luna
- Best Season
- March–October
- Depth Range
- shallow to mid-depth reef
- Marine Life
- Dense schools of jacks and snapper, hard and soft coral cover, parrotfish, wrasse, angelfish, triggerfish, large fusilier aggregations
- Notes
- One of the most popular and beginner-through-advanced-friendly sites; open water divers can comfortably dive most of the reef here.
Shark Point
- Type
- sloping reef transitioning to a wall/drop-off
- Access
- Boat trip from General Luna
- Best Season
- March–October
- Depth Range
- varied, sloping into a drop-off
- Marine Life
- Excellent coral coverage and healthy reef fish; whitetip and blacktip reef sharks turn up on some dives but sightings are not guaranteed despite the name
- Notes
- Suited to intermediate and advanced divers given the varied depths.
Secret Garden
- Type
- reef, drift-style
- Access
- Boat trip from General Luna
- Best Season
- March–October
- Depth Range
- deeper reef environment
- Marine Life
- Dense, highly diverse coral environment
- Notes
- A more advanced site recommended for divers wanting something beyond the standard reef circuit.
Casulian
- Type
- reef
- Access
- Boat trip from General Luna
- Best Season
- March–October
- Depth Range
- shallow to mid-depth
- Marine Life
- Well-preserved hard coral coverage and macro life tucked into crevices
- Notes
- A broad, easy reef ideal for newer divers or a relaxed second dive of the day.
Pilar Twin Rocks / Pilar's Sanctuary
- Type
- reef, pelagic-oriented, current-driven
- Access
- Located in the northern part of Siargao — a longer boat ride than the General Luna cluster sites
- Best Season
- March–October, best when currents are manageable
- Depth Range
- not specified in detail
- Marine Life
- Parrotfish, clownfish, moray eels hiding in the coral; on good days, larger schooling pelagic species and occasional eagle rays
- Notes
- A protected sanctuary area. Diving it when currents are running requires Advanced Open Water certification.
Tato Wreck
- Type
- wreck
- Access
- Boat trip from General Luna area
- Best Season
- March–October
- Depth Range
- not specified in detail
- Marine Life
- Barracuda and other fish that have colonized the sunken fishing boat
- Notes
- Recommended for advanced divers exploring a sunken fishing vessel now taken over by marine life.
Rock Island / Stimpy's / Semi Bayan / Boomies (Site Cluster)
- Type
- reef
- Access
- Five to fifteen minutes from shore by boat — the closest cluster of sites to General Luna
- Best Season
- year-round visibility of 15–25m reported, best in dry season
- Depth Range
- roughly 10–15m, with an adjacent slope dropping to about 25m in the channel between Rock Island and Stimpy's
- Marine Life
- Stingray, cuttlefish, and reef fish; beginner-friendly coral heads and pinnacles, with more interest for experienced divers when swell brings light surge
- Notes
- These sites sit beside well-known surf breaks (Rock Island, Stimpy's, Jacking Horse near Cloud 9) and are used for both beginner and confined-water training dives.
Puyo and Seeco Reef
- Type
- reef
- Access
- Boat trip from General Luna
- Best Season
- March–October
- Depth Range
- not documented in detail
- Marine Life
- Not documented in detail in available sources
- Notes
- Named among Siargao's known dive sites but with little published detail beyond the name — worth asking a local dive center directly for current conditions.
Courses And Operators
- Operator Density
- Siargao has a modest but real spread of named dive operators, concentrated in and around General Luna (the island's tourism hub) rather than a single-shop monopoly, despite some shops' own marketing claiming to be the 'only' dive center on the island. Named operators identified include: Palaka Siargao Dive Center (General Luna/Poblacion 1, operating since 2013, PADI + AIDA), Sea Serenity Diving Center (General Luna), Ocean Tribe Siargao (Cloud 9/Catangnan, women-led, SSI-focused, conservation-oriented), Siargao Divers (beginner-focused Discover Scuba packages), and Marine Conservation Philippines (a conservation-volunteer dive program). A local directory (Siargao Local) lists 7 total diving/freediving/snorkeling businesses on the island. This is a small-to-moderate cluster compared to major Philippine dive hubs like Moalboal, Malapascua, or Puerto Galera — divers should expect fewer choices and correspondingly less price competition.
- Freediving Crossover
- Genuine freediving crossover exists and is a notable feature of Siargao's dive scene, not an assumption. Palaka Siargao Dive Center markets itself explicitly as a combined 'Freediving and Scuba Diving Centre' and teaches AIDA freediving courses (AIDA 1/2/3) alongside its PADI scuba curriculum, using the same instructor team and often the same boats/sites. Separately, at least one independent, dedicated freediving instructor (Blue Soul Freediving, based in the General Luna area) teaches Molchanovs, SSI Freediving, and AIDA courses, including a 'Surf-Apnea' course aimed specifically at surfers wanting better breath-hold and wipeout composure — a logical niche given Siargao's identity as a surf destination. The Blue Cathedral dive/free-dive site near General Luna is cited by multiple sources as notable for both scuba divers and freedivers.
- Certifying Bodies And Levels
- PADI is the dominant certifying body on Siargao. Local dive centers commonly offer the full PADI recreational track: Discover Scuba Diving (try-dive, no certification), PADI Scuba Diver, PADI Open Water Diver, PADI Advanced Open Water Diver, Emergency First Response (EFR), and PADI Rescue Diver. Divemaster-level training exists but is less standard as a walk-in offering — Marine Conservation Philippines (a conservation-volunteer program, not a typical walk-in shop) explicitly offers it, noting it costs significantly more than entry-level courses, and it's otherwise available 'at special request' at some shops rather than as an advertised default. SSI is also present as an alternative certifying body through at least one operator (Ocean Tribe Siargao), which offers SSI Open Water Diver, Basic Diver, Diver Stress & Rescue, and Divemaster (including a Divemaster Upgrade path requiring logged dives).
Typical Cost
- PADI Discover Scuba Diving
- ₱3,700
Confirmed introductory try-dive price (no certification) at Palaka Siargao Dive Center; this has reportedly held steady for several years per shop owner correspondence.
- General Note
- A specific, currently-advertised full PADI Open Water Diver package price (multi-day course incl. all dives, materials, and boat fees) could not be confirmed via live shop pricing pages during this research. A Tripadvisor reviewer explicitly complained that Open Water course costs on Siargao run high, attributing it to limited competition, and recommended certifying elsewhere in the Philippines to save money.
Conservation Volunteer Course Fees
- Currency Local
- USD
- Amount Local Range
- 65-85 USD equivalent
- Note
- Marine Conservation Philippines charges most PADI course fees (materials + PADI cert fee only, since instruction is free for their own volunteers) at either $65 or $85, with Divemaster certification priced notably higher. This applies only to their volunteer program, not general walk-in tourists.
AI-generated estimateData refreshed July 2026
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Data last updated July 2026 · Verify anything important.