
Diving atNonoc Sanctuary (Philippines)
Nonoc Sanctuary stands as a protected underwater haven within the Philippines' Siquijor Island, setting it apart from more general dive spots. This marine sanctuary actively safeguards its vibrant coral ecosystems and diverse aquatic inhabitants. Visitors encounter an intentionally preserved environment, making it an excellent location for both divers and snorkelers seeking a pristine experience.
Current morning readings from Nonoc Sanctuary indicate an air temperature of 30.5°C. Surface wave heights are averaging around 0.1 m at this time. These local measurements provide a baseline for your daily dive planning.
Dive Site Location & Key Facts
Everything you need to know about this dive site.
Dive Site Overview
A distinct underwater landscape defines Nonoc Sanctuary, designated a protected marine area actively preserving its intricate environment. Divers encounter a varied topography, beginning with a gradual sandy slope that transitions into a thriving coral reef.
Shallower sections feature particularly beautiful coral formations, including extensive branching and plate corals, making them suitable for snorkelers as well as divers exploring deeper areas. A significant variety of hard and soft corals thrives here, providing essential shelter for a wide array of reef fish and contributing substantially to the site's rich biodiversity. While some areas reach maximum recreational limits, the site is generally shallow, often maintaining a comfortable profile for extended bottom times and relaxed exploration.
Varied coral structures create numerous hiding spots for macro life, often revealing nudibranchs, crabs, and juvenile fish. An entrance fee applies for access, directly supporting the conservation efforts that maintain this vibrant ecosystem and fund ongoing monitoring.
This protected status ensures a healthy marine habitat for countless species, justifying the investment for many visitors. Its topography generally offers gentle slopes, creating a relaxed dive profile conducive to exploring abundant macro life and observing schooling fish behavior.
Such conditions make it an accessible and rewarding destination for many divers seeking pristine underwater encounters and a comprehensive view of a well-managed reef system.
Nonoc Sanctuary
Conditions are Good
Best Dive Window
Optimal conditions expected
Current conditions near Nonoc Sanctuary show 30° air, 31° sea temperature, 0.2 m waves, and 19 km/h wind. Forecast data is refreshed regularly to ensure accuracy.
Best Time to Dive
Considering the regional climate patterns, Nonoc Sanctuary is most favorably visited when conditions are calm and clear. The months of April, May, and June consistently show excellent dive scores, with minimal rain averaging between 3.5 to 7.5 mm and relatively low wave heights, often below 0.4 meters. Air temperatures during this period are pleasantly warm, ranging from 28°C to 28.5°C (82-83°F). October, November, December, and January also present excellent conditions, characterized by high dive scores and air temperatures around 27°C to 28°C (81-82°F). During these months, wave heights remain manageable. While dive scores are still good from February to March and July to September, increased wave heights, potentially reaching up to 0.7 meters (2.3 ft) in July, could lead to choppier surface conditions, affecting boat travel or overall comfort, despite relatively low rainfall.
PEAK SEASON SCORE
Scores combine air & water temps, waves, wind & rainfall for overall conditions.
BEST MONTHS TO DIVE
Monthly records compiled from satellite and marine observation nodes over the last 3 years. Data provided by Open-Meteo and MET Norway.
Dive Experience & Conditions
Nonoc Sanctuary typically offers clear waters, contributing to an enjoyable and visually rich dive experience. This marine sanctuary is noted for its generally mild conditions, making it accessible for divers across various skill levels. Current dynamics here are not consistently reported as strong, which aligns with its designation as a shallow, snorkeling-friendly site. However, local conditions can vary with tides and weather patterns. Water temperatures in this region are generally warm, typically hovering around 27-30°C (81-86°F), though site-specific data isn't always available. Such comfortable temperatures mean most divers find a 3mm wetsuit or a rash guard sufficient for thermal protection.
Dive Difficulty & Safety Guidelines
Diving at Nonoc Sanctuary requires adherence to established marine park rules to protect its delicate ecosystem. As a designated marine sanctuary, respecting the 'no-touch' policy for all marine life and corals is paramount. Buoyancy control is essential to prevent accidental damage to the extensive coral formations. While no specific inherent hazards like strong, unpredictable currents are typically reported for the sanctuary itself, divers should always assess real-time conditions. Nearby sites can experience strong currents, so remaining vigilant and consulting with local dive operators about daily conditions is prudent. An entrance fee applies for access, which directly supports the sanctuary's ongoing conservation efforts.
Recommended Equipment
- Dive Computer
- DSMB
This gear list is based on verified equipment signals for Nonoc Sanctuary, Philippines. Always confirm final gear choices with your dive operator, guide, or liveaboard.
Recommended Dive Suit
Divers visiting Nonoc Sanctuary today can expect water conditions around 31°C (87°F). Surface air temperatures are resting at 30°C (87°F).
For the majority of recreational dives here, dive skin or rash guard should provide suitable protection.
Surface temperatures may decrease slightly later in the week. Cooler days are ahead; you might want a warmer option for later in the week. Some divers prefer carrying a slightly thicker suit as a backup.
Emergency & Medical Support
Essential information to help you plan your dive trip to Nonoc Sanctuary.

Hyperbaric chambers are a critical part of dive safety infrastructure. Availability varies significantly by region, and not all dive areas have immediate access.
Before diving, it's recommended to:
- confirm nearest medical facilities
- check emergency procedures with local dive operators
- ensure dive insurance covers evacuation if required
Divers Alert Network
Diving emergency assistance available through DAN World.
+1-919-684-9111- 24/7 emergency hotline
- Diving medical assistance
- Evacuation coordination
Emergency contacts are provided for reference. Always verify local emergency services before diving.
Marine Life at Nonoc Sanctuary
Entering the water, divers are immediately struck by the abundance of diverse corals. A big variety of hard and soft corals carpet the seafloor, creating a vibrant backdrop. Reef fish school in all colors, adding dynamic movement to the scene. Excellent opportunities for macro sightings exist, with smaller inhabitants nestled among the corals. Turtles are also commonly sighted, gliding gracefully through the protected waters. This protected environment fosters a healthy population of marine creatures, making every dive a discovery of intricate life.
Dive Sites Near Nonoc Sanctuary
View all dive sites in PhilippinesDiscover more underwater gems in this area.
Dive Centers Near Nonoc Sanctuary
Working Hours
Today: 07:30 - 17:00
Vibrations Dive Center
Sea Pearl Divers
Dive Point Siquijor
Island Vibes Explorers Diving Center
Deep Zone Dive Center
Dauin Diving Center
French Touch Diving
Nearest Airports
Nearest airports to help plan travel to this dive area.
Search Flights
Check available flights and routes on Expedia, using the nearby airports listed in this section.
Search Flights on ExpediaFrequently Asked Questions
What kind of dive site is Nonoc Sanctuary?
Nonoc Sanctuary is a protected marine area in Siquijor Island, Philippines. It features a sandy slope transitioning to diverse coral reefs, suitable for both diving and snorkeling due to its relatively shallow profile and abundant marine life.
Is Nonoc Sanctuary suitable for beginners?
Yes, its designation as a 'shallow site' and generally mild conditions make it well-suited for beginner divers and snorkelers. Gentle slopes and a protected environment provide a comfortable introduction to the underwater world.
What marine life can I expect to see?
You can expect to see a big variety of hard and soft corals, along with numerous reef fish schooling in various colors. Macro photography is rewarding here, and turtles are common sightings.
Are there any fees to dive here?
Yes, a small entrance fee is typically required to access Nonoc Sanctuary. Funds collected directly support the conservation and protection of the marine area.
What are the typical diving depths at Nonoc Sanctuary?
Nonoc Sanctuary is generally a shallow site, with diving depths often ranging from approximately 5 meters (16 ft) to 30 meters (100 ft). These depths accommodate a wide range of diver certifications.
What about currents at this dive site?
Current dynamics at Nonoc Sanctuary are not consistently reported as strong, aligning with its suitability for snorkelers and beginners. However, local conditions can vary, so checking with a local dive operator is always recommended.
Is Nonoc Sanctuary good for snorkeling?
Absolutely. Snorkelers will find the site great, especially in its shallower sections. Clear waters and vibrant coral gardens are easily enjoyed from the surface.
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Nonoc Sanctuary
Conditions are Good
Best Dive Window
Optimal conditions expected
Current conditions near Nonoc Sanctuary show 30° air, 31° sea temperature, 0.2 m waves, and 19 km/h wind. Forecast data is refreshed regularly to ensure accuracy.












