Scuba Diving at Nonoc Sanctuary

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.

Evening condition tracking at Nonoc Sanctuary features an air temperature of 31°C. We have recorded wave heights measuring 0 m during this period. These figures outline the environmental parameters currently present.

Dive Site Location & Key Facts

Everything you need to know about this dive site.

Coordinates9.2471, 123.5753
Site Characteristics
Ocean
Max Depth--
Entry Typeboat
Water Typesalt
Dive Types
--

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 Excellent

9/10
Confidence: 8/10
Indicates meteorological model agreement and data availability.

Best Dive Window

07:00 - 14:00

Optimal conditions expected

06:12
18:45
H: 10:45
L: 16:20
Air / Sea Temp
31° / 31°
Wave Height
0.3 m
Wind Speed
12 km/h WSW
Rain Chance
100%

Current conditions near Nonoc Sanctuary show 31° air, 31° sea temperature, 0.3 m waves, and 12 km/h wind. Forecast data is refreshed regularly to ensure accuracy.

Radius: ~12km
Updated: Jun 11, 2026, 11:08 local time
MARINE: OPEN-METEOWEATHER: YR.NO

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

91/100
Excellent

Scores combine air & water temps, waves, wind & rainfall for overall conditions.


BEST MONTHS TO DIVE

APR
MAY
JUN
DIVE SCORE
(0–100)
87
JAN
83
FEB
87
MAR
92
APR
92
MAY
90
JUN
82
JUL
87
AUG
86
SEP
90
OCT
87
NOV
86
DEC
AIR TEMP (°C)
27
27
27
28
29
28
28
28
28
28
28
27
WAVES (M)
0.5
0.6
0.5
0.3
0.3
0.4
0.7
0.6
0.6
0.4
0.5
0.4
WIND (KM/H)
19
22
20
18
16
15
20
19
18
15
18
18
RAIN (MM)
4.2
6.6
4.1
3.5
5.7
7.5
6.1
3.1
5.4
7.7
7.7
8.9
DIVE SCORE GUIDE (0–100)
Excellent (90–100)
Very Good (80–89)
Good (70–79)
Moderate (50–69)
Poor (30–49)
Not Recommended (0–29)

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

Recent conditions suggest the water at Nonoc Sanctuary remains near 31°C (87°F), offering typical conditions for the area. Surface air temperatures are resting at 31°C (88°F).

Weather models indicate a small drop in surface temperatures later this week. Cooler days are ahead; you might want a warmer option for later in the week. A neoprene vest or hood can add flexibility if temperatures feel cooler underwater.

Most divers exploring waters at this temperature rely on dive skin or rash guard for effective insulation. Water temperature is only one factor influencing overall comfort during a dive.

Nonoc Sanctuary conditions last reviewed: 11:08 local time (UTC+8), Jun 11, 2026

Due to technical issues with our weather providers, data hasn't been fetched for over 48 hours. The data above reflects the conditions at the time of the last successful fetch.

Emergency & Medical Support

Essential information to help you plan your dive trip to Nonoc Sanctuary.

Hyperbaric Chamber

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
24/7 Available

Divers Alert Network

Diving emergency assistance available through DAN World.

+1-919-684-9111
  • 24/7 emergency hotline
  • Diving medical assistance
  • Evacuation coordination
View official DAN emergency contacts

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 Centers Near Nonoc Sanctuary

Reef Turtle Dive Center
13.5 km away

Reef Turtle Dive Center

5| 362 reviews
Today: 07:30 - 17:00
Sun07:30 - 17:00
Mon07:30 - 17:00
Tue09:00 - 17:00
Wed07:30 - 17:00
Thu09:00 - 17:00
Fri07:30 - 17:00
Sat07:30 - 17:00
Vibrations Dive Center

Vibrations Dive Center

5| 240 reviews
13.6 km
Sea Pearl Divers

Sea Pearl Divers

4.9| 406 reviews
13.4 km
Dive Point Siquijor

Dive Point Siquijor

4.9| 136 reviews
13.5 km
Island Vibes Explorers Diving Center

Island Vibes Explorers Diving Center

13.5 km 4.5· 100 reviews
Deep Zone Dive Center

Deep Zone Dive Center

32.3 km 4.5· 219 reviews
Dauin Diving Center

Dauin Diving Center

37.7 km 5· 142 reviews
French Touch Diving

French Touch Diving

42.5 km 4.9· 877 reviews

Nearest Airports

Nearest airports to help plan travel to this dive area.

Sibulan AirportDGT
32 km
Bohol-Panglao International AirportTAG
42 km
Dipolog AirportDPL
76 km
💵Currency:PHP

Search Flights

Check available flights and routes on Expedia, using the nearby airports listed in this section.

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Frequently 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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