Scuba Diving at Compass House Reef

Diving atCompass House Reef (Timor Leste (East Timor))

A gentle slope defines Compass House Reef, commencing in shallow areas before extending to expansive sandy bottoms. Diverse diving experiences emerge from this topography, combining vibrant coral gardens with engaging muck diving opportunities. Situated on Atauro Island, within the Coral Triangle, the site belongs to a region famed for exceptional marine biodiversity. Its structure presents a comprehensive underwater exploration.

As evening covers Compass House Reef, the local air temperature is measured at 28°C. The current wave height at the surface is recorded at 0.8 m. These late-day readings characterize the surface conditions for the night.

Dive Site Location & Key Facts

Everything you need to know about this dive site.

Coordinates-8.2284, 125.6098
Site Characteristics
Sandy Bottom
Max Depth40m / 131ft
Entry Typeboat
Water Typesalt
Dive Types
DeepDriftReef

Dive Site Overview

Beneath the surface, Compass House Reef presents a dynamic underwater landscape, appealing to varied diving preferences. Initial descents reveal a healthy coral reef, flourishing in shallower waters, presenting vivid colors and intricate structures for closer inspection.

This vibrant zone, teeming with hard and soft corals, provides an immediate visual spectacle, often engaging divers right from the start. Beyond this thriving shallow ecosystem, the reef gradually transitions into expansive sandy slopes. These slopes extend significantly, allowing for deeper exploration down to a maximum recorded depth of 40 m / 131 ft.

The character of the dive noticeably changes here. Deeper sandy terrains become prime territory for muck diving, inviting macro enthusiasts to slow down and meticulously seek unique critters hidden within the substrate.

It's a different rhythm of exploration, focused on discovery in often overlooked environments. Divers here encounter a dual environment, appreciating both the sweeping beauty of coral ecosystems and engaging in a focused search for specific, often elusive, marine life.

This combination allows for a comprehensive underwater journey. Furthermore, conditions often permit exhilarating drift diving. Natural currents frequently guide divers effortlessly along the reef's contours, covering more ground with ease and adding an element of dynamic exploration.

Such active water movement defines a significant part of the experience, making each dive distinct and often allowing for extensive visual coverage of both reef and sandy habitats. The site's diverse topography ensures that whether seeking vibrant reefscapes or subtle macro wonders, there's ample opportunity for discovery.

Compass House Reef

Conditions are Good

7/10
Confidence: 8/10
Indicates meteorological model agreement and data availability.

Best Dive Window

Optimal conditions expected

06:12
18:45
H: 10:45
L: 16:20
Air / Sea Temp
28° / 29°
Wave Height
0.9 m
Wind Speed
36 km/h ESE
Rain Chance
0%

Current conditions near Compass House Reef show 28° air, 29° sea temperature, 0.9 m waves, and 36 km/h wind. Forecast data is refreshed regularly to ensure accuracy.

Radius: ~12km
Updated: Jun 14, 2026, 08:28 local time
MARINE: OPEN-METEOWEATHER: YR.NO

Best Time to Dive

Planning a dive to Compass House Reef reveals optimal conditions often scoring 'Excellent' during specific periods, particularly April and November. These months typically experience lower wind speeds and reduced wave heights, leading to calmer surface conditions. Air temperatures remain consistently warm, ranging approximately 27-30°C / 81-86°F year-round. A drier season, extending from May through October, sees minimal rainfall, often less than 1 mm monthly. Conversely, wetter months, from November to April, experience increased precipitation, with December often recording around 6 mm. Divers seeking the calmest, clearest conditions will likely find drier periods more appealing, though good diving is available throughout much of the year.

PEAK SEASON SCORE

91/100
Excellent

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


BEST MONTHS TO DIVE

APR
OCT
NOV
DIVE SCORE
(0–100)
81
JAN
79
FEB
87
MAR
92
APR
83
MAY
82
JUN
81
JUL
79
AUG
83
SEP
91
OCT
94
NOV
87
DEC
AIR TEMP (°C)
28
28
28
28
29
28
27
27
28
29
30
29
WAVES (M)
0.8
0.8
0.6
0.4
0.7
0.8
0.8
0.8
0.7
0.5
0.4
0.5
WIND (KM/H)
21
21
18
15
23
23
24
25
23
18
15
16
RAIN (MM)
4.4
4.9
3.6
3.1
1.1
0.5
0.7
0.1
0.2
0.4
1.5
6.0
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

Warm tropical waters are a consistent feature at Compass House Reef, generally conducive to extended bottom times, typically ranging from 22-27°C / 72-81°F. Entering by boat positions divers directly over its sloping reef structure. Currents, highlighted by a 'drift' tag, are a notable characteristic, often guiding the dive along the reef's natural path. Divers should be comfortable with active water movement, as this makes the experience dynamic and allows covering a wider area. Visibility varies with daily conditions and recent weather patterns; clear days offer expansive views while other times demand closer attention. Healthy coral and extensive sandy patches create distinct visual experiences, from bustling reef life to subtle observations of muck-dwelling organisms. Conditions here provide a continuous, evolving exploration.

Dive Difficulty & Safety Guidelines

Prudent diving at Compass House Reef involves maintaining awareness, notably due to potential drift currents. Employing proper buoyancy control is crucial, protecting healthy coral in shallower sections and managing movement over sandy slopes. Carrying a surface marker buoy (SMB) is a standard safety practice, especially during drift dives, ensuring visibility to the dive boat upon ascent. A dive computer proves essential for tracking bottom time and managing depth, aiding safe decompression limits when exploring deeper areas. No specific hazards are consistently reported, but adherence to general safe diving practices and listening to local dive guide briefings remains advised.

Recommended Equipment

Deep dive hazard. Increased narcosis and gas consumption risk.

Current and surface separation risk. Local briefing strongly recommended.

  • Dive Computer
  • DSMB
  • Primary & Backup Lights
  • Reel / Spool

This gear list is based on verified equipment signals for Compass House Reef, Timor Leste (East Timor). Always confirm final gear choices with your dive operator, guide, or liveaboard.

Recommended Dive Suit

With water temperatures around 29°C (84°F), many divers find a 2-3mm shorty or light wetsuit provides comfortable protection.

Local conditions can vary slightly across different parts of the same dive site.

Conditions are expected to stay fairly consistent in the days ahead.

Compass House Reef conditions last reviewed: 08:28 local time (UTC+8), Jun 14, 2026

Emergency & Medical Support

Essential information to help you plan your dive trip to Compass House Reef.

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 Compass House Reef

Life flourishes across Compass House Reef's coral and sandy habitats, supporting a diverse array of marine species. Vibrant reef fish, from scorpionfish and boxfish to puffer fish and angelfish, animate shallower coral gardens. Trumpetfish and parrotfish are common sightings, blending into the reef's intricate tapestry. Green turtles frequently glide gracefully through the water, especially near healthy coral formations. Along the sandy slopes, environments shift, offering opportunities to observe creatures like ribbon eels and elusive pipefish, camouflaging expertly against the substrate. This contrast in habitats creates a rich hunting ground for both macro enthusiasts and wide-angle photographers.

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Image contributors:Yellow.Cat, Ewa Barska
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Nearest Airports

Nearest airports to help plan travel to this dive area.

Presidente Nicolau Lobato International AirportDIL
36 km
Baucau AirportBCH
92 km
Commander in Chief of FALINTIL, Kay Rala Xanana Gusmão, International AirportUAI
124 km
💵Currency:USD

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Frequently Asked Questions

What types of diving are available at Compass House Reef?

Compass House Reef offers a versatile diving experience, primarily featuring reef diving along its coral slopes and muck diving in the deeper sandy areas. It's also known for drift diving due to prevailing currents, adding a dynamic element to explorations.

What is the maximum depth at Compass House Reef?

The reef transitions from shallow coral to sandy slopes, allowing exploration to its full extent. Divers can choose to stay shallow or investigate deeper muck areas, which extend considerably.

How do divers access Compass House Reef?

Divers typically access Compass House Reef via boat. Boat access allows for convenient entry directly over the dive site and facilitates drift dives with a coordinated pick-up.

What kind of marine life can be seen there?

Diverse marine life inhabits the site, including various reef fish like angelfish and parrotfish, as well as green turtles. For macro enthusiasts, ribbon eels and pipefish are common sightings, especially in the sandy bottom areas.

When is the best time of year to dive at Compass House Reef?

Optimal conditions, often rated 'Excellent,' are typically found in April and November, characterized by lower wind speeds and less rain. However, the site offers good diving throughout most of the year, particularly during the drier season from May to October.

Are there any specific safety considerations for this dive site?

Given the potential for drift, divers should be comfortable with currents and consider carrying a surface marker buoy (SMB). Good buoyancy control is essential to protect the delicate coral and navigate the different reef terrains safely.

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