Scuba Diving at Deacon's Reef

Diving atDeacon's Reef (Papua New Guinea)

Deacon's Reef presents a notable Papua New Guinea dive experience, defined by its varied topography. A sloping wall serves as the main feature, gradually descending into deeper sections. Supporting multiple scuba dive types, depths average 15 m (49 ft) to a reported maximum of 25 m (82 ft). Divers find ample opportunity for both wide-angle and macro exploration.

Tonight's objective overview for Deacon's Reef shows an air temperature of 25.5°C. The measured surface conditions include wave heights around 0.6 m. This environmental data is logged for the close of the day.

Dive Site Location & Key Facts

Everything you need to know about this dive site.

Max Depth--
Entry Type--
Water Type--
Dive Types
ReefWall

Dive Site Overview

Exploring Deacon's Reef offers a glimpse into a key part of Milne Bay's underwater heritage. Named for Kevin Deacon, a foundational Australian underwater photographer and diver, the site underscores the rich biodiversity found within the Coral Triangle, an area recognized for its exceptional marine species diversity.

Early diving pioneers like Bob Halstead played a crucial role in developing this Papua New Guinea region for diving, emphasizing both its pristine reef structures and specialized muck diving opportunities. Divers visiting the northern coast of Milne Bay, where Deacon's Reef is located, can anticipate vibrant coral gardens and the possibility of pelagic encounters. It also provides excellent conditions for the 'critter' hunting that has brought Milne Bay widespread recognition among macro enthusiasts.

A healthy, sloping wall presents an impressive display of extensive hard and soft corals, complemented by massive sponges. Exploring its contours reveals diverse macro life nestled among coral formations.

A compelling environment for varied underwater exploration results, from observing small invertebrates to scanning the blue for larger visitors. Combining healthy reef and macro potential makes it a versatile dive profile.

Deacon's 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
26° / 27°
Wave Height
0.6 m
Wind Speed
36 km/h S
Rain Chance
50%

Current conditions near Deacon's Reef show 26° air, 27° sea temperature, 0.6 m waves, and 36 km/h wind. Forecast data is refreshed regularly to ensure accuracy.

Radius: ~12km
Updated: Jun 14, 2026, 13:54 local time
MARINE: OPEN-METEOWEATHER: YR.NO

Best Time to Dive

Diving at Deacon's Reef is generally viable year-round, offering excellent conditions for much of the year. Early months, from January to April, consistently show excellent dive scores, with average air temperatures around 27-28°C (81-82°F) and lower rainfall, typically ranging from 3-9 mm. Wind speeds during this period tend to be lighter, between 13-17 km/h (8-11 mph). As the year progresses into the mid-months, particularly July through September, dive scores are rated as good; these periods might see slightly increased wave heights up to 0.6 meters (2 ft) and average wind speeds reaching 22 km/h (14 mph). Despite seasonal shifts, water temperatures remain reliably warm, typically 26-29°C (79-84°F), ensuring comfortable diving throughout the year. For optimal calm conditions and high visibility, targeting the 'Excellent' dive score periods is often preferred.

PEAK SEASON SCORE

94/100
Excellent

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


BEST MONTHS TO DIVE

JAN
FEB
DEC
DIVE SCORE
(0–100)
94
JAN
94
FEB
93
MAR
91
APR
75
MAY
84
JUN
81
JUL
83
AUG
79
SEP
87
OCT
91
NOV
94
DEC
AIR TEMP (°C)
28
28
28
27
27
26
26
26
26
26
27
28
WAVES (M)
0.2
0.2
0.2
0.2
0.5
0.5
0.6
0.6
0.6
0.4
0.4
0.2
WIND (KM/H)
16
17
15
14
19
20
22
23
22
18
17
15
RAIN (MM)
4.4
3.5
6.1
8.6
15.3
7.9
7.3
4.1
9.3
7.0
5.5
4.9
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

A comfortable dive experience awaits, suitable even for beginners, with average water temperatures consistently falling between 26-29°C (79-84°F). Visibility here can fluctuate, typically ranging from 5-25 m (16-82 ft), depending on recent weather and current activity. Currents generally keep the water clear, yet are typically mild enough not to pose significant challenges for divers. Expect to navigate engaging underwater terrain, featuring numerous gullies, natural swim-throughs, and an abundance of gorgonians, seafans, and whip corals. Such varied landscape provides ample nooks and crannies for exploration. Divers often find this dynamic dive profile offers continuous visual interest, enhancing the overall underwater journey.

Dive Difficulty & Safety Guidelines

While diving Deacon's Reef, maintaining excellent buoyancy control is crucial given the pristine and healthy coral formations encountered along the sloping wall. Divers should avoid contact with fragile reef structures and its abundant macro life to preserve this vibrant ecosystem. Even though the site is rated for beginners, it's wise for all divers to remain aware of their surroundings, particularly within gullies and near swim-throughs, ensuring responsible interaction. Keeping an eye on your depth and no-decompression limits is always recommended, especially when exploring deeper sections that extend beyond 25 m (82 ft). Prudent planning and adherence to your dive computer's guidance will ensure a safe and enjoyable experience.

Recommended Equipment

  • Dive Computer

This gear list is based on verified equipment signals for Deacon's Reef, Papua New Guinea. Always confirm final gear choices with your dive operator, guide, or liveaboard.

Recommended Dive Suit

Short-term weather patterns suggest stable conditions for divers visiting the area.

Thermal protection such as 2-3mm shorty or light wetsuit is commonly used in similar temperatures. Consider warmer surface protection (like a boat coat) due to brisk winds.

Current dive conditions indicate that water temperatures around Deacon's Reef are sitting at roughly 27°C (81°F). Surface air temperatures are resting at 26°C (78°F).

Deacon's Reef conditions last reviewed: 13:54 local time (UTC+10), Jun 14, 2026

Emergency & Medical Support

Essential information to help you plan your dive trip to Deacon's 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 Deacon's Reef

A vibrant ecosystem thrives here, notably for its extensive coral coverage and abundant macro life. Divers frequently encounter ornate ghost pipefish, which are a reliable highlight. Look for well-camouflaged Leaf Scorpionfish and the often-miffed-looking Spinecheeks. Beyond the macro realm, Milne Bay's northern coast occasionally hosts exciting pelagic encounters. In the blue, divers might spot larger species like Whalesharks, Hammerheads, and Mantas, adding an element of surprise to any dive.

Dive Centers Near Deacon's Reef

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Nearest Airports

Nearest airports to help plan travel to this dive area.

Gurney AirportGUR
41 km
Girua AirportPNP
308 km
Port Moresby Jacksons International AirportPOM
392 km
💵Currency:PGK

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Frequently Asked Questions

What is the typical maximum depth for diving Deacon's Reef?

The maximum reported depth for diving at Deacon's Reef is 25 m (82 ft), though the average depth for exploration is closer to 15 m (49 ft). This range accommodates both recreational divers and those interested in exploring shallower sections of the reef.

Is Deacon's Reef suitable for beginner divers?

Yes, Deacon's Reef is rated as suitable for beginner divers. Its generally mild currents, clear waters, and varied topography make it an accessible and enjoyable site for those with less experience, provided they have proper training and guidance.

What marine life can I expect to see at Deacon's Reef?

Divers can expect to see a rich array of macro life, including ornate ghost pipefish, Leaf Scorpionfish, and Spinecheeks. The reef also boasts extensive hard and soft corals and massive sponges. There's also a chance for encounters with pelagic species like Whalesharks, Hammerheads, and Mantas in the blue.

What are the water temperatures like at Deacon's Reef?

Water temperatures at Deacon's Reef are consistently warm throughout the year, typically ranging between 26-29°C (79-84°F). These comfortable temperatures make for pleasant diving conditions regardless of the season.

How is Deacon's Reef accessed?

Deacon's Reef is primarily accessed via boat, usually a short 10-minute ride from Tawali Dive Resort on the north coast of Milne Bay. Liveaboards operating in the region also visit this site, especially during specific months.

What makes Deacon's Reef historically significant?

Deacon's Reef is named after Kevin Deacon, a pioneering underwater photographer and diver. The site, like many in Milne Bay, benefited from the early exploration efforts of divers like Bob Halstead, who helped establish the region's reputation as a world-class diving destination, particularly for macro photography.

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