Reefwander
Turquoise water and jungle-lined shoreline of Restorf Island in Kimbe Bay, Papua New Guinea

Coral Triangle · Papua New Guinea

Kimbe Bay

A single bay holds roughly half the world's recorded coral species.

Photo: Kimbe at en.wikipedia · CC BY-SA 3.0

Kimbe Bay, on the north coast of New Britain in Papua New Guinea, holds roughly half the coral species recorded anywhere in the world within a single bay, largely protected by its remoteness and low visitor numbers. Fringing reefs and offshore seamounts such as Bradford Shoal combine dense coral cover with schooling barracuda and jacks, and Walindi Plantation Resort has run dive operations here since the 1980s. Sites range from sheltered coral gardens to current-exposed pinnacles.

About diving in Kimbe Bay

Diving here is shore-based and short-range: boats run from jetties on the bay's southern shore, and a normal day is two or three dives with the surface interval taken on board or back at the resort. Inshore reefs are a quick run out; the offshore shoals take longer and usually get the first slot of the morning. Crews pick the running order on the day, by wind and sea state rather than by a fixed rotation. Liveaboards provision in the same bay before working further along the New Britain coast, so many visitors combine the two.

The bay is deep and volcanic, backed by cone-shaped hills, and that shape sets up two different kinds of dive. Along the shoreline, fringing slopes and shallow bommies sit in calm water on easy profiles. Offshore, isolated seamounts rise out of blue water and crest well within recreational depth; those are the sites that catch current and hold the fish schools. Heavy rain on the hinterland can push runoff into the inshore water and soften visibility for a day or two.

The draw is coral density at close range. Bommie tops carry soft coral and anemone carpets with their resident clownfish, sea fans and whip corals stand out into the flow on the pinnacle walls, and the water above them stays busy with anthias and fusiliers. It is wide-angle diving first, though guides also work the sand and rubble between coral heads for nudibranchs and smaller subjects when the light goes flat or the sea is up.

Conditions are forgiving — warm water, gentle current on most sites — so mixed-ability groups do well, helped by reefs that offer a shallow top and a deeper slope off the same descent line. Remoteness is the real constraint: bring spares for anything you cannot dive without, since resupply means a flight, and treat evacuation as a multi-leg journey when you plan profiles and insurance. Divers whose priority is wrecks or big-animal encounters should set expectations before booking.

Best time to dive Kimbe Bay

Kimbe Bay season rating, sea surface temperature, daytime high and rainfall by month, 2011–2025 averages
JanFebMarAprMayJunJulAugSepOctNovDec
SeasonGoodGoodGoodGoodPrimePrimePrimePrimePrimePrimeGoodGood
Sea surface30°C86°F30°C86°F30°C86°F30°C86°F30°C86°F30°C86°F29°C84°F29°C84°F29°C84°F30°C86°F30°C86°F30°C86°F
Daytime high30°C86°F30°C86°F30°C86°F30°C86°F31°C88°F30°C86°F30°C86°F30°C86°F31°C88°F31°C88°F31°C88°F31°C88°F
Rain246 mm9.7 in192 mm7.6 in243 mm9.6 in196 mm7.7 in154 mm6.1 in149 mm5.9 in179 mm7.0 in139 mm5.5 in148 mm5.8 in144 mm5.7 in157 mm6.2 in205 mm8.1 in
Kimbe Bay season rating, sea surface temperature, daytime high and rainfall by month, January to June, 2011–2025 averages
JanFebMarAprMayJun
GoodGoodGoodGoodPrimePrime
Sea surface
30°C86°F30°C86°F30°C86°F30°C86°F30°C86°F30°C86°F
Daytime high
30°C86°F30°C86°F30°C86°F30°C86°F31°C88°F30°C86°F
Rain
246 mm9.7 in192 mm7.6 in243 mm9.6 in196 mm7.7 in154 mm6.1 in149 mm5.9 in
Kimbe Bay season rating, sea surface temperature, daytime high and rainfall by month, July to December, 2011–2025 averages
JulAugSepOctNovDec
PrimePrimePrimePrimeGoodGood
Sea surface
29°C84°F29°C84°F29°C84°F30°C86°F30°C86°F30°C86°F
Daytime high
30°C86°F30°C86°F31°C88°F31°C88°F31°C88°F31°C88°F
Rain
179 mm7.0 in139 mm5.5 in148 mm5.8 in144 mm5.7 in157 mm6.2 in205 mm8.1 in

2011–2025 averages. Sea surface: NOAA Coral Reef Watch, measured at the surface, so deeper water can run colder. Daytime high and rain: NASA POWER.

Diveable year-round; May–October dry season typically gives clearer water and calmer seas.

Best months: May, June, July, August, September, October

Kimbe Bay water temperature and weather by month

The sea surface stays between 29 and 30 °C (84–86 °F) all year. Rain falls through the year, about 180 mm (7.1 in) a month on average, with January the wettest. Daytime highs sit around 30 °C (86 °F) all year. The coldest water here is about 27 °C (81 °F), so pack a 3 mm, or even a 2 mm, suit.

Dive types & marine life

Coral cover and reef fish are the constant, with anthias and fusiliers on every dive, Napoleon wrasse on the larger reefs and reef sharks along the shoal edges. Barracuda gather over the outer shoals through the clearer May-to-October stretch. Mantas visit cleaning stations occasionally rather than predictably; nudibranchs are easiest on the sheltered inshore reefs.

  • Reef
  • Wall
  • Seamount
  • Pristine corals
  • Reef sharks
  • Napoleon wrasse
  • Barracuda
  • Nudibranchs
  • Manta rays

Best dive sites in Kimbe Bay

An isolated seamount that pulls in barracuda and trevally schools

20–27 madvanced

Schooling barracuda and trevally when a current is running

16–30 m · max 40 madvanced

Dense stands of red whip gorgonians tangled with crinoids

10–25 mintermediate

Dark red sea fans two to three metres across

15–18 mbeginner

How to get to Kimbe Bay

Flights route through Port Moresby to Hoskins airport, roughly an hour's drive from the bayside resorts, which meet guests and run the transfer. Diving is day-boat from those bases, and liveaboards load in the bay for longer New Britain routes, so trips are often built as a week ashore plus a week afloat.

Photos from Kimbe Bay

  • Eliot Ferguson · CC BY-SA 3.0

  • Eliot Ferguson · CC BY-SA 3.0

  • Eliot Ferguson · CC BY-SA 3.0

Dive videos

Superb Liveaboard Diving on Kimbe Bay Coral Reefs, NE Papua New Guinea · Tony Ayling on YouTube

2017 Diving Kimbe Bay aboard MV FeBrina, Papua New Guinea. · DivingTheo on YouTube

Photo credits

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