Milne Bay sits in the Solomon Sea at the eastern tip of Papua New Guinea and is one of the country's most varied diving regions. The area is best known for muck diving, with sites such as Dinah's Beach producing leaf scorpionfish, nudibranchs, and stonefish in shallow water entered directly from shore. Reef and wall sites like Sponge Heaven and Wahoo Point add deeper structure, the former dropping past one hundred metres along a sponge-encrusted wall. Water temperatures are warm through most of the year, cooling slightly between August and October. October through March is cited as the prime diving window, with September noted for manta ray activity.
Monthly water temperature across Milne Bay's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Temperatures sit at their warmest from December through April and dip modestly between August and October, when cooler upwellings can reach the reef sites. Conditions remain diveable year-round, though October to March is generally considered the most productive period.
5 operators
Papua New Guinea
Papua New Guinea
Papua New Guinea
Papua New Guinea
Water temperature around Milne Bay ranges from about 27°C in August to 30°C in January, based on satellite sea-temperature data for its dive sites.
With water around 27–30°C, a rash guard or 3mm shorty works in Milne Bay year-round.
Fin maps 6 sites in Milne Bay (6 scuba diving sites and 2 snorkelling spots, with some suited to both).
Across Milne Bay's dive sites, May and November are most often reported as the best months to visit.
