Samarai Island, Milne Bay tide times

Predictions: Open-Meteo Marine (MeteoFrance SMOC, 0.08° grid) — heights relative to MSL (not chart datum / LAT). Model-derived.

Model-derived from a global ocean grid. Useful indication; expect about ±45 minutes on average vs. a local harmonic gauge, individual stations vary widely. See /methodology for per-region detail. Not for navigation.

Conditions as of 08:00 local time. Refreshes daily.

Predictions: Open-Meteo Marine (MeteoFrance SMOC, 0.08° grid) — heights relative to MSL (not chart datum / LAT). Model-derived. · Not for navigation.

The angler tradition for major/minor fishing windows: major ≈3-hour windows around moon transit and opposition; minor ≈2-hour windows around moonrise and moonset. Times are Pacific/Port Moresby local. Folk tradition, not a scientific forecast.

Next spring tide on Thu 21 May (range 1.4m). Next neap on Tue 26 May.

Spring tides cluster around new and full moons (biggest swings). Neap tides land on quarter moons (smallest swings). See the spring tide and neap tide glossary entries for the why.

Samarai is a small coral island at the eastern tip of the Papuan Peninsula, sitting in China Strait — the tidal passage that separates the Papua mainland from the islands of the East Cape area. The island was the colonial capital of British New Guinea before Port Moresby assumed that role in 1906, and before the colonial period it was a significant trading centre in the Kula Ring exchange network that connected the islands of Milne Bay. Today Samarai is quiet: a few hundred residents, a dock, historic colonial-era buildings in various states of decay, and a harbour that looks out across China Strait toward the flat-topped bulk of the East Cape and the islands of the Louisiade Archipelago beyond. China Strait is one of the most significant tidal passages in Milne Bay Province. The strait is the primary navigational route for vessels moving between the Coral Sea and the Solomon Sea — the division of water between the two seas runs through this narrow passage. The tidal current through China Strait on spring tides can reach 2 to 3 knots; vessels timing their passage correctly ride the current, while those arriving at the wrong phase face a slow slog or an uncomfortable condition in the standing waves that form when wind opposes current. Tide data for Samarai is sourced from Open-Meteo Marine. Timing accuracy is ±45 minutes; height accuracy is ±0.2 to 0.3 metres. Milne Bay Province's tidal regime is mixed semidiurnal with a spring range of 1.5 to 2.5 metres, which drives the China Strait current significantly. Two unequal high tides and two unequal low tides per day. The neap range compresses to 0.8 to 1.5 metres, reducing the strait's current to a manageable 1 to 1.5 knots. For visiting yachts, Samarai is a waypoint and entry port. The island has a formal check-in facility for vessels entering Papua New Guinea from the east — the usual arrival route for boats crossing from the Solomon Islands or from Australia via the Torres Strait. The anchorage off the island's western shore is protected from the trade wind by the bulk of the island and by the nearby East Cape land mass. Holding is adequate over sand and coral rubble in 5 to 10 metres; the current in the anchorage is lighter than in the main strait, but a tidal swirl can make multi-anchor rigs necessary on spring tides. The historic buildings of Samarai — a colonial courthouse, the former government residences, several warehouses from the trading era — are part of PNG's built heritage record, though the preservation state varies from maintained to significantly deteriorated. Walking the island's small road network (the island is approximately 500 metres in each direction) takes less than an hour. The perspective from the northern end of the island looks directly into the narrowest section of China Strait, where the current lines are visible as distinct colour changes in the water when the tide is running hard. For divers, the strait passages near Samarai hold current-dependent species — barracuda schools, large trevally, and pelagic sharks on the ebb. The reef structure at the China Strait entrance is in 8 to 25 metres, with coral that reflects the strong tidal flushing that keeps the water clear and the coral healthy. Dive operators based at Alotau, 45 kilometres west, run excursions to the Samarai area on favourable weather and tidal windows. Slack water — 15 to 25 minutes around the predicted high or low — is the practical dive window; outside that, the current makes descent difficult and the water is turbulent at the shallower sites. The Kula Ring trading network that passed through Samarai before the colonial period still operates, though transformed. The ceremonial exchange of shell valuables (mwali armbands and soulava necklaces) between communities across the Milne Bay island groups continues as a living cultural practice — not a museum reconstruction but an active social institution. Samarai sits at a geographic nexus of this network, and the trading relationships between the island communities of Milne Bay are visible in the boat traffic that moves through China Strait.