Perhentian Islands, Malaysia 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 12:00 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 Asia/Kuala Lumpur local. Folk tradition, not a scientific forecast.

Last spring tide on Tue 19 May (range 2.1m). Next neap on Sat 23 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.

The Perhentian Islands — Pulau Perhentian Besar and Pulau Perhentian Kecil — sit 21 km off the Terengganu coast in the South China Sea. They are two islands separated by a 1.5 km channel, and between them they contain the most established budget dive and snorkel destination on Malaysia's east coast. Coral is visible from the surface in the bays on both islands; green and hawksbill sea turtles are resident on the reef and surface regularly in the bays within swimming distance of the accommodation. Besar — Big Island — hosts the larger resort infrastructure, the marine park office, and the dive centres serving the main reef sites on the western coast. Kecil — Small Island — holds Long Beach on its exposed eastern coast (a 400 m arc of sand with a dense strip of budget chalets, dive operators, and the backpacker social scene that has defined the Perhentians for two decades) and the quieter Coral Bay on the western side, shallower and more sheltered, where the snorkelling off the beach hits turtle territory reliably. The channel between the two islands is the productive zone for the stronger current dive sites: the Sugar Wreck, a small coastal trader at 20 m, and the channel pinnacles that concentrate reef fish in the tidal flow. The South China Sea here is mixed semidiurnal with a spring range of 1.2 to 1.8 m. The tidal state matters most for beach access: at the spring high, Long Beach narrows considerably and the zone between the beach bars and the water is compressed; at the spring low, the sand expands by 20 to 30 m and the shallow reef flat is accessible for wading and surface snorkelling without fins. The channel between the two islands runs 0.5 to 1.5 knots depending on tidal phase; dive operators plan the channel sites on the running current for the best fish aggregations. The monsoon closure is absolute. From November through February, the northeast monsoon builds seas of 3 to 4 m in the open South China Sea and the speedboat services from Kuala Besut suspend. The islands are effectively inaccessible to visitors for four months. Arriving in March at the season opening is arriving to a freshly reopened island — sand redistributed by the monsoon swell, dive sites cleared of algae buildup, sometimes new infrastructure. The fresh-season phenomenon is real and the diving in early March is often some of the best of the year in terms of visibility. The primary marine park species are hawksbill and green turtles, blacktip and whitetip reef sharks on the outer reef slope, bumphead parrotfish on the morning reef flat, and the giant clams in the seagrass meadows at the southern end of Besar. Sea turtle encounters in the bays are governed by marine park rules — no touching, no flash photography within 3 m, no blocking the turtle's path to surface. These rules are enforced by the park wardens and the dive operators; noncompliance results in immediate removal from the water. Predictions on this page come from Open-Meteo Marine (gridded model, ±45 min / ±0.2–0.3 m). The water sports scene on both islands — windsurfers, kayakers, snorkellers, and the occasional kitesurfer on the northern beaches of Besar — is entirely dependent on the monsoon window. Outside the November–February closure, the islands offer consistent light winds from the northeast that produce good windsurfing and kite conditions in the morning, settling to flat water in the afternoon. The Long Beach evening scene on Kecil — restaurants and beach bars along the 400 m sand arc — is the social gravitational centre of the Perhentian experience; the conversation is as likely to be about dive site conditions as it is about travel.