Slack Water
Malaysia · Perhentian, Redang, Tioman

Malaysia East Coast

Calm island diving between monsoons.

At a glance

Best months
April to September
Water
27–30°C3 mm wetsuit
Visibility
10–25 m
Current
MildMostly mild
Certification
Open WaterMinimum Open Water
How you dive
Land-based

When to go

April to September; most resorts reopen in March.

Overview

Malaysia's east coast islands, including the Perhentians, Redang and Tioman, offer calm, easy island diving with turtles, healthy reefs and resorts a few steps from the water. They are a good choice for newer divers and for anyone who wants a relaxed beach holiday with a few dives each day.

Most of the diving is gentle, with mild currents and shallow reefs. Open Water divers are well catered for, and many resorts have their own dive centres.

The most important thing to know is the northeast monsoon. From roughly November to February, rough seas close most resorts, dive shops and ferries on these islands. Some places close as early as October and others reopen only in March, so check with the specific resort before you book a shoulder-season trip.

The best time to visit is April to September, when the sea is calm and visibility is at its best. Water temperature stays between about 27 and 30°C. The islands are reached by boat from jetties on the mainland, and services run only in season.

Who it suits

Open Water friendly.

What you'll see

TurtlesEasy reefsIsland resorts

Know the risks

  • Northeast monsoon roughly November to February: most resorts, dive shops and ferries stop
  • Some places close from October; confirm before booking

Sources

Last reviewed 2026-10. Where sources disagree we use the more conservative range.