Plan Your Trip
The tides at Koh Hong affect one thing more than anything else: whether you can get into the hidden lagoon. Here's how to understand them and what to expect on your tour.
The Hong Island Krabi team3 min read
The entrance to the Koh Hong lagoon is a narrow gap in the limestone cliff face. At high tide, the water level rises enough to make the passage too low and too narrow to swim through safely. At low tide, there can be exposed rock that makes entry awkward. The sweet spot is mid-tide, roughly two to three hours either side of high water.
We schedule all tours around the tidal window. Your guide will know the tide times for your specific day and will time the lagoon visit accordingly. In practical terms, this means the departure time for your tour is partly determined by the tide, not just sunrise or preference.
The tide chart above shows you exactly what to expect on any given day, so you can pick a date that works.
🌊 Check before you book: The live tide chart at the top of this page updates daily. If you're planning a trip, scroll up and check today's tide to get a feel for the pattern. Tides shift by about 50 minutes each day, so the timing on your actual visit may be slightly different.
Mid-tide, roughly two to three hours either side of high water. At the top of the tide the gap in the cliff is too low to pass through safely, and at the bottom of the tide there is exposed rock in the way. Every tour we run is scheduled around that window rather than around a fixed departure time.
No. We already do that for you: the departure time for each day is set against the tide, so any date you can book is a date the lagoon works. Checking the chart above is useful if you want to know roughly what time of day you will be at the lagoon, or if you are choosing between two dates.
Because tides shift by about 50 minutes a day. A tour running this Tuesday and the same tour next Tuesday can have noticeably different timings, and the running order of the islands changes with it. Your exact pickup time is confirmed the evening before.
It is rare, because the day is planned around the tidal window. It can happen that the group arrives at the edge of the window and the captain judges the passage unsafe, in which case you still see the lagoon entrance and the cliffs from the water. Safety is the captain's call on the day and it is not negotiable.
Two ways worth knowing. Snorkeling visibility is usually better on a rising tide, when clearer water moves in over the reef. And the sandbar at Pakbia grows as the tide falls, so a low tide in the middle of your day means a longer stretch of sand to walk. The same effect makes Talay Waek walkable on the 9 Islands tour.
Yes. It pulls current tide data for the Hong Islands area and updates daily, so it reflects the real pattern rather than a printed table. Use it as a guide to the shape of the day, not as your pickup time, which we confirm directly.