Koh Tachai The Dome
Protected Area
Mu Ko Similan
Why dive here
With 173+ marine species recorded in the area - including blacktip reef sharks, eagle rays, giant moray eels, whale sharks and clownfish - Koh Tachai The Dome offers some of Similan Islands's richest diving. Water ranges 29-31°C, warmest April, May, June.
Koh Tachai's The Dome offers a relaxed dive, usually with manageable currents. You'll often find a good mix of smaller reef fish here, along with the chance to spot larger pelagics passing through off the deeper edge. It’s a good spot for intermediate divers looking for a straightforward drift and a chance at some interesting encounters.
Reviews for Koh Tachai The Dome
Conditions
Ocean conditions, forecast and tides for Koh Tachai The Dome
Koh Tachai The Dome Ocean Conditions
Monthly averages for Koh Tachai The Dome, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (8.1, 98.3) (6km away)
October Averages
Sea Temperature
30°C
85°F · Range: 28.7–30.4°C
Current Speed
5.1 cm/s
Direction: S (191.3°)
Salinity
29.75 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
Plan & book
Ways to dive Similan Islands, from day trips to liveaboards.
Day trips & courses
via GetYourGuideGuided dives, courses and snorkel trips with instant booking.
Find dive trips in Similan IslandsPlaces to stay
via Booking.comHotels and dive resorts near Similan Islands.
Search stays in Similan IslandsDive insurance
Most travel insurance excludes or limits scuba. Check what you need before you go.
Dive insurance explainedPartner links: we may earn a commission if you book, at no extra cost to you. How we make money
Where to Stay near Koh Tachai The Dome
Prices from Booking.com. We may earn a commission at no extra cost to you.