Koh Ngam Yai
Protected Area
Mu ko Chumphon
Why dive here
With 158+ marine species recorded in the area - including blacktip reef sharks, blue-spotted stingrays, mobula rays (devil rays), whale sharks and pufferfish - Koh Ngam Yai offers some of Gulf of Thailand's richest diving. Water ranges 28-31°C, warmest April, May, June.
Koh Ngam Yai offers a straightforward dive, well-suited for beginners or those looking for a relaxed day in the water. We typically see various reef fish darting around the scattered coral bommies. Visibility here can vary, but on a good day, it’s a pleasant spot for a casual dive in the Gulf. It's not a site that will blow your mind, but it’s a solid option for logging some bottom time.
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Conditions
Ocean conditions, forecast and tides for Koh Ngam Yai
Koh Ngam Yai Ocean Conditions
Monthly averages for Koh Ngam Yai, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (10.15, 99.7) (6km away)
October Averages
Sea Temperature
30°C
86°F · Range: 29.1–31°C
Air Temperature
27°C
81°F
Wind Speed
4.83 m/s
9.4 knots
Atmospheric Pressure
1009.7 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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