Ao Nui
Protected Area
Krabi Environmental Protected Area
Why dive here
With 173+ marine species recorded in the area - including blacktip reef sharks, eagle rays, giant moray eels, whale sharks and clownfish - Ao Nui offers some of Similan Islands's richest diving. Water ranges 29-31°C, warmest April, May, June.
Ao Nui sits in a sheltered bay on Similan Island number nine, a perfect spot for newer divers to ease into the water. We usually find it calm here, with a sandy bottom sloping gently to 17 meters. Look closely among the small boulders and you'll often spot juvenile reef sharks or stingrays tucked away, and the occasional turtle glides past the reef edge. It’s an easy, relaxed dive, ideal for check-out dives or just stretching your fins.
Typical Ao Nui Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Always perform a 3-minute safety stop at 5m before surfacing.
Nearest Dive Centres to Ao Nui
Dive shops near Ao Nui
Activity and diving centre
Diving Shop
Beachfront Divers
Princess Divers
Phi Phi Diving
Sea Frog
Reviews for Ao Nui
Conditions
Ocean conditions, forecast and tides for Ao Nui
Ao Nui Ocean Conditions
Monthly averages for Ao Nui, 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)
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