Knife Rock
Protected Area
Rumassala SAN
Why dive here
With 91+ marine species recorded in the area - including blue whales, giant moray eels, humpback whales, orcas and sea turtles - Knife Rock offers some of Hikkaduwa & South Coast's richest pinnacle diving. Water ranges 28-31°C, warmest March, April, May.
Knife Rock is a decent spot for a chill dive in Hikkaduwa. It’s pretty shallow, topping out at around 14 meters, which makes it an easy run for newer divers or those who just want to take it slow. You’ll weave around a few rock formations and keep an eye out for the usual suspects – we’ve often spotted sweetlips lurking under ledges and parrotfish munching on the coral. Visibility can be a bit variable, but on a good day, it’s a pleasant way to spend an hour underwater without battling any strong currents.
Typical Knife Rock 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 Knife Rock
Dive shops near Knife Rock
Pearl Divers
Divinguru Unawatuna
Submarine Diving School
Weligama Bay Diving Centre
Dive For You
Poseidon Diving Center
Reviews for Knife Rock
Conditions
Ocean conditions, forecast and tides for Knife Rock
Knife Rock Ocean Conditions
Monthly averages for Knife Rock, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (6.45, 79.98) (12km away)
October Averages
Sea Temperature
29°C
84°F · Range: 27.7–30°C
Air Temperature
26°C
79°F
Wind Speed
5.07 m/s
9.9 knots
Atmospheric Pressure
1010.1 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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