Asia › Sri Lanka › Eastern Sri Lanka

Knife Rock

12 mMax Depth

BoatEntry

11Species

Conditions Summary

Model forecast · local time (GMT+5:30)

Model conditions signal100/100

Waves

0.4 m

7.8 s

Swell

0.3 m

8.1 s

Current speed

0.4 km/h

flowing toward E

Water temperature

30.3°C

Wind

6.0 km/h

→ W

Sea level

0.3 m

rising

WavesCalm

SwellCalm

Current speedCalm

Planning window

17:30–17:00

Calmest model window

Forecast Overview

Fri, Oct 16Calm

Waves0.4–0.4 mCurrent speed0.4 km/h maxWater temperature30.3°C

Sat, Oct 17Calm

Waves0.3–0.4 mCurrent speed0.4 km/h maxWater temperature30.2°C

Sun, Oct 18Calm

Waves0.3–0.3 mCurrent speed0.4 km/h maxWater temperature30.3°C

TodayCalm

Waves0.3–0.3 mCurrent speed0.5 km/h maxWater temperature30.4°C

Next 72 hours

17:00

Waves: 0.4 m

Current speed: 0.4 km/h

Water temperature: 30.3°C

23:00

Waves: 0.4 m

Current speed: 0.2 km/h

Water temperature: 30.2°C

05:00

Waves: 0.3 m

Current speed: 0.2 km/h

Water temperature: 30.1°C

11:00

Waves: 0.3 m

Current speed: 0.2 km/h

Water temperature: 30.3°C

17:00

Waves: 0.3 m

Current speed: 0.4 km/h

Water temperature: 30.3°C

23:00

Waves: 0.3 m

Current speed: 0.2 km/h

Water temperature: 30.2°C

05:00

Waves: 0.3 m

Current speed: 0.2 km/h

Water temperature: 30.1°C

11:00

Waves: 0.3 m

Current speed: 0.4 km/h

Water temperature: 30.4°C

17:00

Waves: 0.3 m

Current speed: 0.3 km/h

Water temperature: 30.5°C

23:00

Waves: 0.3 m

Current speed: 0.3 km/h

Water temperature: 30.3°C

05:00

Waves: 0.3 m

Current speed: 0.3 km/h

Water temperature: 30.2°C

11:00

Waves: 0.3 m

Current speed: 0.3 km/h

Water temperature: 30.5°C

Catalog depth12 m

Data sources & field guideOpen-Meteo Marine + Weather APIs

Planning context, not a safety guarantee. Coastal model accuracy is limited. Confirm the actual briefing, entry, exit, and suitability with a local operator.

Updated: cached data

Open-Meteo Marine + Weather APIs →

Dive readiness

Collecting the latest marine conditions and forecast signals.

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Dive Types

ReefSalt Water

Questions to ask a local operator

What are today's current, visibility, entry, and exit conditions?
Does the planned route stay within my certification and recent experience?
Are there local permits, conservation rules, or equipment requirements?

Common Species

12 km · nearby observations

Anemone fish

From site catalogue

Cuttlefish

From site catalogue

Lobster

From site catalogue

Mantis shrimp

From site catalogue

Moray eel

From site catalogue

Nudibranch

From site catalogue

Octopus

From site catalogue

Reef fish ( Scorpionfish, boxfish,puffer fish, surgeonfish, angelfish, bannerfish, triggerfish, parrotfish, trumpetfish, pipefish, clown fish, swee

From site catalogue

Sea turtle

From site catalogue

Starfish

From site catalogue

Triggerfish

From site catalogue

Acanthurus lineatus

Nearby OBIS observations9

These are nearby biodiversity records, not a guarantee that every species will be seen on a particular dive.

OBIS source →