Asia › Sri Lanka › Eastern Sri Lanka

Mortar Rock

8 mMax Depth

BoatEntry

4Species

Conditions Summary

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

Model conditions signal100/100

Waves

0.2 m

7.8 s

Swell

0.2 m

7.3 s

Current speed

0.3 km/h

flowing toward SE

Water temperature

30.6°C

Wind

13.6 km/h

→ W

Sea level

0.4 m

rising

WavesCalm

SwellCalm

Current speedCalm

Planning window

12:15–11:00

Calmest model window

Forecast Overview

Mon, Oct 19Calm

Waves0.2–0.2 mCurrent speed0.5 km/h maxWater temperature30.6°C

Tue, Oct 20Calm

Waves0.2–0.3 mCurrent speed0.4 km/h maxWater temperature30.6°C

TodayCalm

Waves0.3–0.3 mCurrent speed0.3 km/h maxWater temperature30.6°C

TomorrowCalm

Waves0.3–0.3 mCurrent speed0.2 km/h maxWater temperature30.6°C

Next 72 hours

11:00

Waves: 0.2 m

Current speed: 0.2 km/h

Water temperature: 30.6°C

17:00

Waves: 0.2 m

Current speed: 0.5 km/h

Water temperature: 30.7°C

23:00

Waves: 0.2 m

Current speed: 0.3 km/h

Water temperature: 30.5°C

05:00

Waves: 0.2 m

Current speed: 0.3 km/h

Water temperature: 30.4°C

11:00

Waves: 0.2 m

Current speed: 0.3 km/h

Water temperature: 30.7°C

17:00

Waves: 0.2 m

Current speed: 0.4 km/h

Water temperature: 30.7°C

23:00

Waves: 0.3 m

Current speed: 0.2 km/h

Water temperature: 30.5°C

05:00

Waves: 0.3 m

Current speed: 0.2 km/h

Water temperature: 30.4°C

11:00

Waves: 0.3 m

Current speed: 0.2 km/h

Water temperature: 30.7°C

17:00

Waves: 0.3 m

Current speed: 0.3 km/h

Water temperature: 30.8°C

23:00

Waves: 0.3 m

Current speed: 0.2 km/h

Water temperature: 30.6°C

05:00

Waves: 0.3 m

Current speed: 0.2 km/h

Water temperature: 30.5°C

Catalog depth8 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.

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

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

Acanthurus lineatus

Nearby OBIS observations11

Coenobita rugosus

Nearby OBIS observations9

Eretmochelys imbricata

Nearby OBIS observations8

Melichthys indicus

Nearby OBIS observations7

Chaetodon vagabundus

Nearby OBIS observations5

Gomphosus caeruleus

Nearby OBIS observations5

Lethrinus harak

Nearby OBIS observations5

Thalassoma hardwicke

Nearby OBIS observations5

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

OBIS source →