Asia › Sri Lanka › Southern Sri Lanka

Tangalle reef

18 mMax Depth

BoatEntry

1Species

Conditions Summary

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

Model conditions signal71/100

Waves

1.5 m

11.7 s

Swell

1.3 m

9.7 s

Current speed

0.4 km/h

flowing toward SE

Water temperature

30.1°C

Wind

6.0 km/h

→ W

Sea level

0.5 m

falling

WavesChallenging

SwellWatch

Current speedCalm

Forecast Overview

TodayChallenging

Waves1.5–1.6 mCurrent speed0.6 km/h maxWater temperature30.3°C

TomorrowChallenging

Waves1.5–1.6 mCurrent speed0.7 km/h maxWater temperature30.1°C

Wed, Oct 21Challenging

Waves1.4–1.5 mCurrent speed0.7 km/h maxWater temperature30.0°C

Thu, Oct 22Challenging

Waves1.4–1.5 mCurrent speed0.4 km/h maxWater temperature29.8°C

Next 72 hours

06:00

Waves: 1.5 m

Current speed: 0.4 km/h

Water temperature: 30.1°C

12:00

Waves: 1.5 m

Current speed: 0.5 km/h

Water temperature: 30.4°C

18:00

Waves: 1.6 m

Current speed: 0.6 km/h

Water temperature: 30.4°C

00:00

Waves: 1.6 m

Current speed: 0.4 km/h

Water temperature: 30.1°C

06:00

Waves: 1.6 m

Current speed: 0.3 km/h

Water temperature: 30.0°C

12:00

Waves: 1.6 m

Current speed: 0.7 km/h

Water temperature: 30.4°C

18:00

Waves: 1.6 m

Current speed: 0.5 km/h

Water temperature: 30.2°C

00:00

Waves: 1.5 m

Current speed: 0.2 km/h

Water temperature: 29.9°C

06:00

Waves: 1.5 m

Current speed: 0.2 km/h

Water temperature: 29.9°C

12:00

Waves: 1.5 m

Current speed: 0.7 km/h

Water temperature: 30.2°C

18:00

Waves: 1.4 m

Current speed: 0.4 km/h

Water temperature: 30.0°C

00:00

Waves: 1.5 m

Current speed: 0.3 km/h

Water temperature: 29.8°C

Catalog depth18 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

Fish

From site catalogue

Penaeus (Fenneropenaeus) indicus

Nearby OBIS observations38

Coenobita rugosus

Nearby OBIS observations32

Numenius phaeopus

Nearby OBIS observations8

Cocos nucifera

Nearby OBIS observations7

Grapsus tenuicrustatus

Nearby OBIS observations7

Himantopus himantopus

Nearby OBIS observations7

Egretta garzetta

Nearby OBIS observations5

Grapsus albolineatus

Nearby OBIS observations5

Littorinidae

Nearby OBIS observations5

Lumnitzera racemosa

Nearby OBIS observations5

Abudefduf septemfasciatus

Nearby OBIS observations4

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

OBIS source →