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Asia › Thailand › Southern Thailand

Green Rock

5–30 mMax Depth

6Dives Logged

Community rating★ 4.0 / 5

Conditions Summary

Model forecast · local time (GMT+7)

Model conditions signal100/100

Waves

0.1 m

3.6 s

Swell

0.1 m

3.0 s

Current speed

1.4 km/h

flowing toward SE

Water temperature

30.0°C

Wind

6.7 km/h

→ E

Sea level

0.6 m

rising

WavesCalm

SwellCalm

Current speedCalm

Planning window

07:30–07:00

Calmest model window

Forecast Overview

TodayWatch

Waves0.1–0.1 mCurrent speed2.2 km/h maxWater temperature30.5°C

TomorrowWatch

Waves0.0–0.1 mCurrent speed2.1 km/h maxWater temperature30.3°C

Fri, Oct 23Watch

Waves0.0–0.3 mCurrent speed1.9 km/h maxWater temperature30.2°C

Sat, Oct 24Watch

Waves0.1–0.2 mCurrent speed1.8 km/h maxWater temperature30.0°C

Next 72 hours

07:00

Waves: 0.1 m

Current speed: 1.4 km/h

Water temperature: 30.0°C

13:00

Waves: 0.1 m

Current speed: 1.7 km/h

Water temperature: 30.6°C

19:00

Waves: 0.1 m

Current speed: 2.1 km/h

Water temperature: 30.7°C

01:00

Waves: 0.1 m

Current speed: 1.9 km/h

Water temperature: 30.3°C

07:00

Waves: 0.1 m

Current speed: 1.7 km/h

Water temperature: 30.0°C

13:00

Waves: 0.1 m

Current speed: 1.9 km/h

Water temperature: 30.5°C

19:00

Waves: 0.0 m

Current speed: 1.7 km/h

Water temperature: 30.4°C

01:00

Waves: 0.0 m

Current speed: 1.9 km/h

Water temperature: 30.1°C

07:00

Waves: 0.3 m

Current speed: 1.7 km/h

Water temperature: 30.0°C

13:00

Waves: 0.1 m

Current speed: 1.7 km/h

Water temperature: 30.4°C

19:00

Waves: 0.1 m

Current speed: 1.9 km/h

Water temperature: 30.3°C

01:00

Waves: 0.1 m

Current speed: 1.7 km/h

Water temperature: 30.1°C

Catalog depth5–30 m

Typical visibility10–30 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

dive siteGreen RockNang Yuanmaplogbooktrackdivingdive spotKo Phangan District

Visibility

10+ m

About This Site

Green Rock is a dive site off the small island of Nang Yuan, Koh Tao. The spot is made up of rock formations and boulders, featuring several thrilling swim-throughs and small caves.The depth ranges from 5 to 30 meters (15-100 feet), but Green Rock is recommended for experienced divers due to the strong currents. This is also a good place to get your Deep Diver certification.Hawksbill turtles, green turtles, yellowtail barracudas, banded sea snakes, triggerfish, Durban shrimps, wart slugs, unicornfish, polka dot nudibranchs, and numerous other creatures can be spotted here. Sightings of whale sharks have also been reported in season.Average visibility at Green Rock, Koh Tao is 10 to 30 meters (33-100 feet).Dive site info provided byKlara Lon Apr 22, 2020

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

Chaetodon wiebeli

Nearby OBIS observations16

Amphiprion perideraion

Nearby OBIS observations8

Heniochus acuminatus

Nearby OBIS observations8

Siganus virgatus

Nearby OBIS observations8

Cheilinus fasciatus

Nearby OBIS observations7

Hemigymnus melapterus

Nearby OBIS observations7

Scolopsis margaritifera

Nearby OBIS observations7

Scarus ghobban

Nearby OBIS observations6

Abudefduf sexfasciatus

Nearby OBIS observations4

Cirripectes filamentosus

Nearby OBIS observations4

Egretta sacra

Nearby OBIS observations4

Epinephelus fasciatus

Nearby OBIS observations4

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

OBIS source →