Indonesia

Han's Reef

5–20 mMax Depth

boatEntry

9Species

Conditions Summary

Model forecast · local time (GMT+8)

Model conditions signal81/100

Waves

0.9 m

10.5 s

Swell

0.8 m

10.7 s

Current speed

1.7 km/h

flowing toward W

Water temperature

29.3°C

Wind

20.5 km/h

→ S

Sea level

0.7 m

falling

WavesWatch

SwellCalm

Current speedWatch

Planning window

21:00–22:00

Calmest model window

Forecast Overview

Tue, Oct 20Watch

Waves0.9–0.9 mCurrent speed1.7 km/h maxWater temperature29.4°C

TodayWatch

Waves0.7–0.9 mCurrent speed1.9 km/h maxWater temperature29.2°C

TomorrowWatch

Waves0.7–0.9 mCurrent speed2.2 km/h maxWater temperature29.2°C

Fri, Oct 23Watch

Waves0.8–1.0 mCurrent speed2.6 km/h maxWater temperature29.4°C

Next 72 hours

22:00

Waves: 0.9 m

Current speed: 1.6 km/h

Water temperature: 29.4°C

04:00

Waves: 0.9 m

Current speed: 1.0 km/h

Water temperature: 29.0°C

10:00

Waves: 0.8 m

Current speed: 1.7 km/h

Water temperature: 29.2°C

16:00

Waves: 0.9 m

Current speed: 0.7 km/h

Water temperature: 29.5°C

22:00

Waves: 0.8 m

Current speed: 1.6 km/h

Water temperature: 29.1°C

04:00

Waves: 0.7 m

Current speed: 1.3 km/h

Water temperature: 28.9°C

10:00

Waves: 0.7 m

Current speed: 1.9 km/h

Water temperature: 29.1°C

16:00

Waves: 0.8 m

Current speed: 1.3 km/h

Water temperature: 29.5°C

22:00

Waves: 0.8 m

Current speed: 1.8 km/h

Water temperature: 29.2°C

04:00

Waves: 0.8 m

Current speed: 1.9 km/h

Water temperature: 29.0°C

10:00

Waves: 0.9 m

Current speed: 1.8 km/h

Water temperature: 29.3°C

16:00

Waves: 1.0 m

Current speed: 1.8 km/h

Water temperature: 29.8°C

Catalog depth5–20 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.

Seasons · water temperature

12-month outlook

Best window

May-Oct

Peak month

Apr 29.4°

Jan28.7°

Feb28.5°

Mar28.8°

Apr29.4°

May29.2°

Jun28.6°

Jul27.8°

Aug27.5°

Sep27.8°

Oct28.5°

Nov29.2°

Dec29.0°

Current: mild

Typical visibility: 20 m

Historical planning data from the recorded site profile. Water temperature and conditions can vary by day, depth, and weather; confirm current conditions with a local operator.

Explore nearby centers on the map

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Dive Types

reefsalt Waterbeginner Difficulty

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

Yellow boxfish

Ostracion cubicum

DeepLog2

Coral filefish

Oxymonacanthus longirostris

DeepLog1

Nudibranch

Doriprismatica atromarginata

DeepLog1

Reticulated sandperch

Parapercis tetracantha

DeepLog1

Spotted parrotfish

Cetoscarus ocellatus

DeepLog1

Two-lined monocle bream

Scolopsis bilineata

DeepLog1

Twotone tang

Zebrasoma scopas

DeepLog1

Yellowtail

Stegastes lacrymatus

DeepLog1

Yellowtail clownfish

Amphiprion clarkii

DeepLog1

Chelonia mydas

Nearby OBIS observations9

Arothron nigropunctatus

Nearby OBIS observations8

Eretmochelys imbricata

Nearby OBIS observations8

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

DeepLog + OBIS →

Photos