Japan

Yonaguni Monument

5–25 mMax Depth

boatEntry

1Species

Conditions Summary

Model forecast · local time (GMT+9)

Model conditions signal81/100

Waves

0.9 m

5.5 s

Swell

0.6 m

4.8 s

Current speed

2.8 km/h

flowing toward NE

Water temperature

28.9°C

Wind

18.7 km/h

→ E

Sea level

1.1 m

falling

WavesWatch

SwellCalm

Current speedWatch

Forecast Overview

Sun, Oct 18Challenging

Waves0.9–1.1 mCurrent speed3.0 km/h maxWater temperature28.9°C

Mon, Oct 19Challenging

Waves0.9–1.1 mCurrent speed3.1 km/h maxWater temperature29.0°C

Tue, Oct 20Challenging

Waves1.0–1.6 mCurrent speed2.7 km/h maxWater temperature29.1°C

Next 72 hours

00:00

Waves: 0.9 m

Current speed: 2.8 km/h

Water temperature: 28.9°C

06:00

Waves: 1.0 m

Current speed: 2.7 km/h

Water temperature: 28.8°C

12:00

Waves: 1.1 m

Current speed: 3.0 km/h

Water temperature: 29.0°C

18:00

Waves: 1.1 m

Current speed: 2.7 km/h

Water temperature: 29.1°C

00:00

Waves: 1.1 m

Current speed: 2.7 km/h

Water temperature: 28.9°C

06:00

Waves: 1.1 m

Current speed: 3.0 km/h

Water temperature: 28.8°C

12:00

Waves: 1.0 m

Current speed: 3.1 km/h

Water temperature: 29.1°C

18:00

Waves: 0.9 m

Current speed: 2.7 km/h

Water temperature: 29.3°C

00:00

Waves: 1.0 m

Current speed: 2.7 km/h

Water temperature: 29.0°C

06:00

Waves: 1.1 m

Current speed: 2.7 km/h

Water temperature: 28.9°C

12:00

Waves: 1.2 m

Current speed: 2.5 km/h

Water temperature: 29.1°C

18:00

Waves: 1.4 m

Current speed: 2.3 km/h

Water temperature: 29.2°C

Catalog depth5–25 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

Nov-Jun

Peak month

Jul 29.1°

Jan23.7°

Feb23.5°

Mar23.9°

Apr25.1°

May26.6°

Jun28.3°

Jul29.1°

Aug29.1°

Sep28.5°

Oct27.4°

Nov26.2°

Dec24.8°

Current: moderate

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

deepdriftsalt Waterintermediate 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

Semicircle angelfish

Pomacanthus semicirculatus

DeepLog1

Charadrius dubius

Nearby OBIS observations11

Actitis hypoleucos

Nearby OBIS observations9

Charadrius alexandrinus

Nearby OBIS observations6

Actinopyga mauritiana

Nearby OBIS observations5

Malacanthus brevirostris

Nearby OBIS observations5

Pluvialis fulva

Nearby OBIS observations5

Ambassis urotaenia

Nearby OBIS observations4

Epibulus insidiator

Nearby OBIS observations4

Ostorhinchus novemfasciatus

Nearby OBIS observations4

Pempheris oualensis

Nearby OBIS observations4

Pristiapogon kallopterus

Nearby OBIS observations4

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

DeepLog + OBIS →