Japan

South Steps

10–30 mMax Depth

boatEntry

2Species

Conditions Summary

Model forecast · local time (GMT+9)

Model conditions signal100/100

Waves

0.5 m

6.3 s

Swell

0.4 m

5.1 s

Current speed

0.4 km/h

flowing toward NE

Water temperature

28.1°C

Wind

6.6 km/h

→ NE

Sea level

1.3 m

falling

WavesCalm

SwellCalm

Current speedCalm

Planning window

10:45–10:00

Calmest model window

Forecast Overview

Fri, Oct 16Calm

Waves0.4–0.5 mCurrent speed1.3 km/h maxWater temperature28.2°C

Sat, Oct 17Watch

Waves0.4–0.9 mCurrent speed1.3 km/h maxWater temperature28.1°C

Sun, Oct 18Watch

Waves0.6–0.9 mCurrent speed0.7 km/h maxWater temperature28.1°C

Mon, Oct 19Calm

Waves0.5–0.6 mCurrent speed1.4 km/h maxWater temperature28.1°C

Next 72 hours

10:00

Waves: 0.5 m

Current speed: 0.6 km/h

Water temperature: 28.0°C

16:00

Waves: 0.4 m

Current speed: 1.3 km/h

Water temperature: 28.3°C

22:00

Waves: 0.4 m

Current speed: 0.3 km/h

Water temperature: 28.0°C

04:00

Waves: 0.4 m

Current speed: 1.3 km/h

Water temperature: 28.0°C

10:00

Waves: 0.5 m

Current speed: 1.0 km/h

Water temperature: 28.0°C

16:00

Waves: 0.7 m

Current speed: 0.5 km/h

Water temperature: 28.1°C

22:00

Waves: 0.9 m

Current speed: 0.7 km/h

Water temperature: 28.1°C

04:00

Waves: 0.8 m

Current speed: 0.5 km/h

Water temperature: 28.0°C

10:00

Waves: 0.7 m

Current speed: 0.6 km/h

Water temperature: 28.1°C

16:00

Waves: 0.6 m

Current speed: 0.2 km/h

Water temperature: 28.3°C

22:00

Waves: 0.6 m

Current speed: 0.0 km/h

Water temperature: 28.1°C

04:00

Waves: 0.5 m

Current speed: 1.0 km/h

Water temperature: 28.1°C

Catalog depth10–30 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.

Updated: cached data

Open-Meteo Marine + Weather APIs →

Dive readiness

Collecting the latest marine conditions and forecast signals.

Seasons · water temperature

12-month outlook

Best window

Apr-Nov

Peak month

Aug 28.9°

Jan22.3°

Feb21.5°

Mar21.5°

Apr22.5°

May24.5°

Jun26.6°

Jul28.6°

Aug28.9°

Sep28.3°

Oct27.0°

Nov25.3°

Dec23.7°

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

reefsalt 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

Lavender jobfish

Pristipomoides sieboldii

DeepLog1

Turtle limpet

Cellana testudinaria

DeepLog1

Actitis hypoleucos

Nearby OBIS observations6

Arenaria interpres

Nearby OBIS observations6

Tringa brevipes

Nearby OBIS observations6

Charadrius alexandrinus

Nearby OBIS observations5

Pluvialis squatarola

Nearby OBIS observations5

Tringa nebularia

Nearby OBIS observations5

Tringa totanus ussuriensis

Nearby OBIS observations5

Calcinus laevimanus

Nearby OBIS observations4

Tridacna crocea

Nearby OBIS observations4

Calidris alpina

Nearby OBIS observations3

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

DeepLog + OBIS →