Japan

Hate No Hama

8–15 mMax Depth

boatEntry

2Species

Conditions Summary

Model forecast · local time (GMT+9)

Model conditions signal71/100

Waves

1.3 m

10.3 s

Swell

1.2 m

9.2 s

Current speed

0.8 km/h

flowing toward SW

Water temperature

28.4°C

Wind

22.5 km/h

→ NE

Sea level

1.1 m

falling

WavesChallenging

SwellWatch

Current speedCalm

Forecast Overview

Tue, Oct 20Challenging

Waves1.3–1.5 mCurrent speed0.9 km/h maxWater temperature28.4°C

TodayChallenging

Waves1.5–3.5 mCurrent speed1.8 km/h maxWater temperature28.3°C

TomorrowChallenging

Waves3.6–4.8 mCurrent speed2.0 km/h maxWater temperature28.2°C

Fri, Oct 23Challenging

Waves4.7–5.1 mCurrent speed0.9 km/h maxWater temperature28.1°C

Next 72 hours

19:00

Waves: 1.3 m

Current speed: 0.8 km/h

Water temperature: 28.5°C

01:00

Waves: 1.6 m

Current speed: 0.9 km/h

Water temperature: 28.3°C

07:00

Waves: 1.8 m

Current speed: 0.8 km/h

Water temperature: 28.3°C

13:00

Waves: 2.3 m

Current speed: 1.4 km/h

Water temperature: 28.4°C

19:00

Waves: 2.9 m

Current speed: 1.5 km/h

Water temperature: 28.3°C

01:00

Waves: 3.7 m

Current speed: 1.9 km/h

Water temperature: 28.2°C

07:00

Waves: 4.5 m

Current speed: 1.7 km/h

Water temperature: 28.2°C

13:00

Waves: 4.8 m

Current speed: 1.5 km/h

Water temperature: 28.2°C

19:00

Waves: 4.6 m

Current speed: 0.9 km/h

Water temperature: 28.2°C

01:00

Waves: 4.7 m

Current speed: 0.7 km/h

Water temperature: 28.1°C

07:00

Waves: 4.8 m

Current speed: 0.5 km/h

Water temperature: 28.1°C

13:00

Waves: 4.9 m

Current speed: 0.6 km/h

Water temperature: 28.2°C

Catalog depth8–15 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

Not available

Peak month

Aug 29.0°

Jan22.6°

Feb21.9°

Mar22.2°

Apr23.3°

May25.0°

Jun27.0°

Jul28.9°

Aug29.0°

Sep28.4°

Oct26.9°

Nov25.4°

Dec23.9°

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.

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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

White-banded triggerfish

Rhinecanthus aculeatus

DeepLog1

Yellowmargin triggerfish

Pseudobalistes flavimarginatus

DeepLog1

Humpback whale

Megaptera novaeangliae

Nearby OBIS observations20

Holothuria leucospilota

Nearby OBIS observations16

Chelonia mydas

Nearby OBIS observations5

Coenobita purpureus

Nearby OBIS observations5

Elysia

Nearby OBIS observations5

Lioconcha castrensis

Nearby OBIS observations4

Monetaria annulus

Nearby OBIS observations4

Conus omaria

Nearby OBIS observations3

Holothuria atra

Nearby OBIS observations3

Melithaea

Nearby OBIS observations3

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

DeepLog + OBIS →

Photos