Japan

佐久原

8–25 mMax Depth

boatEntry

2Species

Conditions Summary

Model forecast · local time (GMT+9)

Model conditions signal91/100

Waves

0.7 m

4.8 s

Swell

0.4 m

4.8 s

Current speed

0.4 km/h

flowing toward W

Water temperature

28.2°C

Wind

19.6 km/h

→ E

Sea level

1.0 m

falling

WavesWatch

SwellCalm

Current speedCalm

Planning window

13:45–13:00

Calmest model window

Forecast Overview

Sat, Oct 17Challenging

Waves0.7–1.3 mCurrent speed1.1 km/h maxWater temperature28.2°C

Sun, Oct 18Watch

Waves1.0–1.3 mCurrent speed1.0 km/h maxWater temperature28.1°C

Mon, Oct 19Watch

Waves0.8–1.0 mCurrent speed1.1 km/h maxWater temperature28.2°C

Tue, Oct 20Challenging

Waves1.0–1.4 mCurrent speed0.9 km/h maxWater temperature28.1°C

Next 72 hours

13:00

Waves: 0.7 m

Current speed: 0.6 km/h

Water temperature: 28.2°C

19:00

Waves: 1.1 m

Current speed: 0.9 km/h

Water temperature: 28.2°C

01:00

Waves: 1.3 m

Current speed: 0.5 km/h

Water temperature: 28.1°C

07:00

Waves: 1.1 m

Current speed: 0.6 km/h

Water temperature: 28.1°C

13:00

Waves: 1.0 m

Current speed: 0.6 km/h

Water temperature: 28.2°C

19:00

Waves: 1.0 m

Current speed: 0.4 km/h

Water temperature: 28.1°C

01:00

Waves: 1.0 m

Current speed: 0.6 km/h

Water temperature: 28.0°C

07:00

Waves: 0.9 m

Current speed: 0.8 km/h

Water temperature: 28.0°C

13:00

Waves: 0.8 m

Current speed: 1.0 km/h

Water temperature: 28.3°C

19:00

Waves: 0.9 m

Current speed: 0.3 km/h

Water temperature: 28.3°C

01:00

Waves: 1.0 m

Current speed: 0.5 km/h

Water temperature: 28.1°C

07:00

Waves: 1.2 m

Current speed: 0.6 km/h

Water temperature: 28.0°C

Catalog depth8–25 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

Apr-Nov

Peak month

Aug 28.9°

Jan22.6°

Feb21.7°

Mar21.8°

Apr22.9°

May24.8°

Jun26.9°

Jul28.7°

Aug28.9°

Sep28.3°

Oct27.0°

Nov25.4°

Dec23.9°

Current: moderate

Typical visibility: 10 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

Loading…

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

Lined surgeonfish

Acanthurus lineatus

DeepLog1

Sunburst butterflyfish

Chaetodon kleinii

DeepLog1

Humpback whale

Megaptera novaeangliae

Nearby OBIS observations30

Acropora

Nearby OBIS observations5

Montipora

Nearby OBIS observations5

アオウミガメ

Chelonia mydas

Nearby OBIS observations5

Acropora intermedia

Nearby OBIS observations4

Acropora tenuis

Nearby OBIS observations4

Acropora monticulosa

Nearby OBIS observations3

Acropora nasuta

Nearby OBIS observations3

Ampithoe

Nearby OBIS observations3

Montipora aequituberculata

Nearby OBIS observations3

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

DeepLog + OBIS →

Photos