Asia › Japan › Okinawa

Mermaid's Grotto

10–12 mMax Depth

BoatEntry

32Species

Conditions Summary

Model forecast · local time (GMT+9)

Model conditions signal91/100

Waves

0.7 m

8.7 s

Swell

0.6 m

9.2 s

Current speed

0.4 km/h

flowing toward SW

Water temperature

28.0°C

Wind

12.2 km/h

→ NE

Sea level

0.6 m

rising

WavesWatch

SwellCalm

Current speedCalm

Planning window

10:00–11:00

Calmest model window

Forecast Overview

TodayWatch

Waves0.7–1.1 mCurrent speed0.9 km/h maxWater temperature28.1°C

TomorrowChallenging

Waves1.2–1.5 mCurrent speed0.9 km/h maxWater temperature27.8°C

Fri, Oct 23Challenging

Waves1.5–1.7 mCurrent speed0.7 km/h maxWater temperature27.7°C

Sat, Oct 24Challenging

Waves1.5–1.6 mCurrent speed0.5 km/h maxWater temperature27.6°C

Next 72 hours

10:00

Waves: 0.7 m

Current speed: 0.4 km/h

Water temperature: 28.0°C

16:00

Waves: 0.9 m

Current speed: 0.6 km/h

Water temperature: 28.2°C

22:00

Waves: 1.1 m

Current speed: 0.9 km/h

Water temperature: 28.0°C

04:00

Waves: 1.3 m

Current speed: 0.8 km/h

Water temperature: 27.9°C

10:00

Waves: 1.5 m

Current speed: 0.8 km/h

Water temperature: 27.8°C

16:00

Waves: 1.5 m

Current speed: 0.4 km/h

Water temperature: 27.8°C

22:00

Waves: 1.5 m

Current speed: 0.4 km/h

Water temperature: 27.7°C

04:00

Waves: 1.5 m

Current speed: 0.6 km/h

Water temperature: 27.7°C

10:00

Waves: 1.6 m

Current speed: 0.6 km/h

Water temperature: 27.6°C

16:00

Waves: 1.6 m

Current speed: 0.7 km/h

Water temperature: 27.7°C

22:00

Waves: 1.6 m

Current speed: 0.5 km/h

Water temperature: 27.6°C

04:00

Waves: 1.6 m

Current speed: 0.4 km/h

Water temperature: 27.6°C

Catalog depth10–12 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: 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.