Blue Cave scuba diving weather

Shore dive · Okinawa Island, Okinawa Prefecture · Show on map

Now · 00:00Excellent

85out of 100

Excellent conditions. Steady until sunset.

Waves: 0.4 m
Wind: 10 kn from SSW; gusts 23 · offshore
Water: 26 °C; same down to ~56 m
Suit: 3 mm; whole dive

Tide Low ~04:13 · High ~11:06 · approximate

Hour by hour today

Tap an hour to see it above

Score	Waves	Wind (gusts)	Current	Swell	Tide	Water	Air	Rain	Limited by
85	0.4 m	10 (23 kn) ↓	0.5 kn	0.1 m · 4 s ↓	–	26.0 °C	23 °C	1.7 mm	gusts
87	0.4 m	10 (21 kn) ↓	0.7 kn	0.1 m · 4 s ↓	–	25.9 °C	23 °C	1.6 mm	current
85	0.5 m	12 (22 kn) ↓	0.5 kn	0.1 m · 5 s ↓	–	25.9 °C	23 °C	2.7 mm	gusts
58	0.5 m	14 (26 kn) ↓	0.7 kn	0.1 m · 5 s ↓	–	25.9 °C	23 °C	6.7 mm	gusts
72	0.6 m	9 (26 kn) ↓	0.7 kn	0.2 m · 5 s ↓	Low ~04:13	25.9 °C	23 °C	4.1 mm	gusts
90	0.7 m	9 (17 kn) ↓	0.5 kn	0.2 m · 5 s ↓	↑ rising	25.9 °C	23 °C	5.9 mm	rain
93	0.7 m	11 (20 kn) ↓	0.5 kn	0.2 m · 5 s ↓	↑ rising	25.9 °C	23 °C	0.1 mm	wind
97	0.7 m	9 (19 kn) ↓	0.5 kn	0.2 m · 5 s ↓	↑ rising	25.9 °C	23 °C	1.0 mm	current
100	0.7 m	9 (16 kn) ↓	0.4 kn	0.2 m · 4 s ↓	↑ rising	25.9 °C	23 °C	0.5 mm	–
100	0.6 m	8 (16 kn) ↓	0.3 kn	0.2 m · 4 s ↓	↑ rising	25.9 °C	24 °C	–	–
100	0.6 m	8 (15 kn) ↓	0.3 kn	0.2 m · 4 s ↓	↑ rising	25.9 °C	24 °C	–	–
98	0.6 m	10 (20 kn) ↓	0.4 kn	0.2 m · 4 s ↓	High ~11:06	25.9 °C	26 °C	–	wind
97	0.6 m	9 (21 kn) ↓	0.4 kn	0.2 m · 4 s ↓	↓ falling	25.9 °C	25 °C	0.1 mm	gusts
100	0.6 m	9 (19 kn) ↓	0.5 kn	0.2 m · 4 s ↓	↓ falling	26.0 °C	25 °C	0.2 mm	–
100	0.7 m	8 (19 kn) ↓	0.5 kn	0.2 m · 5 s ↓	↓ falling	26.0 °C	25 °C	–	–
94	0.7 m	9 (19 kn) ↓	0.6 kn	0.2 m · 5 s ↓	↓ falling	26.0 °C	26 °C	–	current
88	0.7 m	10 (20 kn) ↓	0.7 kn	0.2 m · 4 s ↓	Low ~16:26	26.0 °C	25 °C	0.1 mm	current
90	0.7 m	11 (21 kn) ↓	0.5 kn	0.2 m · 4 s ↓	↑ rising	26.0 °C	24 °C	0.1 mm	wind
79	0.9 m	9 (20 kn) ↓	0.7 kn	0.6 m · 4 s ↓	↑ rising	25.9 °C	24 °C	–	waves
84	0.9 m	9 (17 kn) ↓	0.5 kn	0.6 m · 4 s ↓	↑ rising	25.9 °C	24 °C	–	waves
83	0.9 m	8 (16 kn) ↓	0.5 kn	0.7 m · 4 s ↓	↑ rising	25.9 °C	23 °C	–	waves
84	0.9 m	7 (15 kn) ↓	0.5 kn	0.7 m · 4 s ↓	High ~21:53	25.9 °C	23 °C	–	waves

Waves and swell are adjusted for this site's shelter from the coastline. Arrows point where the wind and swell go. Night hours are shaded. Tide times come from an ocean model: usually within about half an hour, more in complex waters. Check official tide tables.

Water at depth

26 °C down to about 56 m. No thermocline above that.

Suit: 3 mm wetsuit for the whole dive.

Model estimate (Copernicus Marine), updated Sat 14 Nov. High confidence.

Temperature profile and next days

Day	Surface	Warm to
Sun 15 Nov	25.8 °C	~56 m
Mon 16 Nov	25.9 °C	~56 m
Tue 17 Nov	25.8 °C	~56 m
Wed 18 Nov	25.8 °C	~56 m
Thu 19 Nov	25.6 °C	~56 m
Fri 20 Nov	25.6 °C	~56 m
Sat 21 Nov	25.4 °C	~56 m
Sun 22 Nov	25.3 °C	~56 m
Mon 23 Nov	25.2 °C	~56 m

~9 km model grid; nearest model water 4.9 km away, so channels and bays may differ. Daily averages; the thermocline can move several metres day to day.

Conditions at Blue Cave

Blue Cave is open to the sea from the NW–NE, so waves build there when the wind blows from those directions. Land shelters it from the ESE–WNW.

Over the next 7 days it's good or better every day. Thu, Fri and Sat are only a trend so far.

When it's rough here, try Sunabe – Chatan (14 km, sheltered from the N–NE).

The water is 26 °C at the surface and stays warm past 56 m, so a 3 mm wetsuit suits most dives.

Shelter

Open to NW–NE. Waves and swell from there reach the site.

Sheltered from ESE–WNW: land blocks the waves.

Computed from the OpenStreetMap coastline. Wind itself is not reduced by shelter.

Location

Open Blue Cave on the map26.4440, 127.7729

Nearby dive sites

Scores are today's best daylight hour.

About this forecast

Updated Sun 15 Nov, 00:30 · weather run 06Z 14 Nov · waves run 00Z 14 Nov

Waves are adjusted for this site's shelter from the coastline.

Tides come from a coarse ocean model. The range, and whether tides are bigger or smaller this week, are about right. Times are usually within about half an hour, but complex tides (the Solent, Portland, narrow straits) are poor. Slack water isn't in the score yet: plan with official tide tables and local advice.

Water temperature in Okinawa Prefecture

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