Hirase scuba diving weather

Boat dive · Zamami, Okinawa Prefecture · Show on map

Now · 00:00Fair

53out of 100

Good conditions. Steady until sunset.

Waves: 1.2 m
Wind: 18 kn from SW; gusts 25
Water: 26 °C; same down to ~56 m
Suit: 3 mm; whole dive

Tide Low ~04:00 · High ~10:48 · approximate

Hour by hour today

Tap an hour to see it above

Score	Waves	Wind (gusts)	Current	Swell	Tide	Water	Air	Rain	Limited by
53	1.2 m	18 (25 kn) ↓	0.4 kn	0.2 m · 5 s ↓	–	26.1 °C	25 °C	2.5 mm	waves
63	1.0 m	16 (25 kn) ↓	0.4 kn	0.8 m · 5 s ↓	–	26.1 °C	25 °C	5.4 mm	gusts
65	1.0 m	15 (23 kn) ↓	0.4 kn	0.9 m · 5 s ↓	–	26.1 °C	25 °C	6.4 mm	waves
71	1.0 m	13 (22 kn) ↓	0.3 kn	0.9 m · 5 s ↓	–	26.1 °C	25 °C	3.6 mm	waves
67	1.2 m	14 (19 kn) ↓	0.3 kn	0.9 m · 5 s ↓	Low ~04:00	26.1 °C	25 °C	4.7 mm	waves
65	1.3 m	14 (18 kn) ↓	0.2 kn	0.9 m · 5 s ↓	↑ rising	26.1 °C	25 °C	0.2 mm	waves
58	1.3 m	16 (23 kn) ↓	0.2 kn	0.8 m · 5 s ↓	↑ rising	26.1 °C	24 °C	1.4 mm	waves
62	1.3 m	14 (22 kn) ↓	0.3 kn	0.8 m · 5 s ↓	↑ rising	26.0 °C	25 °C	1.6 mm	waves
67	1.3 m	13 (19 kn) ↓	0.3 kn	0.8 m · 5 s ↓	↑ rising	26.0 °C	25 °C	0.4 mm	waves
71	1.2 m	11 (18 kn) ↓	0.3 kn	0.8 m · 5 s ↓	↑ rising	26.0 °C	25 °C	–	waves
71	1.2 m	10 (14 kn) ↓	0.2 kn	0.9 m · 5 s ↓	High ~10:48	26.0 °C	25 °C	–	waves
67	1.2 m	13 (16 kn) ↓	0.3 kn	1.0 m · 5 s ↓	↓ falling	26.0 °C	25 °C	–	waves
66	1.2 m	13 (17 kn) ↓	0.6 kn	1.0 m · 5 s ↓	↓ falling	26.0 °C	25 °C	–	waves
70	1.1 m	11 (17 kn) ↓	0.8 kn	1.0 m · 5 s ↓	↓ falling	26.0 °C	25 °C	–	waves
72	1.1 m	11 (15 kn) ↓	1.0 kn	1.0 m · 5 s ↓	↓ falling	26.0 °C	25 °C	–	waves
71	1.1 m	12 (15 kn) ↓	1.1 kn	1.0 m · 5 s ↓	↓ falling	26.0 °C	25 °C	–	waves
67	1.1 m	14 (18 kn) ↓	1.1 kn	0.9 m · 5 s ↓	Low ~16:07	26.0 °C	25 °C	0.1 mm	waves
69	1.1 m	15 (20 kn) ↓	1.1 kn	0.9 m · 5 s ↓	↑ rising	26.0 °C	25 °C	–	waves
71	1.1 m	15 (20 kn) ↓	0.9 kn	0.9 m · 5 s ↓	↑ rising	26.0 °C	25 °C	–	waves
74	1.1 m	14 (20 kn) ↓	0.7 kn	0.8 m · 5 s ↓	↑ rising	26.0 °C	25 °C	–	waves
77	1.1 m	13 (19 kn) ↓	0.5 kn	0.8 m · 5 s ↓	↑ rising	25.9 °C	25 °C	–	waves
78	1.1 m	12 (18 kn) ↓	0.4 kn	0.8 m · 5 s ↓	High ~21:40	25.9 °C	24 °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	25.9 °C	~56 m
Mon 16 Nov	25.9 °C	~56 m
Tue 17 Nov	25.8 °C	~56 m
Wed 18 Nov	25.9 °C	~56 m
Thu 19 Nov	25.7 °C	~56 m
Fri 20 Nov	25.6 °C	~56 m
Sat 21 Nov	25.5 °C	~56 m
Sun 22 Nov	25.4 °C	~56 m
Mon 23 Nov	25.3 °C	~56 m

~9 km model grid; nearest model water 3.7 km away, so channels and bays may differ. Daily averages; the thermocline can move several metres day to day.

Conditions at Hirase

Hirase is open to the sea from the NNE, S–SSW, so waves build there when the wind blows from those directions. Land shelters it from the ENE–SE, W–NW.

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 Nishihama (3.4 km, sheltered from the NNE, S–SSW).

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 NNE, S–SSW. Waves and swell from there reach the site.

Sheltered from ENE–SE, W–NW: land blocks the waves.

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

Location

Open Hirase on the map26.1994, 127.3262

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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