Sakieda Big Arch scuba diving weather

Boat dive · Ishigaki, Okinawa Prefecture · Show on map

Now · 00:00Excellent

99out of 100

Excellent conditions. Best 07:00–11:00. From 13:00 gusts pick up and it turns good. From 16:00 it improves to excellent.

Waves: 0.4 m
Wind: 1 kn from WNW; gusts 8
Water: 26 °C; same down to ~56 m
Suit: 3 mm; whole dive

Tide Low ~04:33 · High ~11:17 · Bigger tides · approximate

Hour by hour today

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Score	Waves	Wind (gusts)	Current	Swell	Tide	Water	Air	Rain	Limited by
99	0.4 m	1 (8 kn) ↓	0.5 kn	0.1 m · 5 s ↓	–	26.3 °C	24 °C	1.9 mm	rain
98	0.5 m	2 (7 kn) ↓	0.4 kn	0.1 m · 4 s ↓	–	26.3 °C	24 °C	2.8 mm	rain
96	0.5 m	4 (11 kn) ↓	0.4 kn	0.1 m · 4 s ↓	–	26.3 °C	23 °C	4.2 mm	rain
0	0.5 m	4 (9 kn) ↓	0.4 kn	0.1 m · 3 s ↓	–	26.3 °C	23 °C	18.8 mm	rain
0	0.5 m	1 (12 kn) ↓	0.5 kn	0.1 m · 3 s ↓	Low ~04:33	26.3 °C	23 °C	14.7 mm	rain
93	0.6 m	3 (9 kn) ↓	0.5 kn	0.1 m · 4 s ↓	↑ rising	26.3 °C	23 °C	5.7 mm	rain
98	0.7 m	9 (16 kn) ↓	0.4 kn	0.1 m · 4 s ↓	↑ rising	26.2 °C	23 °C	2.6 mm	rain
100	0.7 m	8 (17 kn) ↓	0.3 kn	0.1 m · 4 s ↓	↑ rising	26.2 °C	23 °C	0.2 mm	–
100	0.7 m	8 (16 kn) ↓	0.2 kn	0.1 m · 5 s ↓	↑ rising	26.2 °C	24 °C	0.1 mm	–
100	0.7 m	9 (18 kn) ↓	0.2 kn	0.2 m · 5 s ↓	↑ rising	26.2 °C	24 °C	–	wind
90	0.6 m	10 (23 kn) ↓	0.2 kn	0.2 m · 5 s ↓	↑ rising	26.2 °C	25 °C	–	gusts
81	0.6 m	11 (25 kn) ↓	0.3 kn	0.2 m · 5 s ↓	High ~11:17	26.3 °C	26 °C	–	gusts
82	0.6 m	10 (25 kn) ↓	0.2 kn	0.2 m · 5 s ↓	↓ falling	26.3 °C	26 °C	–	gusts
77	0.5 m	12 (26 kn) ↓	0.2 kn	0.2 m · 5 s ↓	↓ falling	26.3 °C	26 °C	–	gusts
77	0.4 m	12 (26 kn) ↓	0.3 kn	0.2 m · 5 s ↓	↓ falling	26.3 °C	26 °C	–	gusts
78	0.4 m	12 (26 kn) ↓	0.3 kn	0.2 m · 5 s ↓	↓ falling	26.3 °C	26 °C	–	gusts
80	0.5 m	12 (26 kn) ↓	0.5 kn	0.2 m · 5 s ↓	Low ~16:10	26.3 °C	25 °C	–	gusts
81	0.5 m	12 (25 kn) ↓	0.5 kn	0.1 m · 5 s ↓	↑ rising	26.3 °C	25 °C	–	gusts
82	0.5 m	12 (25 kn) ↓	0.5 kn	0.1 m · 5 s ↓	↑ rising	26.3 °C	25 °C	–	gusts
82	0.6 m	12 (25 kn) ↓	0.5 kn	0.2 m · 5 s ↓	↑ rising	26.3 °C	24 °C	–	gusts
79	0.6 m	12 (25 kn) ↓	0.4 kn	0.2 m · 4 s ↓	↑ rising	26.2 °C	24 °C	–	gusts
81	0.8 m	11 (25 kn) ↓	0.4 kn	0.6 m · 4 s ↓	↑ rising	26.2 °C	24 °C	0.1 mm	gusts

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	Dive depth
Sun 15 Nov	26.2 °C	~56 m	26.2 °C
Mon 16 Nov	26.2 °C	~56 m	26.2 °C
Tue 17 Nov	26.3 °C	~56 m	26.2 °C
Wed 18 Nov	26.2 °C	~56 m	26.2 °C
Thu 19 Nov	26.0 °C	~56 m	26.0 °C
Fri 20 Nov	25.9 °C	~56 m	25.9 °C
Sat 21 Nov	25.8 °C	~56 m	25.8 °C
Sun 22 Nov	25.7 °C	~56 m	25.7 °C
Mon 23 Nov	25.6 °C	~56 m	25.6 °C

~9 km model grid; nearest model water 3.6 km away, so channels and bays may differ. Daily averages; the thermocline can move several metres day to day.

Conditions at Sakieda Big Arch

Sakieda Big Arch is open to the sea from the W–N, so waves build there when the wind blows from those directions.

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 Miyara Bay Naka-no-se (16 km, sheltered from the W–N).

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 W–N. Waves and swell from there reach the site.

Sheltered from NNE–WSW: land blocks the waves.

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

Location

Open Sakieda Big Arch on the map24.4556, 124.1043

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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