Can you snorkel in Ishigaki today?

Yes. The next good snorkeling window in Ishigaki starts Thu 01:00. Around 3% of the next 72 hours are suitable.

What is the best time of day to snorkel in Ishigaki?

Snorkel during daylight, ideally in the morning before the wind picks up, and around high slack tide when water is clearest and currents are weakest. SnorkelForecast scores every daylight hour in Ishigaki so you can pick the calmest window.

What is the best tide for snorkeling?

High slack tide — within about an hour of the high-tide peak when currents are weakest — is the safest, clearest window. Strong low tides, strong tidal flow near channels or headlands, and large tidal-range days reduce score.

Ishigaki Snorkel Report Today

Japan · Updated Mon 02:30 (JST) · Source: Snapshot · Showing fallback/stale data

The skinny

Go in the best window Report Tue 19:53

Ishigaki has a usable snorkeling window around Thu 10:00. The main thing to watch is waves.

Score: 5.2/10

Best time: Thu 10:00

Main risk: Waves

No useful morning window is showing yet.

No useful afternoon window is showing yet.

Email me when it is good

Sunrise

06:10

Sunset

19:29

Water

30.7°C

Max air

28.4°C

Sky

Cloudy

72% cloud

Good window is available today

Next safe window: Thu 01:00 (3% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Tuesday

❌ poor conditions

Main blocker: Waves

Wednesday

⚠️ fair conditions

Main blocker: Waves

Thursday

✅ good conditions

Main blocker: Waves

Best available hours

Next safe window starts at Thu 01:00.

Why this verdict

Main blockers across the next 72 hours:

Waves (39 hours)
Tide/current (39 hours)
Darkness (26 hours)

Jellyfish drift risk

Drift estimate from wind, swell, current and warm water.

Low · 34/100

Low drift risk now.

warm water supports seasonal jellyfish activity; surface drift/current is noticeable; local shoreline exposure is not mapped yet.

Sightings override the model: if you see small purple jellyfish with long trailing tentacles, treat them as sting-capable and give them space.

Upcoming high tides

Next early morning high tide: Tue 21:00

Tue 21:00, Wed 10:00, Wed 22:00

Nearby alternatives in Japan

Miyako

127 km away

✅ Good

Kerama Islands

381 km away

✅ Good

Okinawa - Blue Cave

438 km away

✅ Good

Advanced forecast data

Viewing historical data

Sat 10:00 – Tue 10:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.46 around Sat 19:00; 6 of 24 hours are good, fair, or excellent.

Score trend, higher is better. Excellent ≥ 0.72, good 0.55–0.72, fair 0.35–0.55.

Conditions (24h trends)

Tap a chart to load just that series.

0/24 sampled hours stay at or below 0.36m (range 0.98m to 1.42m).

Wind is at or below 5.4m/s in 22/24 sampled hours (range 4.04 to 5.63m/s).

Tides range from 0.41m to 1.58m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview

Sat 10:00 fair ⚠️ Fair

Sat 11:00 poor ❌ Limited

Sat 12:00 poor ❌ Limited

Sat 13:00 poor ❌ Limited

Sat 14:00 poor ❌ Limited

Sat 15:00 poor ❌ Limited

Sat 16:00 poor ❌ Limited

Sat 17:00 poor ❌ Limited

Sat 18:00 poor ❌ Limited

Sat 19:00 poor ❌ Limited

Sat 20:00 poor ❌ Limited

Sat 21:00 poor ❌ Limited

Sat 22:00 poor ❌ Limited

Sat 23:00 poor ❌ Limited

Sun 00:00 fair ⚠️ Fair

Sun 01:00 fair ⚠️ Fair

Sun 02:00 fair ⚠️ Fair

Sun 03:00 fair ⚠️ Fair

Sun 04:00 poor ❌ Limited

Sun 05:00 poor ❌ Limited

Sun 06:00 poor ❌ Limited

Sun 07:00 poor ❌ Limited

Sun 08:00 poor ❌ Limited

Sun 09:00 fair ⚠️ Fair

Sun 10:00 fair ⚠️ Fair

Sun 11:00 poor ❌ Limited

Sun 12:00 poor ❌ Limited

Sun 13:00 poor ❌ Limited

Sun 14:00 poor ❌ Limited

Sun 15:00 poor ❌ Limited

Sun 16:00 poor ❌ Limited

Sun 17:00 poor ❌ Limited

Sun 18:00 poor ❌ Limited

Sun 19:00 poor ❌ Limited

Sun 20:00 poor ❌ Limited

Sun 21:00 poor ❌ Limited

Sun 22:00 poor ❌ Limited

Sun 23:00 poor ❌ Limited

Mon 00:00 fair ⚠️ Fair

Mon 01:00 fair ⚠️ Fair

Mon 02:00 poor ❌ Limited

Mon 03:00 poor ❌ Limited

Mon 04:00 fair ⚠️ Fair

Mon 05:00 fair ⚠️ Fair

Mon 06:00 poor ❌ Limited

Mon 07:00 fair ⚠️ Fair

Mon 08:00 fair ⚠️ Fair

Mon 09:00 fair ⚠️ Fair

Mon 10:00 fair ⚠️ Fair

Mon 11:00 poor ❌ Limited

Mon 12:00 poor ❌ Limited

Mon 13:00 poor ❌ Limited

Mon 14:00 poor ❌ Limited

Mon 15:00 poor ❌ Limited

Mon 16:00 poor ❌ Limited

Mon 17:00 poor ❌ Limited

Mon 18:00 poor ❌ Limited

Mon 19:00 poor ❌ Limited

Mon 20:00 poor ❌ Limited

Mon 21:00 poor ❌ Limited

Mon 22:00 poor ❌ Limited

Mon 23:00 poor ❌ Limited

Tue 00:00 good 🌟 Good

Tue 01:00 fair ⚠️ Fair

Tue 02:00 fair ⚠️ Fair

Tue 03:00 fair ⚠️ Fair

Tue 04:00 fair ⚠️ Fair

Tue 05:00 fair ⚠️ Fair

Tue 06:00 fair ⚠️ Fair

Tue 07:00 fair ⚠️ Fair

Tue 08:00 fair ⚠️ Fair

Tue 09:00 fair ⚠️ Fair

Scoring methodology (for technical users)

We score each hour from 0 to 1 using daylight and these weighted components:

Wave height (35%): best below 0.36m, then decreases as it rises.
Wind speed (25%): best below 5.4m/s, lower is better.
Sea surface temperature (15%): best within 20.6°C to 30.4°C.
Tide and currents (15%): best around slack/high-tide windows.
Daylight (10%): visibility and safety gate (outside daylight scores lower).

Detailed hourly data table

Time	Wave (m)	Wind (m/s)	Sea temp (°C)	Status
Sat 10:00	1.42 · high	5.08 · good	30.20 · good	fair
Sat 11:00	1.40 · high	5.03 · good	30.20 · good	poor
Sat 12:00	1.38 · high	5.55 · high	30.20 · good	poor
Sat 13:00	1.36 · high	5.63 · high	30.10 · good	poor
Sat 14:00	1.36 · high	5.38 · good	30.10 · good	poor
Sat 15:00	1.34 · high	5.01 · good	30.10 · good	poor
Sat 16:00	1.34 · high	5.05 · good	30.00 · good	poor
Sat 17:00	1.32 · high	5.09 · good	30.00 · good	poor
Sat 18:00	1.32 · high	4.87 · good	30.00 · good	poor
Sat 19:00	1.30 · high	4.64 · good	29.90 · good	poor
Sat 20:00	1.28 · high	4.35 · good	29.90 · good	poor
Sat 21:00	1.26 · high	4.49 · good	29.90 · good	poor
Sat 22:00	1.24 · high	4.57 · good	29.90 · good	poor
Sat 23:00	1.20 · high	4.77 · good	29.90 · good	poor
Sun 00:00	1.18 · high	4.88 · good	29.90 · good	fair
Sun 01:00	1.16 · high	4.96 · good	29.90 · good	fair
Sun 02:00	1.14 · high	5.06 · good	30.00 · good	fair
Sun 03:00	1.12 · high	5.06 · good	30.00 · good	fair
Sun 04:00	1.10 · high	4.70 · good	30.10 · good	poor
Sun 05:00	1.06 · high	4.38 · good	30.10 · good	poor
Sun 06:00	1.04 · high	4.40 · good	30.20 · good	poor
Sun 07:00	1.02 · high	4.04 · good	30.20 · good	poor
Sun 08:00	1.00 · high	4.12 · good	30.20 · good	poor
Sun 09:00	0.98 · high	4.06 · good	30.20 · good	fair
Sun 10:00	0.96 · high	3.86 · good	30.20 · good	fair
Sun 11:00	0.94 · high	3.55 · good	30.20 · good	poor
Sun 12:00	0.92 · high	3.47 · good	30.20 · good	poor
Sun 13:00	0.90 · high	3.51 · good	30.20 · good	poor
Sun 14:00	0.88 · high	3.33 · good	30.10 · good	poor
Sun 15:00	0.86 · high	3.18 · good	30.10 · good	poor
Sun 16:00	0.86 · high	2.94 · good	30.10 · good	poor
Sun 17:00	0.84 · high	2.72 · good	30.00 · good	poor
Sun 18:00	0.84 · high	2.93 · good	30.00 · good	poor
Sun 19:00	0.82 · high	3.32 · good	30.00 · good	poor
Sun 20:00	0.82 · high	3.64 · good	30.00 · good	poor
Sun 21:00	0.80 · high	4.00 · good	29.90 · good	poor
Sun 22:00	0.78 · high	3.72 · good	29.90 · good	poor
Sun 23:00	0.78 · high	3.28 · good	29.90 · good	poor
Mon 00:00	0.76 · high	3.05 · good	29.90 · good	fair
Mon 01:00	0.74 · high	2.97 · good	30.00 · good	fair
Mon 02:00	0.74 · high	3.05 · good	30.00 · good	poor
Mon 03:00	0.72 · high	3.65 · good	30.40 · good	poor
Mon 04:00	0.72 · high	3.56 · good	30.50 · out of range	fair
Mon 05:00	0.70 · high	3.69 · good	30.60 · out of range	fair
Mon 06:00	0.70 · high	3.57 · good	30.60 · out of range	poor
Mon 07:00	0.68 · high	3.30 · good	30.60 · out of range	fair
Mon 08:00	0.68 · high	3.17 · good	30.70 · out of range	fair
Mon 09:00	0.66 · high	2.93 · good	30.60 · out of range	fair
Mon 10:00	0.64 · high	2.50 · good	30.60 · out of range	fair
Mon 11:00	0.64 · high	2.46 · good	30.60 · out of range	poor
Mon 12:00	0.62 · high	2.62 · good	30.60 · out of range	poor
Mon 13:00	0.60 · high	2.83 · good	30.50 · out of range	poor
Mon 14:00	0.60 · high	2.66 · good	30.50 · out of range	poor
Mon 15:00	0.58 · high	2.58 · good	30.50 · out of range	poor
Mon 16:00	0.58 · high	2.45 · good	30.40 · good	poor
Mon 17:00	0.56 · high	2.32 · good	30.40 · good	poor
Mon 18:00	0.56 · high	2.27 · good	30.40 · good	poor
Mon 19:00	0.56 · high	2.06 · good	30.30 · good	poor
Mon 20:00	0.54 · high	1.74 · good	30.30 · good	poor
Mon 21:00	0.54 · high	1.93 · good	30.30 · good	poor
Mon 22:00	0.54 · high	2.62 · good	30.30 · good	poor
Mon 23:00	0.52 · high	2.98 · good	30.30 · good	poor
Tue 00:00	0.52 · high	3.34 · good	30.30 · good	good
Tue 01:00	0.54 · high	3.82 · good	30.30 · good	fair
Tue 02:00	0.54 · high	4.50 · good	30.40 · good	fair
Tue 03:00	0.56 · high	5.21 · good	30.50 · out of range	fair
Tue 04:00	0.56 · high	4.62 · good	30.60 · out of range	fair
Tue 05:00	0.58 · high	3.30 · good	30.70 · out of range	fair
Tue 06:00	0.58 · high	3.43 · good	30.70 · out of range	fair
Tue 07:00	0.58 · high	4.36 · good	30.70 · out of range	fair
Tue 08:00	0.58 · high	4.32 · good	30.70 · out of range	fair
Tue 09:00	0.58 · high	4.29 · good	30.70 · out of range	fair