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 Wed 03:54

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

Best morning signal: Wed 09:00 (Fair).

Best afternoon signal: Wed 17:00 (Fair). Peak afternoon wind is about 3.5 m/s.

Email me when it is good

Sunrise

06:10

Sunset

19:29

Water

30.4°C

Max air

30.7°C

Sky

Clear

26% 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

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 (31 hours)
Tide/current (31 hours)
Darkness (18 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

Wed 18:00 – Sat 18:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.39 around Thu 17:00; 2 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 0.94m to 1.12m).

Wind is at or below 5.4m/s in 6/24 sampled hours (range 4.48 to 7.29m/s).

Tides range from 0.05m to 2.07m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview

Wed 18:00 poor ❌ Limited

Wed 19:00 poor ❌ Limited

Wed 20:00 poor ❌ Limited

Wed 21:00 poor ❌ Limited

Wed 22:00 poor ❌ Limited

Wed 23:00 poor ❌ Limited

Thu 00:00 poor ❌ Limited

Thu 01:00 poor ❌ Limited

Thu 02:00 poor ❌ Limited

Thu 03:00 poor ❌ Limited

Thu 04:00 poor ❌ Limited

Thu 05:00 poor ❌ Limited

Thu 06:00 poor ❌ Limited

Thu 07:00 poor ❌ Limited

Thu 08:00 fair ⚠️ Fair

Thu 09:00 poor ❌ Limited

Thu 10:00 fair ⚠️ Fair

Thu 11:00 poor ❌ Limited

Thu 12:00 poor ❌ Limited

Thu 13:00 poor ❌ Limited

Thu 14:00 poor ❌ Limited

Thu 15:00 poor ❌ Limited

Thu 16:00 poor ❌ Limited

Thu 17:00 poor ❌ Limited

Thu 18:00 poor ❌ Limited

Thu 19:00 poor ❌ Limited

Thu 20:00 poor ❌ Limited

Thu 21:00 poor ❌ Limited

Thu 22:00 poor ❌ Limited

Thu 23:00 poor ❌ Limited

Fri 00:00 poor ❌ Limited

Fri 01:00 poor ❌ Limited

Fri 02:00 poor ❌ Limited

Fri 03:00 poor ❌ Limited

Fri 04:00 poor ❌ Limited

Fri 05:00 poor ❌ Limited

Fri 06:00 poor ❌ Limited

Fri 07:00 poor ❌ Limited

Fri 08:00 fair ⚠️ Fair

Fri 09:00 poor ❌ Limited

Fri 10:00 poor ❌ Limited

Fri 11:00 poor ❌ Limited

Fri 12:00 poor ❌ Limited

Fri 13:00 poor ❌ Limited

Fri 14:00 poor ❌ Limited

Fri 15:00 poor ❌ Limited

Fri 16:00 poor ❌ Limited

Fri 17:00 poor ❌ Limited

Fri 18:00 poor ❌ Limited

Fri 19:00 poor ❌ Limited

Fri 20:00 poor ❌ Limited

Fri 21:00 poor ❌ Limited

Fri 22:00 poor ❌ Limited

Fri 23:00 poor ❌ Limited

Sat 00:00 poor ❌ Limited

Sat 01:00 poor ❌ Limited

Sat 02:00 fair ⚠️ Fair

Sat 03:00 fair ⚠️ Fair

Sat 04:00 fair ⚠️ Fair

Sat 05:00 fair ⚠️ Fair

Sat 06:00 fair ⚠️ Fair

Sat 07:00 fair ⚠️ Fair

Sat 08:00 fair ⚠️ Fair

Sat 09:00 fair ⚠️ Fair

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

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
Wed 18:00	0.98 · high	5.28 · good	29.50 · good	poor
Wed 19:00	1.00 · high	5.63 · high	29.50 · good	poor
Wed 20:00	1.02 · high	5.47 · high	29.50 · good	poor
Wed 21:00	1.04 · high	5.44 · high	29.50 · good	poor
Wed 22:00	1.04 · high	5.38 · good	29.50 · good	poor
Wed 23:00	1.04 · high	5.58 · high	29.50 · good	poor
Thu 00:00	1.04 · high	5.69 · high	29.50 · good	poor
Thu 01:00	1.04 · high	5.44 · high	29.50 · good	poor
Thu 02:00	1.04 · high	5.57 · high	29.60 · good	poor
Thu 03:00	1.04 · high	5.68 · high	29.60 · good	poor
Thu 04:00	1.02 · high	6.21 · high	29.70 · good	poor
Thu 05:00	1.02 · high	6.26 · high	29.80 · good	poor
Thu 06:00	1.00 · high	6.04 · high	29.80 · good	poor
Thu 07:00	0.98 · high	6.26 · high	29.90 · good	poor
Thu 08:00	0.96 · high	5.86 · high	29.90 · good	fair
Thu 09:00	0.94 · high	5.22 · good	29.90 · good	poor
Thu 10:00	0.94 · high	4.49 · good	29.90 · good	fair
Thu 11:00	0.94 · high	4.48 · good	29.90 · good	poor
Thu 12:00	0.94 · high	4.66 · good	29.90 · good	poor
Thu 13:00	0.98 · high	5.61 · high	29.90 · good	poor
Thu 14:00	1.02 · high	6.29 · high	29.80 · good	poor
Thu 15:00	1.06 · high	6.79 · high	29.80 · good	poor
Thu 16:00	1.10 · high	7.29 · high	29.80 · good	poor
Thu 17:00	1.12 · high	6.94 · high	29.70 · good	poor
Thu 18:00	1.16 · high	6.92 · high	29.70 · good	poor
Thu 19:00	1.14 · high	6.78 · high	29.70 · good	poor
Thu 20:00	1.12 · high	6.62 · high	29.70 · good	poor
Thu 21:00	1.10 · high	6.01 · high	29.60 · good	poor
Thu 22:00	1.10 · high	6.41 · high	29.60 · good	poor
Thu 23:00	1.10 · high	6.56 · high	29.60 · good	poor
Fri 00:00	1.10 · high	7.02 · high	29.60 · good	poor
Fri 01:00	1.08 · high	6.97 · high	29.70 · good	poor
Fri 02:00	1.06 · high	7.18 · high	29.70 · good	poor
Fri 03:00	1.04 · high	7.11 · high	29.80 · good	poor
Fri 04:00	1.00 · high	6.73 · high	29.90 · good	poor
Fri 05:00	0.98 · high	5.23 · good	30.00 · good	poor
Fri 06:00	0.94 · high	5.07 · good	30.00 · good	poor
Fri 07:00	0.92 · high	4.49 · good	30.00 · good	poor
Fri 08:00	0.92 · high	4.10 · good	30.00 · good	fair
Fri 09:00	0.90 · high	4.60 · good	30.00 · good	poor
Fri 10:00	0.94 · high	5.21 · good	30.00 · good	poor
Fri 11:00	1.00 · high	5.61 · high	30.00 · good	poor
Fri 12:00	1.04 · high	6.29 · high	30.00 · good	poor
Fri 13:00	1.08 · high	6.30 · high	29.90 · good	poor
Fri 14:00	1.10 · high	6.74 · high	29.90 · good	poor
Fri 15:00	1.14 · high	6.93 · high	29.90 · good	poor
Fri 16:00	1.16 · high	5.92 · high	29.80 · good	poor
Fri 17:00	1.18 · high	6.74 · high	29.80 · good	poor
Fri 18:00	1.20 · high	6.47 · high	29.80 · good	poor
Fri 19:00	1.22 · high	6.91 · high	29.70 · good	poor
Fri 20:00	1.22 · high	7.62 · high	29.70 · good	poor
Fri 21:00	1.24 · high	7.41 · high	29.70 · good	poor
Fri 22:00	1.22 · high	7.14 · high	29.70 · good	poor
Fri 23:00	1.18 · high	6.54 · high	29.70 · good	poor
Sat 00:00	1.16 · high	6.42 · high	29.70 · good	poor
Sat 01:00	1.12 · high	5.53 · high	29.70 · good	poor
Sat 02:00	1.06 · high	4.84 · good	29.80 · good	fair
Sat 03:00	1.02 · high	4.41 · good	29.90 · good	fair
Sat 04:00	1.00 · high	4.14 · good	30.00 · good	fair
Sat 05:00	0.98 · high	4.43 · good	30.00 · good	fair
Sat 06:00	0.94 · high	3.96 · good	30.10 · good	fair
Sat 07:00	0.94 · high	3.26 · good	30.10 · good	fair
Sat 08:00	0.94 · high	2.36 · good	30.10 · good	fair
Sat 09:00	0.94 · high	2.09 · good	30.10 · good	fair
Sat 10:00	0.94 · high	1.66 · good	30.10 · good	fair
Sat 11:00	0.94 · high	1.95 · good	30.00 · good	poor
Sat 12:00	0.94 · high	2.86 · good	30.00 · good	poor
Sat 13:00	0.92 · high	3.39 · good	29.90 · good	poor
Sat 14:00	0.92 · high	3.86 · good	29.90 · good	poor
Sat 15:00	0.90 · high	2.51 · good	29.90 · good	poor
Sat 16:00	0.90 · high	3.01 · good	29.80 · good	poor
Sat 17:00	0.92 · high	3.20 · good	29.80 · good	poor