MARINE REPORT / 72 HOURS

Ishigaki Snorkel Report Today

Japan · Updated Wed 03:49 (JST) · Source: Snapshot

The skinny

Marginal Data updated Wed 03:49 (JST)

Ishigaki looks marginal today. The least-bad daylight window is around Wed 18:00, but waves is limiting the forecast.

Right now (forecast)

Poor · 0.0/10

Wed 05:00 (JST)

Later today

Fair · 3.7/10

Wed 18:00 (JST)

Next three days

Fair · 4.9/10

Thu 14:00 (JST)

Model estimates using Open-Meteo; not observations or safety guarantees. Check official advisories and conditions at the beach.

Score: 3.7/10

Best time: Wed 18:00

Main risk: Waves

Best morning signal: Wed 10:00 (Poor).

Best afternoon signal: Wed 18:00 (Fair). Peak afternoon wind is about 7.8 m/s.

Email me when it is good

Sunrise

06:46

Sunset

18:07

Water

27.0°C

Max air

25.4°C

Sky

Partly cloudy

31% cloud

No good model window in the next 72 hours

Use the best-available section for the least-bad times.

3-day planner Best available Show data

3-day planner

Wednesday

⚠️ Fair conditions

Main blocker: Waves

Thursday

⚠️ Fair conditions

Main blocker: Waves

Friday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

  • Thu 14:00: Fair (0.49) · still limited by waves, tide/current
  • Thu 13:00: Fair (0.48) · still limited by waves, tide/current
  • Thu 11:00: Fair (0.40) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (69 hours)
  • Tide/current (68 hours)
  • Darkness (39 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: Wed 08:00

Wed 08:00, Wed 19:00, Thu 09:00, Thu 20:00, Fri 10:00, Fri 21:00

Nearby alternatives in Japan

Miyako

127 km away

❌ Poor

Kerama Islands

381 km away

❌ Poor

Okinawa - Blue Cave

438 km away

❌ Poor

Advanced forecast data

Viewing historical data

Fri 05:00 – Mon 05:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.32 around Fri 09:00; 0 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 1.24m to 1.44m).

Wind is at or below 5.4m/s in 5/24 sampled hours (range 5.01 to 7.64m/s).

Tides range from 0.35m to 1.81m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Poor ❌ Limited
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Fair ⚠️ Fair
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Poor ❌ Limited
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Fair ⚠️ Fair
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Poor ❌ Limited
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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 is better in daylight, so night hours score lower.
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Fri 05:00 1.26 · high 6.01 · high 28.40 · good Poor
Fri 06:00 1.24 · high 6.08 · high 28.40 · good Poor
Fri 07:00 1.26 · high 5.17 · good 28.40 · good Poor
Fri 08:00 1.26 · high 6.42 · high 28.40 · good Poor
Fri 09:00 1.28 · high 6.66 · high 28.40 · good Poor
Fri 10:00 1.28 · high 6.40 · high 28.50 · good Poor
Fri 11:00 1.30 · high 6.42 · high 28.50 · good Poor
Fri 12:00 1.30 · high 6.47 · high 28.60 · good Poor
Fri 13:00 1.32 · high 6.51 · high 28.60 · good Poor
Fri 14:00 1.32 · high 6.33 · high 28.60 · good Poor
Fri 15:00 1.34 · high 6.52 · high 28.70 · good Poor
Fri 16:00 1.36 · high 6.41 · high 28.70 · good Poor
Fri 17:00 1.38 · high 6.45 · high 28.70 · good Poor
Fri 18:00 1.40 · high 6.47 · high 28.70 · good Poor
Fri 19:00 1.40 · high 6.90 · high 28.70 · good Poor
Fri 20:00 1.42 · high 7.64 · high 28.70 · good Poor
Fri 21:00 1.44 · high 7.39 · high 28.70 · good Poor
Fri 22:00 1.42 · high 7.18 · high 28.70 · good Poor
Fri 23:00 1.40 · high 6.95 · high 28.70 · good Poor
Sat 00:00 1.38 · high 6.88 · high 28.70 · good Poor
Sat 01:00 1.42 · high 5.20 · good 28.70 · good Poor
Sat 02:00 1.38 · high 5.24 · good 28.60 · good Poor
Sat 03:00 1.34 · high 5.20 · good 28.60 · good Poor
Sat 04:00 1.30 · high 5.01 · good 28.60 · good Poor
Sat 05:00 1.28 · high 4.69 · good 28.60 · good Poor
Sat 06:00 1.24 · high 4.42 · good 28.60 · good Poor
Sat 07:00 1.22 · high 4.05 · good 28.60 · good Poor
Sat 08:00 1.18 · high 4.59 · good 28.60 · good Poor
Sat 09:00 1.16 · high 5.09 · good 28.60 · good Fair
Sat 10:00 1.14 · high 5.22 · good 28.60 · good Fair
Sat 11:00 1.12 · high 5.66 · high 28.60 · good Poor
Sat 12:00 1.10 · high 6.03 · high 28.70 · good Poor
Sat 13:00 1.08 · high 5.68 · high 28.70 · good Fair
Sat 14:00 1.06 · high 5.06 · good 28.70 · good Fair
Sat 15:00 1.04 · high 5.08 · good 28.70 · good Fair
Sat 16:00 1.04 · high 5.38 · good 28.70 · good Poor
Sat 17:00 1.04 · high 5.32 · good 28.70 · good Poor
Sat 18:00 1.04 · high 5.22 · good 28.70 · good Fair
Sat 19:00 1.04 · high 4.94 · good 28.60 · good Poor
Sat 20:00 0.86 · high 4.15 · good 28.60 · good Poor
Sat 21:00 0.84 · high 3.88 · good 28.60 · good Poor
Sat 22:00 0.84 · high 3.62 · good 28.50 · good Poor
Sat 23:00 0.82 · high 3.27 · good 28.50 · good Poor
Sun 00:00 0.82 · high 3.00 · good 28.50 · good Poor
Sun 01:00 0.80 · high 4.04 · good 28.40 · good Poor
Sun 02:00 0.80 · high 3.66 · good 28.40 · good Poor
Sun 03:00 0.78 · high 3.40 · good 28.40 · good Poor
Sun 04:00 0.76 · high 3.23 · good 28.30 · good Poor
Sun 05:00 0.76 · high 3.42 · good 28.30 · good Poor
Sun 06:00 0.74 · high 3.57 · good 28.30 · good Poor
Sun 07:00 0.74 · high 3.62 · good 28.30 · good Poor
Sun 08:00 0.74 · high 4.03 · good 28.30 · good Poor
Sun 09:00 0.74 · high 4.07 · good 28.30 · good Fair
Sun 10:00 0.74 · high 3.73 · good 28.30 · good Fair
Sun 11:00 0.74 · high 3.62 · good 28.40 · good Fair
Sun 12:00 0.74 · high 4.46 · good 28.40 · good Fair
Sun 13:00 0.76 · high 5.25 · good 28.50 · good Fair
Sun 14:00 0.76 · high 5.24 · good 28.60 · good Poor
Sun 15:00 0.78 · high 4.30 · good 28.60 · good Poor
Sun 16:00 0.82 · high 4.50 · good 28.60 · good Fair
Sun 17:00 0.84 · high 4.54 · good 28.70 · good Fair
Sun 18:00 0.88 · high 4.73 · good 28.70 · good Fair
Sun 19:00 0.90 · high 4.59 · good 28.60 · good Poor
Sun 20:00 0.88 · high 4.75 · good 28.60 · good Poor
Sun 21:00 0.90 · high 4.93 · good 28.60 · good Poor
Sun 22:00 0.92 · high 4.81 · good 28.60 · good Poor
Sun 23:00 0.92 · high 4.74 · good 28.50 · good Poor
Mon 00:00 0.94 · high 4.32 · good 28.50 · good Poor
Mon 01:00 0.90 · high 3.28 · good 28.50 · good Poor
Mon 02:00 0.90 · high 2.80 · good 28.50 · good Poor
Mon 03:00 0.88 · high 2.61 · good 28.50 · good Poor
Mon 04:00 0.88 · high 2.76 · good 28.50 · good Poor