MARINE REPORT / 72 HOURS

Ishigaki Snorkel Report Today

Japan · Updated Wed 06:56 (JST) · Source: Snapshot

The skinny

Marginal Data updated Wed 06:56 (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 · 2.5/10

Wed 09:00 (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

06:47

Sunset

18:06

Water

26.9°C

Max air

25.4°C

Sky

Clear

22% 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 (68 hours)
  • Tide/current (67 hours)
  • Darkness (39 hours)

Jellyfish drift risk

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

Low · 34/100

Low peak drift risk around Wed 12:00.

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

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

Mon 09:00 – Thu 09:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.47 around Mon 17:00; 8 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 0.84m to 1.66m).

Wind is at or below 5.4m/s in 5/24 sampled hours (range 3.87 to 8.74m/s).

Tides range from 0.54m to 1.58m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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Poor ❌ Limited
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Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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 is better in daylight, so night hours score lower.
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Mon 09:00 0.84 · high 3.87 · good 29.30 · good Fair
Mon 10:00 0.86 · high 4.07 · good 29.30 · good Fair
Mon 11:00 0.90 · high 4.95 · good 29.40 · good Fair
Mon 12:00 0.92 · high 5.02 · good 29.50 · good Fair
Mon 13:00 0.94 · high 5.34 · good 29.50 · good Fair
Mon 14:00 0.96 · high 6.00 · high 29.60 · good Poor
Mon 15:00 0.98 · high 6.01 · high 29.60 · good Fair
Mon 16:00 1.04 · high 6.54 · high 29.60 · good Fair
Mon 17:00 1.10 · high 6.80 · high 29.60 · good Fair
Mon 18:00 1.16 · high 6.82 · high 29.50 · good Poor
Mon 19:00 1.28 · high 6.74 · high 29.50 · good Poor
Mon 20:00 1.34 · high 7.59 · high 29.50 · good Poor
Mon 21:00 1.42 · high 8.05 · high 29.50 · good Poor
Mon 22:00 1.48 · high 8.42 · high 29.50 · good Poor
Mon 23:00 1.52 · high 8.57 · high 29.40 · good Poor
Tue 00:00 1.58 · high 8.70 · high 29.40 · good Poor
Tue 01:00 1.58 · high 8.38 · high 29.40 · good Poor
Tue 02:00 1.60 · high 8.46 · high 29.30 · good Poor
Tue 03:00 1.58 · high 8.24 · high 29.30 · good Poor
Tue 04:00 1.60 · high 8.23 · high 29.20 · good Poor
Tue 05:00 1.64 · high 8.30 · high 29.20 · good Poor
Tue 06:00 1.66 · high 8.37 · high 29.20 · good Poor
Tue 07:00 1.66 · high 8.46 · high 29.10 · good Poor
Tue 08:00 1.66 · high 8.74 · high 29.10 · good Poor
Tue 09:00 1.66 · high 8.77 · high 29.10 · good Poor
Tue 10:00 1.62 · high 8.98 · high 29.10 · good Poor
Tue 11:00 1.60 · high 8.94 · high 29.10 · good Poor
Tue 12:00 1.56 · high 8.28 · high 29.10 · good Poor
Tue 13:00 1.54 · high 8.11 · high 29.10 · good Poor
Tue 14:00 1.54 · high 8.21 · high 29.10 · good Poor
Tue 15:00 1.52 · high 7.27 · high 29.10 · good Poor
Tue 16:00 1.50 · high 7.39 · high 29.10 · good Poor
Tue 17:00 1.48 · high 8.32 · high 29.10 · good Poor
Tue 18:00 1.46 · high 8.09 · high 29.00 · good Fair
Tue 19:00 1.48 · high 8.50 · high 29.00 · good Poor
Tue 20:00 1.58 · high 7.69 · high 29.00 · good Poor
Tue 21:00 1.58 · high 7.15 · high 28.90 · good Poor
Tue 22:00 1.56 · high 6.69 · high 28.90 · good Poor
Tue 23:00 1.54 · high 7.14 · high 28.90 · good Poor
Wed 00:00 1.52 · high 6.83 · high 28.80 · good Poor
Wed 01:00 1.48 · high 5.95 · high 28.80 · good Poor
Wed 02:00 1.42 · high 6.17 · high 28.80 · good Poor
Wed 03:00 1.40 · high 6.38 · high 28.70 · good Poor
Wed 04:00 1.40 · high 6.22 · high 28.70 · good Poor
Wed 05:00 1.40 · high 6.23 · high 28.70 · good Poor
Wed 06:00 1.40 · high 6.64 · high 28.60 · good Poor
Wed 07:00 1.40 · high 6.55 · high 28.60 · good Poor
Wed 08:00 1.42 · high 6.88 · high 28.60 · good Poor
Wed 09:00 1.42 · high 6.82 · high 28.60 · good Poor
Wed 10:00 1.42 · high 7.12 · high 28.60 · good Poor
Wed 11:00 1.44 · high 7.16 · high 28.60 · good Poor
Wed 12:00 1.44 · high 7.52 · high 28.70 · good Poor
Wed 13:00 1.44 · high 7.45 · high 28.70 · good Poor
Wed 14:00 1.42 · high 7.40 · high 28.80 · good Poor
Wed 15:00 1.42 · high 7.14 · high 28.80 · good Fair
Wed 16:00 1.42 · high 6.85 · high 28.80 · good Poor
Wed 17:00 1.42 · high 7.14 · high 28.80 · good Poor
Wed 18:00 1.42 · high 7.12 · high 28.70 · good Poor
Wed 19:00 1.42 · high 7.35 · high 28.70 · good Poor
Wed 20:00 1.40 · high 6.98 · high 28.70 · good Poor
Wed 21:00 1.40 · high 6.63 · high 28.60 · good Poor
Wed 22:00 1.40 · high 7.00 · high 28.60 · good Poor
Wed 23:00 1.38 · high 6.86 · high 28.60 · good Poor
Thu 00:00 1.38 · high 5.30 · good 28.50 · good Poor
Thu 01:00 1.30 · high 5.74 · high 28.50 · good Poor
Thu 02:00 1.28 · high 5.41 · high 28.50 · good Poor
Thu 03:00 1.26 · high 5.92 · high 28.40 · good Poor
Thu 04:00 1.26 · high 5.59 · high 28.40 · good Poor
Thu 05:00 1.28 · high 6.08 · high 28.40 · good Poor
Thu 06:00 1.28 · high 6.16 · high 28.30 · good Poor
Thu 07:00 1.30 · high 6.13 · high 28.30 · good Poor
Thu 08:00 1.30 · high 6.55 · high 28.30 · good Poor