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 · 0.0/10

Wed 07:00 (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

26.9°C

Max air

25.4°C

Sky

Clear

9% 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 (70 hours)
  • Tide/current (69 hours)
  • Darkness (40 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

Wed 07:00 – Sat 07:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.35 around Wed 15:00; 1 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 1.26m to 1.44m).

Wind is at or below 5.4m/s in 1/24 sampled hours (range 5.3 to 7.52m/s).

Tides range from 0.38m to 1.74m; 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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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
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
Thu 09:00 1.32 · high 6.82 · high 28.30 · good Poor
Thu 10:00 1.30 · high 6.40 · high 28.30 · good Poor
Thu 11:00 1.26 · high 6.45 · high 28.40 · good Poor
Thu 12:00 1.24 · high 6.80 · high 28.40 · good Poor
Thu 13:00 1.22 · high 6.33 · high 28.50 · good Fair
Thu 14:00 1.20 · high 6.22 · high 28.50 · good Poor
Thu 15:00 1.18 · high 6.14 · high 28.60 · good Poor
Thu 16:00 1.18 · high 6.40 · high 28.60 · good Poor
Thu 17:00 1.20 · high 6.07 · high 28.60 · good Poor
Thu 18:00 1.20 · high 6.42 · high 28.60 · good Poor
Thu 19:00 1.20 · high 6.55 · high 28.60 · good Poor
Thu 20:00 1.22 · high 6.81 · high 28.50 · good Poor
Thu 21:00 1.24 · high 6.53 · high 28.50 · good Poor
Thu 22:00 1.26 · high 6.54 · high 28.50 · good Poor
Thu 23:00 1.28 · high 6.39 · high 28.40 · good Poor
Fri 00:00 1.30 · high 5.27 · good 28.40 · good Poor
Fri 01:00 1.30 · high 5.35 · good 28.40 · good Poor
Fri 02:00 1.30 · high 5.90 · high 28.40 · good Poor
Fri 03:00 1.30 · high 6.05 · high 28.40 · good Poor
Fri 04:00 1.28 · high 6.09 · high 28.40 · good Poor
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