MARINE REPORT / 72 HOURS

Ishigaki Snorkel Report Today

Japan · Updated Tue 12:06 (JST) · Source: Snapshot

The skinny

Marginal Data updated Tue 12:06 (JST)

Ishigaki looks marginal today. The least-bad daylight window is around Tue 17:00, but waves is limiting the forecast.

Right now (forecast)

Poor · 3.0/10

Tue 12:00 (JST)

Later today

Poor · 3.5/10

Tue 17:00 (JST)

Next three days

Fair · 4.5/10

Fri 09:00 (JST)

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

Score: 3.5/10

Best time: Tue 17:00

Main risk: Waves

No useful morning window is showing yet.

Best afternoon signal: Tue 17:00 (Poor). Peak afternoon wind is about 8.1 m/s.

Email me when it is good

Sunrise

06:46

Sunset

18:07

Water

27.3°C

Max air

25.9°C

Sky

Partly cloudy

55% 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

Tuesday

❌ Poor conditions

Main blocker: Waves

Wednesday

⚠️ Fair conditions

Main blocker: Waves

Thursday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

  • Fri 09:00: Fair (0.45) · still limited by waves, tide/current
  • Thu 10:00: Fair (0.45) · still limited by waves, tide/current
  • Fri 10:00: Fair (0.43) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (71 hours)
  • Tide/current (68 hours)
  • Darkness (42 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

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

Nearby alternatives in Japan

Miyako

127 km away

⚠️ Fair

Kerama Islands

381 km away

❌ Poor

Okinawa - Blue Cave

438 km away

❌ Poor

Advanced forecast data

Viewing historical data

Sun 12:00 – Wed 12:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.4 around Mon 10:00; 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 1.14m to 1.94m).

Wind is at or below 5.4m/s in 7/24 sampled hours (range 4.7 to 8.05m/s).

Tides range from 0.32m to 2.01m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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
Sun 12:00 1.94 · high 7.35 · high 28.00 · good Poor
Sun 13:00 1.88 · high 8.05 · high 28.10 · good Poor
Sun 14:00 1.82 · high 7.66 · high 28.10 · good Fair
Sun 15:00 1.76 · high 7.52 · high 28.20 · good Poor
Sun 16:00 1.70 · high 7.52 · high 28.20 · good Poor
Sun 17:00 1.64 · high 7.06 · high 28.20 · good Fair
Sun 18:00 1.58 · high 6.26 · high 28.20 · good Fair
Sun 19:00 1.62 · high 6.45 · high 28.00 · good Poor
Sun 20:00 1.58 · high 6.17 · high 28.00 · good Poor
Sun 21:00 1.52 · high 6.19 · high 28.00 · good Poor
Sun 22:00 1.48 · high 5.73 · high 28.00 · good Poor
Sun 23:00 1.42 · high 5.46 · high 28.00 · good Poor
Mon 00:00 1.38 · high 5.53 · high 28.00 · good Poor
Mon 01:00 1.34 · high 6.27 · high 28.00 · good Poor
Mon 02:00 1.30 · high 6.05 · high 27.90 · good Poor
Mon 03:00 1.26 · high 5.95 · high 27.90 · good Poor
Mon 04:00 1.22 · high 5.85 · high 27.90 · good Poor
Mon 05:00 1.18 · high 5.40 · good 27.90 · good Poor
Mon 06:00 1.14 · high 5.36 · good 27.90 · good Poor
Mon 07:00 1.28 · high 5.14 · good 27.90 · good Poor
Mon 08:00 1.26 · high 5.22 · good 27.90 · good Poor
Mon 09:00 1.22 · high 5.10 · good 27.90 · good Fair
Mon 10:00 1.20 · high 4.70 · good 28.00 · good Fair
Mon 11:00 1.18 · high 4.74 · good 28.00 · good Fair
Mon 12:00 1.16 · high 4.94 · good 28.10 · good Fair
Mon 13:00 1.14 · high 4.79 · good 28.20 · good Fair
Mon 14:00 1.10 · high 4.14 · good 28.20 · good Fair
Mon 15:00 1.08 · high 3.75 · good 28.30 · good Fair
Mon 16:00 1.06 · high 3.16 · good 28.30 · good Fair
Mon 17:00 1.04 · high 2.69 · good 28.30 · good Fair
Mon 18:00 1.02 · high 2.73 · good 28.30 · good Fair
Mon 19:00 1.00 · high 2.98 · good 28.20 · good Poor
Mon 20:00 0.92 · high 4.60 · good 28.30 · good Poor
Mon 21:00 0.92 · high 4.80 · good 28.30 · good Poor
Mon 22:00 0.92 · high 4.75 · good 28.30 · good Poor
Mon 23:00 0.92 · high 5.20 · good 28.20 · good Poor
Tue 00:00 0.92 · high 4.96 · good 28.20 · good Poor
Tue 01:00 0.94 · high 4.53 · good 28.20 · good Poor
Tue 02:00 0.94 · high 4.58 · good 28.20 · good Poor
Tue 03:00 0.96 · high 5.04 · good 28.10 · good Poor
Tue 04:00 0.96 · high 4.88 · good 28.10 · good Poor
Tue 05:00 0.98 · high 5.65 · high 28.10 · good Poor
Tue 06:00 0.98 · high 5.84 · high 28.00 · good Poor
Tue 07:00 1.00 · high 6.32 · high 28.00 · good Poor
Tue 08:00 1.26 · high 6.46 · high 27.90 · good Poor
Tue 09:00 1.28 · high 6.83 · high 27.90 · good Poor
Tue 10:00 1.28 · high 7.07 · high 27.90 · good Poor
Tue 11:00 1.30 · high 7.53 · high 27.90 · good Poor
Tue 12:00 1.30 · high 7.64 · high 28.00 · good Poor
Tue 13:00 1.34 · high 7.46 · high 28.00 · good Poor
Tue 14:00 1.38 · high 6.78 · high 28.00 · good Poor
Tue 15:00 1.42 · high 7.25 · high 28.00 · good Fair
Tue 16:00 1.42 · high 6.31 · high 28.00 · good Poor
Tue 17:00 1.42 · high 7.53 · high 27.90 · good Poor
Tue 18:00 1.32 · high 7.05 · high 27.90 · good Poor
Tue 19:00 1.30 · high 7.70 · high 27.80 · good Poor
Tue 20:00 1.30 · high 6.98 · high 27.80 · good Poor
Tue 21:00 1.28 · high 6.73 · high 27.70 · good Poor
Tue 22:00 1.30 · high 6.24 · high 27.70 · good Poor
Tue 23:00 1.34 · high 6.20 · high 27.60 · good Poor
Wed 00:00 1.36 · high 6.60 · high 27.60 · good Poor
Wed 01:00 1.38 · high 6.69 · high 27.50 · good Poor
Wed 02:00 1.38 · high 7.52 · high 27.50 · good Poor
Wed 03:00 1.40 · high 7.80 · high 27.40 · good Poor
Wed 04:00 1.44 · high 7.76 · high 27.40 · good Poor
Wed 05:00 1.48 · high 7.10 · high 27.30 · good Poor
Wed 06:00 1.48 · high 8.65 · high 27.30 · good Poor
Wed 07:00 1.52 · high 8.80 · high 27.30 · good Poor
Wed 08:00 1.58 · high 8.96 · high 27.20 · good Poor
Wed 09:00 1.62 · high 8.97 · high 27.20 · good Poor
Wed 10:00 1.60 · high 8.33 · high 27.20 · good Poor
Wed 11:00 1.56 · high 8.21 · high 27.30 · good Poor