MARINE REPORT / 72 HOURS

Ishigaki Snorkel Report Today

Japan · Updated Tue 08:58 (JST) · Source: Snapshot

The skinny

Marginal Data updated Tue 08:58 (JST)

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

Right now (forecast)

Fair · 3.6/10

Tue 10:00 (JST)

Later today

Poor · 3.3/10

Tue 18:00 (JST)

Next three days

Fair · 4.5/10

Thu 18:00 (JST)

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

Score: 3.3/10

Best time: Tue 18:00

Main risk: Waves

Best morning signal: Tue 11:00 (Poor).

Best afternoon signal: Tue 18:00 (Poor). Peak afternoon wind is about 8.6 m/s.

Email me when it is good

Sunrise

06:46

Sunset

18:07

Water

27.2°C

Max air

26.1°C

Sky

Partly cloudy

49% 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

  • Thu 18:00: Fair (0.45) · still limited by waves, tide/current
  • Thu 17:00: Fair (0.45) · still limited by waves, tide/current
  • Thu 12:00: Fair (0.42) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (69 hours)
  • Tide/current (66 hours)
  • Darkness (41 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

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 current forecast

Tue 10:00 – Fri 10:00 (JST)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.33 around Tue 18:00; 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 1.34m to 1.7m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 6.67 to 9.04m/s).

Tides range from -0.04m to 1.92m; 2 of 24 hours are in or near peak slack windows.

72-hour forecast overview
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
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
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
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
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
Tue 11:00 1.34 · high 6.87 · high 27.20 · good Poor
Tue 12:00 1.34 · high 6.96 · high 27.30 · good Poor
Tue 13:00 1.34 · high 7.46 · high 27.30 · good Poor
Tue 14:00 1.36 · high 7.52 · high 27.40 · good Poor
Tue 15:00 1.36 · high 7.36 · high 27.40 · good Poor
Tue 16:00 1.40 · high 7.49 · high 27.40 · good Poor
Tue 17:00 1.42 · high 8.63 · high 27.40 · good Poor
Tue 18:00 1.46 · high 7.83 · high 27.30 · good Poor
Tue 19:00 1.46 · high 8.02 · high 27.30 · good Poor
Tue 20:00 1.44 · high 7.95 · high 27.30 · good Poor
Tue 21:00 1.44 · high 7.69 · high 27.20 · good Poor
Tue 22:00 1.42 · high 7.72 · high 27.20 · good Poor
Tue 23:00 1.42 · high 7.69 · high 27.20 · good Poor
Wed 00:00 1.40 · high 7.16 · high 27.10 · good Poor
Wed 01:00 1.40 · high 6.67 · high 27.10 · good Poor
Wed 02:00 1.40 · high 6.87 · high 27.10 · good Poor
Wed 03:00 1.40 · high 7.05 · high 27.00 · good Poor
Wed 04:00 1.46 · high 7.73 · high 27.00 · good Poor
Wed 05:00 1.50 · high 7.79 · high 27.00 · good Poor
Wed 06:00 1.56 · high 8.37 · high 27.00 · good Poor
Wed 07:00 1.60 · high 8.83 · high 26.90 · good Poor
Wed 08:00 1.66 · high 9.04 · high 26.90 · good Poor
Wed 09:00 1.70 · high 8.71 · high 26.90 · good Poor
Wed 10:00 1.66 · high 8.31 · high 26.90 · good Poor
Wed 11:00 1.60 · high 7.98 · high 27.00 · good Fair
Wed 12:00 1.56 · high 7.31 · high 27.00 · good Poor
Wed 13:00 1.50 · high 7.16 · high 27.10 · good Poor
Wed 14:00 1.46 · high 7.15 · high 27.10 · good Poor
Wed 15:00 1.40 · high 6.97 · high 27.10 · good Poor
Wed 16:00 1.38 · high 6.88 · high 27.10 · good Poor
Wed 17:00 1.36 · high 6.97 · high 27.10 · good Poor
Wed 18:00 1.34 · high 6.94 · high 27.10 · good Poor
Wed 19:00 1.32 · high 6.35 · high 27.10 · good Poor
Wed 20:00 1.32 · high 6.56 · high 27.10 · good Poor
Wed 21:00 1.30 · high 6.85 · high 27.10 · good Poor
Wed 22:00 1.28 · high 6.07 · high 27.10 · good Poor
Wed 23:00 1.28 · high 5.42 · high 27.00 · good Poor
Thu 00:00 1.26 · high 5.19 · good 27.00 · good Poor
Thu 01:00 1.24 · high 4.81 · good 27.00 · good Poor
Thu 02:00 1.20 · high 4.23 · good 27.00 · good Poor
Thu 03:00 1.18 · high 4.28 · good 27.00 · good Poor
Thu 04:00 1.16 · high 4.32 · good 27.00 · good Poor
Thu 05:00 1.12 · high 4.21 · good 26.90 · good Poor
Thu 06:00 1.10 · high 3.96 · good 26.90 · good Poor
Thu 07:00 1.06 · high 3.49 · good 26.90 · good Poor
Thu 08:00 1.04 · high 3.40 · good 26.90 · good Poor
Thu 09:00 1.00 · high 3.62 · good 26.90 · good Fair
Thu 10:00 0.98 · high 3.40 · good 27.00 · good Fair
Thu 11:00 0.94 · high 2.88 · good 27.00 · good Fair
Thu 12:00 0.92 · high 2.14 · good 27.10 · good Fair
Thu 13:00 0.90 · high 2.10 · good 27.20 · good Fair
Thu 14:00 0.90 · high 3.49 · good 27.20 · good Poor
Thu 15:00 0.88 · high 3.83 · good 27.30 · good Fair
Thu 16:00 0.88 · high 3.91 · good 27.30 · good Fair
Thu 17:00 0.86 · high 3.90 · good 27.30 · good Fair
Thu 18:00 0.86 · high 2.93 · good 27.30 · good Fair
Thu 19:00 0.84 · high 3.93 · good 27.20 · good Poor
Thu 20:00 0.84 · high 4.56 · good 27.20 · good Poor
Thu 21:00 0.82 · high 3.85 · good 27.20 · good Poor
Thu 22:00 0.80 · high 3.33 · good 27.20 · good Poor
Thu 23:00 0.80 · high 2.55 · good 27.20 · good Poor
Fri 00:00 0.78 · high 1.70 · good 27.30 · good Poor
Fri 01:00 0.76 · high 1.25 · good 27.30 · good Poor
Fri 02:00 0.76 · high 1.13 · good 27.30 · good Poor
Fri 03:00 0.74 · high 1.15 · good 27.30 · good Poor
Fri 04:00 0.72 · high 1.15 · good 27.30 · good Poor
Fri 05:00 0.72 · high 1.66 · good 27.30 · good Poor
Fri 06:00 0.70 · high 2.66 · good 27.20 · good Poor
Fri 07:00 0.70 · high 3.03 · good 27.20 · good Poor