MARINE REPORT / 72 HOURS

Ishigaki Snorkel Report Today

Japan · Updated Wed 10:03 (JST) · Source: Snapshot

The skinny

Marginal Data updated Wed 10:03 (JST)

Ishigaki looks marginal today. The least-bad daylight window is around Wed 16:00, but waves is limiting the forecast.

Right now (forecast)

Fair · 3.9/10

Wed 11:00 (JST)

Later today

Poor · 3.3/10

Wed 16:00 (JST)

Next three days

Fair · 4.6/10

Thu 17:00 (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: Wed 16:00

Main risk: Waves

No useful morning window is showing yet.

Best afternoon signal: Wed 16:00 (Poor). Peak afternoon wind is about 7.7 m/s.

Email me when it is good

Sunrise

06:47

Sunset

18:06

Water

27.0°C

Max air

25.2°C

Sky

Partly cloudy

65% 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

❌ Poor conditions

Main blocker: Waves

Thursday

⚠️ Fair conditions

Main blocker: Waves

Friday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

  • Thu 17:00: Fair (0.46) · still limited by waves, tide/current
  • Thu 16:00: Fair (0.45) · still limited by waves, tide/current
  • Thu 09:00: Fair (0.42) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (70 hours)
  • Tide/current (69 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

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

Sat 11:00 – Tue 11:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.55 around Sun 09:00; 9 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 0.64m to 0.86m).

Wind is at or below 5.4m/s in 22/24 sampled hours (range 1.93 to 5.7m/s).

Tides range from 0.54m to 1.6m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
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
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
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
Sat 11:00 0.84 · high 5.38 · good 29.50 · good Fair
Sat 12:00 0.86 · high 5.39 · good 29.60 · good Fair
Sat 13:00 0.86 · high 4.83 · good 29.70 · good Fair
Sat 14:00 0.86 · high 4.82 · good 29.80 · good Fair
Sat 15:00 0.86 · high 5.70 · high 29.80 · good Poor
Sat 16:00 0.84 · high 5.64 · high 29.80 · good Fair
Sat 17:00 0.84 · high 5.19 · good 29.80 · good Fair
Sat 18:00 0.82 · high 4.80 · good 29.80 · good Fair
Sat 19:00 0.80 · high 4.51 · good 29.80 · good Poor
Sat 20:00 0.84 · high 4.44 · good 29.70 · good Poor
Sat 21:00 0.82 · high 4.39 · good 29.70 · good Poor
Sat 22:00 0.80 · high 3.97 · good 29.70 · good Poor
Sat 23:00 0.76 · high 3.65 · good 29.60 · good Poor
Sun 00:00 0.74 · high 3.27 · good 29.60 · good Poor
Sun 01:00 0.86 · high 3.76 · good 29.60 · good Poor
Sun 02:00 0.82 · high 3.30 · good 29.60 · good Poor
Sun 03:00 0.80 · high 2.67 · good 29.60 · good Poor
Sun 04:00 0.78 · high 2.16 · good 29.60 · good Poor
Sun 05:00 0.74 · high 2.09 · good 29.50 · good Poor
Sun 06:00 0.72 · high 1.93 · good 29.50 · good Poor
Sun 07:00 0.70 · high 1.93 · good 29.50 · good Poor
Sun 08:00 0.68 · high 2.67 · good 29.50 · good Poor
Sun 09:00 0.66 · high 2.63 · good 29.50 · good Fair
Sun 10:00 0.64 · high 2.60 · good 29.50 · good Fair
Sun 11:00 0.64 · high 2.71 · good 29.50 · good Fair
Sun 12:00 0.62 · high 2.74 · good 29.60 · good Fair
Sun 13:00 0.62 · high 2.89 · good 29.70 · good Fair
Sun 14:00 0.62 · high 3.17 · good 29.70 · good Fair
Sun 15:00 0.62 · high 3.22 · good 29.70 · good Fair
Sun 16:00 0.62 · high 3.58 · good 29.70 · good Fair
Sun 17:00 0.64 · high 3.91 · good 29.70 · good Fair
Sun 18:00 0.64 · high 3.81 · good 29.70 · good Fair
Sun 19:00 0.66 · high 3.67 · good 29.60 · good Poor
Sun 20:00 0.70 · high 3.20 · good 29.70 · good Poor
Sun 21:00 0.72 · high 3.22 · good 29.70 · good Poor
Sun 22:00 0.74 · high 3.10 · good 29.60 · good Poor
Sun 23:00 0.74 · high 2.80 · good 29.60 · good Poor
Mon 00:00 0.76 · high 2.48 · good 29.60 · good Poor
Mon 01:00 0.76 · high 1.87 · good 29.50 · good Poor
Mon 02:00 0.78 · high 2.74 · good 29.50 · good Poor
Mon 03:00 0.76 · high 2.97 · good 29.50 · good Poor
Mon 04:00 0.78 · high 3.14 · good 29.40 · good Poor
Mon 05:00 0.78 · high 3.30 · good 29.40 · good Poor
Mon 06:00 0.80 · high 2.89 · good 29.40 · good Poor
Mon 07:00 0.82 · high 2.78 · good 29.30 · good Poor
Mon 08:00 0.82 · high 3.85 · good 29.30 · good Poor
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