MARINE REPORT / 72 HOURS

Ishigaki Snorkel Report Today

Japan · Updated Wed 03:49 (JST) · Source: Snapshot

The skinny

Marginal Data updated Wed 03:49 (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 04:00 (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

27.0°C

Max air

25.4°C

Sky

Partly cloudy

46% 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

Sat 04:00 – Tue 04:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.47 around Sat 09:00; 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 0.78m to 1.3m).

Wind is at or below 5.4m/s in 21/24 sampled hours (range 3.0 to 6.03m/s).

Tides range from 0.31m to 1.87m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
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
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
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
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
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 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
Sat 07:00 1.22 · high 4.05 · good 28.60 · good Poor
Sat 08:00 1.18 · high 4.59 · good 28.60 · good Poor
Sat 09:00 1.16 · high 5.09 · good 28.60 · good Fair
Sat 10:00 1.14 · high 5.22 · good 28.60 · good Fair
Sat 11:00 1.12 · high 5.66 · high 28.60 · good Poor
Sat 12:00 1.10 · high 6.03 · high 28.70 · good Poor
Sat 13:00 1.08 · high 5.68 · high 28.70 · good Fair
Sat 14:00 1.06 · high 5.06 · good 28.70 · good Fair
Sat 15:00 1.04 · high 5.08 · good 28.70 · good Fair
Sat 16:00 1.04 · high 5.38 · good 28.70 · good Poor
Sat 17:00 1.04 · high 5.32 · good 28.70 · good Poor
Sat 18:00 1.04 · high 5.22 · good 28.70 · good Fair
Sat 19:00 1.04 · high 4.94 · good 28.60 · good Poor
Sat 20:00 0.86 · high 4.15 · good 28.60 · good Poor
Sat 21:00 0.84 · high 3.88 · good 28.60 · good Poor
Sat 22:00 0.84 · high 3.62 · good 28.50 · good Poor
Sat 23:00 0.82 · high 3.27 · good 28.50 · good Poor
Sun 00:00 0.82 · high 3.00 · good 28.50 · good Poor
Sun 01:00 0.80 · high 4.04 · good 28.40 · good Poor
Sun 02:00 0.80 · high 3.66 · good 28.40 · good Poor
Sun 03:00 0.78 · high 3.40 · good 28.40 · good Poor
Sun 04:00 0.76 · high 3.23 · good 28.30 · good Poor
Sun 05:00 0.76 · high 3.42 · good 28.30 · good Poor
Sun 06:00 0.74 · high 3.57 · good 28.30 · good Poor
Sun 07:00 0.74 · high 3.62 · good 28.30 · good Poor
Sun 08:00 0.74 · high 4.03 · good 28.30 · good Poor
Sun 09:00 0.74 · high 4.07 · good 28.30 · good Fair
Sun 10:00 0.74 · high 3.73 · good 28.30 · good Fair
Sun 11:00 0.74 · high 3.62 · good 28.40 · good Fair
Sun 12:00 0.74 · high 4.46 · good 28.40 · good Fair
Sun 13:00 0.76 · high 5.25 · good 28.50 · good Fair
Sun 14:00 0.76 · high 5.24 · good 28.60 · good Poor
Sun 15:00 0.78 · high 4.30 · good 28.60 · good Poor
Sun 16:00 0.82 · high 4.50 · good 28.60 · good Fair
Sun 17:00 0.84 · high 4.54 · good 28.70 · good Fair
Sun 18:00 0.88 · high 4.73 · good 28.70 · good Fair
Sun 19:00 0.90 · high 4.59 · good 28.60 · good Poor
Sun 20:00 0.88 · high 4.75 · good 28.60 · good Poor
Sun 21:00 0.90 · high 4.93 · good 28.60 · good Poor
Sun 22:00 0.92 · high 4.81 · good 28.60 · good Poor
Sun 23:00 0.92 · high 4.74 · good 28.50 · good Poor
Mon 00:00 0.94 · high 4.32 · good 28.50 · good Poor
Mon 01:00 0.90 · high 3.28 · good 28.50 · good Poor
Mon 02:00 0.90 · high 2.80 · good 28.50 · good Poor
Mon 03:00 0.88 · high 2.61 · good 28.50 · good Poor
Mon 04:00 0.88 · high 2.76 · good 28.50 · good Poor
Mon 05:00 0.88 · high 3.54 · good 28.40 · good Poor
Mon 06:00 0.88 · high 3.77 · good 28.40 · good Poor
Mon 07:00 0.88 · high 4.15 · good 28.40 · good Poor
Mon 08:00 0.86 · high 4.69 · good 28.40 · good Poor
Mon 09:00 0.86 · high 3.18 · good 28.40 · good Fair
Mon 10:00 0.86 · high 2.98 · good 28.50 · good Fair
Mon 11:00 0.84 · high 2.93 · good 28.50 · good Fair
Mon 12:00 0.84 · high 2.93 · good 28.60 · good Fair
Mon 13:00 0.84 · high 2.84 · good 28.60 · good Fair
Mon 14:00 0.84 · high 2.91 · good 28.70 · good Fair
Mon 15:00 0.84 · high 3.38 · good 28.70 · good Fair
Mon 16:00 0.84 · high 3.98 · good 28.70 · good Poor
Mon 17:00 0.84 · high 3.87 · good 28.70 · good Fair
Mon 18:00 0.84 · high 3.70 · good 28.70 · good Fair
Mon 19:00 0.82 · high 3.55 · good 28.60 · good Poor
Mon 20:00 0.82 · high 3.50 · good 28.60 · good Poor
Mon 21:00 0.82 · high 3.25 · good 28.50 · good Poor
Mon 22:00 0.82 · high 2.87 · good 28.50 · good Poor
Mon 23:00 0.80 · high 2.53 · good 28.40 · good Poor
Tue 00:00 0.80 · high 2.10 · good 28.40 · good Poor
Tue 01:00 0.86 · high 1.91 · good 28.40 · good Poor
Tue 02:00 0.84 · high 1.88 · good 28.30 · good Poor
Tue 03:00 0.84 · high 1.98 · good 28.30 · good Poor