MARINE REPORT / 72 HOURS

Ishigaki Snorkel Report Today

Japan · Updated Wed 13:11 (JST) · Source: Snapshot

The skinny

Marginal Data updated Wed 13:11 (JST)

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

Right now (forecast)

Poor · 2.8/10

Wed 15:00 (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 6.6 m/s.

Email me when it is good

Sunrise

06:47

Sunset

18:06

Water

27.1°C

Max air

24.5°C

Sky

Partly cloudy

45% 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 (69 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

Wed 19:00, Thu 09:00, Thu 20:00, Fri 10:00, Fri 21:00, Sat 11:00

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

Tue 15:00 – Fri 15:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.65 around Tue 17:00; 10 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.

4/24 sampled hours stay at or below 0.36m (range 0.36m to 0.48m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.94 to 2.72m/s).

Tides range from 0.17m to 1.93m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Fair ⚠️ Fair
Fair ⚠️ Fair
Good 🌟 Good
Good 🌟 Good
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
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
Good 🌟 Good
Good 🌟 Good
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Good 🌟 Good
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 15:00 0.48 · high 2.50 · good 29.80 · good Fair
Tue 16:00 0.48 · high 2.23 · good 29.80 · good Fair
Tue 17:00 0.48 · high 2.72 · good 29.80 · good Good
Tue 18:00 0.48 · high 2.68 · good 29.70 · good Good
Tue 19:00 0.48 · high 2.27 · good 29.70 · good Poor
Tue 20:00 0.46 · high 1.86 · good 29.70 · good Poor
Tue 21:00 0.44 · high 1.97 · good 29.50 · good Poor
Tue 22:00 0.44 · high 1.64 · good 29.50 · good Poor
Tue 23:00 0.44 · high 1.35 · good 29.50 · good Poor
Wed 00:00 0.42 · high 1.34 · good 29.40 · good Poor
Wed 01:00 0.42 · high 1.45 · good 29.40 · good Poor
Wed 02:00 0.42 · high 1.32 · good 29.40 · good Poor
Wed 03:00 0.42 · high 1.26 · good 29.40 · good Poor
Wed 04:00 0.42 · high 1.46 · good 29.30 · good Poor
Wed 05:00 0.40 · high 1.45 · good 29.30 · good Poor
Wed 06:00 0.40 · high 1.35 · good 29.30 · good Poor
Wed 07:00 0.40 · high 1.20 · good 29.30 · good Poor
Wed 08:00 0.38 · high 1.70 · good 29.30 · good Poor
Wed 09:00 0.38 · high 1.62 · good 29.30 · good Good
Wed 10:00 0.38 · high 1.31 · good 29.30 · good Good
Wed 11:00 0.36 · good 0.96 · good 29.40 · good Good
Wed 12:00 0.36 · good 0.94 · good 29.60 · good Good
Wed 13:00 0.36 · good 1.26 · good 29.70 · good Good
Wed 14:00 0.36 · good 1.15 · good 29.80 · good Good
Wed 15:00 0.36 · good 0.51 · good 29.80 · good Good
Wed 16:00 0.36 · good 0.85 · good 29.80 · good Good
Wed 17:00 0.36 · good 1.66 · good 29.80 · good Good
Wed 18:00 0.36 · good 2.25 · good 29.80 · good Good
Wed 19:00 0.36 · good 2.17 · good 29.70 · good Poor
Wed 20:00 0.36 · good 1.92 · good 29.70 · good Poor
Wed 21:00 0.36 · good 1.46 · good 29.60 · good Poor
Wed 22:00 0.36 · good 1.20 · good 29.60 · good Poor
Wed 23:00 0.36 · good 1.31 · good 29.60 · good Poor
Thu 00:00 0.36 · good 1.40 · good 29.50 · good Poor
Thu 01:00 0.36 · good 1.26 · good 29.50 · good Poor
Thu 02:00 0.36 · good 1.17 · good 29.50 · good Poor
Thu 03:00 0.36 · good 1.10 · good 29.50 · good Poor
Thu 04:00 0.36 · good 1.12 · good 29.50 · good Poor
Thu 05:00 0.36 · good 0.90 · good 29.40 · good Poor
Thu 06:00 0.36 · good 0.35 · good 29.40 · good Poor
Thu 07:00 0.36 · good 0.10 · good 29.40 · good Poor
Thu 08:00 0.34 · good 0.59 · good 29.40 · good Poor
Thu 09:00 0.34 · good 0.87 · good 29.40 · good Good
Thu 10:00 0.34 · good 0.98 · good 29.50 · good Good
Thu 11:00 0.34 · good 1.60 · good 29.60 · good Good
Thu 12:00 0.34 · good 1.89 · good 29.70 · good Good
Thu 13:00 0.34 · good 2.10 · good 29.90 · good Good
Thu 14:00 0.34 · good 2.24 · good 30.00 · good Good
Thu 15:00 0.34 · good 2.38 · good 30.00 · good Good
Thu 16:00 0.34 · good 2.58 · good 30.00 · good Good
Thu 17:00 0.32 · good 2.80 · good 30.00 · good Good
Thu 18:00 0.32 · good 2.76 · good 30.00 · good Good
Thu 19:00 0.32 · good 2.19 · good 30.00 · good Poor
Thu 20:00 0.34 · good 1.67 · good 29.90 · good Poor
Thu 21:00 0.34 · good 1.60 · good 29.90 · good Poor
Thu 22:00 0.34 · good 1.07 · good 29.80 · good Poor
Thu 23:00 0.34 · good 0.40 · good 29.80 · good Poor
Fri 00:00 0.34 · good 0.10 · good 29.80 · good Poor
Fri 01:00 0.34 · good 0.11 · good 29.70 · good Poor
Fri 02:00 0.32 · good 0.21 · good 29.70 · good Poor
Fri 03:00 0.32 · good 1.32 · good 29.70 · good Poor
Fri 04:00 0.32 · good 1.70 · good 29.60 · good Poor
Fri 05:00 0.32 · good 1.42 · good 29.60 · good Poor
Fri 06:00 0.32 · good 1.61 · good 29.60 · good Poor
Fri 07:00 0.32 · good 2.19 · good 29.60 · good Poor
Fri 08:00 0.32 · good 2.73 · good 29.60 · good Poor
Fri 09:00 0.32 · good 2.58 · good 29.60 · good Good
Fri 10:00 0.32 · good 2.37 · good 29.60 · good Good
Fri 11:00 0.34 · good 2.76 · good 29.70 · good Fair
Fri 12:00 0.34 · good 4.14 · good 29.70 · good Fair
Fri 13:00 0.34 · good 2.80 · good 29.80 · good Fair
Fri 14:00 0.34 · good 1.77 · good 29.90 · good Good