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 · 2.5/10

Wed 13:00 (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 7.4 m/s.

Email me when it is good

Sunrise

06:47

Sunset

18:06

Water

27.1°C

Max air

25.1°C

Sky

Cloudy

82% 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 (71 hours)
  • Tide/current (70 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

Thu 13:00 – Sun 13:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.72 around Thu 18:00; 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.

24/24 sampled hours stay at or below 0.36m (range 0.32m to 0.34m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.1 to 4.14m/s).

Tides range from 0.32m to 1.83m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
Fair ⚠️ Fair
Fair ⚠️ Fair
Good 🌟 Good
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
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
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
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
Fri 15:00 0.34 · good 3.99 · good 29.90 · good Fair
Fri 16:00 0.36 · good 2.83 · good 29.90 · good Fair
Fri 17:00 0.36 · good 2.98 · good 29.80 · good Good
Fri 18:00 0.38 · high 4.43 · good 29.80 · good Fair
Fri 19:00 0.42 · high 4.38 · good 29.70 · good Poor
Fri 20:00 0.48 · high 3.62 · good 29.70 · good Poor
Fri 21:00 0.50 · high 4.15 · good 29.70 · good Poor
Fri 22:00 0.52 · high 4.95 · good 29.60 · good Poor
Fri 23:00 0.54 · high 2.79 · good 29.60 · good Poor
Sat 00:00 0.56 · high 4.29 · good 29.60 · good Poor
Sat 01:00 0.58 · high 4.27 · good 29.50 · good Poor
Sat 02:00 0.58 · high 4.02 · good 29.50 · good Poor
Sat 03:00 0.70 · high 4.19 · good 29.50 · good Poor
Sat 04:00 0.72 · high 4.52 · good 29.50 · good Poor
Sat 05:00 0.74 · high 3.26 · good 29.40 · good Poor
Sat 06:00 0.76 · high 2.55 · good 29.40 · good Poor
Sat 07:00 0.78 · high 2.76 · good 29.40 · good Poor
Sat 08:00 0.78 · high 4.60 · good 29.40 · good Poor
Sat 09:00 0.80 · high 4.73 · good 29.40 · good Fair
Sat 10:00 0.82 · high 5.30 · good 29.50 · good Fair
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