SnorkelForecast.com

Ishigaki Snorkel Report Today

Japan · Updated Sat 09:26 (JST) · Source: Snapshot

The skinny

Marginal Report Sat 18:58

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

Score: 4.2/10

Best time: Tue 16:00

Main risk: Waves

No useful morning window is showing yet.

No useful afternoon window is showing yet.

Email me when it is good

Sunrise

06:28

Sunset

18:50

Water

29.3°C

Max air

28.1°C

Sky

Clear

10% 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

Saturday

❌ Poor conditions

Main blocker: Waves

Sunday

⚠️ Fair conditions

Main blocker: Waves

Monday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

  • Tue 07:00: Fair (0.46) · still limited by waves, tide/current
  • Tue 08:00: Fair (0.43) · still limited by waves, tide/current
  • Tue 05:00: Fair (0.42) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (71 hours)
  • Tide/current (71 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

Next early morning high tide: Sat 23:00

Sat 10:00, Sat 23:00, Sun 11:00, Sun 23:00, Mon 11:00, Tue 00:00

Nearby alternatives in Japan

Miyako

127 km away

❌ Poor

Kerama Islands

381 km away

✅ Good

Okinawa - Blue Cave

438 km away

✅ Good

Advanced forecast data

Viewing historical data

Thu 09:00 – Sun 09:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.36 around Thu 19:00; 1 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 1.1m to 1.46m).

Wind is at or below 5.4m/s in 1/24 sampled hours (range 5.23 to 7.15m/s).

Tides range from 0.69m to 1.48m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Poor ❌ Limited
Fair ⚠️ Fair
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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 09:00 1.10 · high 6.61 · high 30.40 · good Poor
Thu 10:00 1.14 · high 6.61 · high 30.30 · good Fair
Thu 11:00 1.16 · high 6.06 · high 30.30 · good Poor
Thu 12:00 1.28 · high 6.35 · high 30.10 · good Poor
Thu 13:00 1.32 · high 6.40 · high 30.00 · good Poor
Thu 14:00 1.34 · high 6.90 · high 30.00 · good Poor
Thu 15:00 1.38 · high 7.15 · high 30.00 · good Poor
Thu 16:00 1.40 · high 7.14 · high 29.90 · good Poor
Thu 17:00 1.44 · high 6.65 · high 29.90 · good Poor
Thu 18:00 1.46 · high 6.30 · high 29.90 · good Poor
Thu 19:00 1.46 · high 5.64 · high 29.80 · good Poor
Thu 20:00 1.16 · high 5.23 · good 29.80 · good Poor
Thu 21:00 1.16 · high 6.00 · high 29.80 · good Poor
Thu 22:00 1.16 · high 6.19 · high 29.80 · good Poor
Thu 23:00 1.18 · high 6.32 · high 29.80 · good Poor
Fri 00:00 1.18 · high 6.40 · high 29.80 · good Poor
Fri 01:00 1.20 · high 6.35 · high 29.80 · good Poor
Fri 02:00 1.20 · high 6.25 · high 29.80 · good Poor
Fri 03:00 1.22 · high 6.20 · high 29.90 · good Poor
Fri 04:00 1.24 · high 6.43 · high 29.90 · good Poor
Fri 05:00 1.24 · high 6.82 · high 30.00 · good Poor
Fri 06:00 1.26 · high 7.06 · high 30.00 · good Poor
Fri 07:00 1.28 · high 6.94 · high 30.00 · good Poor
Fri 08:00 1.32 · high 6.68 · high 30.00 · good Poor
Fri 09:00 1.34 · high 6.58 · high 29.90 · good Poor
Fri 10:00 1.38 · high 6.80 · high 29.90 · good Poor
Fri 11:00 1.40 · high 2.91 · good 30.00 · good Poor
Fri 12:00 1.44 · high 2.94 · good 30.00 · good Poor
Fri 13:00 1.42 · high 3.58 · good 30.00 · good Poor
Fri 14:00 1.40 · high 5.07 · good 29.90 · good Poor
Fri 15:00 1.38 · high 6.25 · high 29.90 · good Poor
Fri 16:00 1.38 · high 3.97 · good 29.90 · good Poor
Fri 17:00 1.40 · high 7.14 · high 29.80 · good Poor
Fri 18:00 1.40 · high 5.10 · good 29.80 · good Poor
Fri 19:00 1.42 · high 6.47 · high 29.80 · good Poor
Fri 20:00 1.42 · high 7.42 · high 29.80 · good Poor
Fri 21:00 1.44 · high 7.34 · high 29.80 · good Poor
Fri 22:00 1.44 · high 7.38 · high 29.70 · good Poor
Fri 23:00 1.42 · high 8.43 · high 29.70 · good Poor
Sat 00:00 1.42 · high 7.74 · high 29.70 · good Poor
Sat 01:00 1.44 · high 8.62 · high 29.70 · good Poor
Sat 02:00 1.48 · high 8.69 · high 29.70 · good Poor
Sat 03:00 1.50 · high 10.14 · high 29.80 · good Poor
Sat 04:00 1.66 · high 10.98 · high 29.80 · good Poor
Sat 05:00 1.84 · high 11.79 · high 29.80 · good Poor
Sat 06:00 2.00 · high 10.16 · high 29.80 · good Poor
Sat 07:00 1.98 · high 10.73 · high 29.80 · good Poor
Sat 08:00 1.98 · high 10.94 · high 29.80 · good Poor
Sat 09:00 1.96 · high 11.22 · high 29.70 · good Poor
Sat 10:00 1.96 · high 10.88 · high 29.70 · good Poor
Sat 11:00 2.22 · high 9.65 · high 29.70 · good Poor
Sat 12:00 2.16 · high 10.77 · high 29.60 · good Poor
Sat 13:00 2.16 · high 8.86 · high 29.60 · good Poor
Sat 14:00 2.18 · high 10.29 · high 29.60 · good Poor
Sat 15:00 2.18 · high 11.09 · high 29.50 · good Poor
Sat 16:00 2.16 · high 10.65 · high 29.50 · good Poor
Sat 17:00 2.14 · high 9.43 · high 29.50 · good Poor
Sat 18:00 2.12 · high 9.34 · high 29.40 · good Poor
Sat 19:00 1.98 · high 9.38 · high 29.40 · good Poor
Sat 20:00 1.96 · high 10.14 · high 29.40 · good Poor
Sat 21:00 1.96 · high 9.18 · high 29.30 · good Poor
Sat 22:00 1.92 · high 9.33 · high 29.30 · good Poor
Sat 23:00 1.90 · high 7.75 · high 29.30 · good Poor
Sun 00:00 1.86 · high 7.19 · high 29.20 · good Poor
Sun 01:00 1.92 · high 8.15 · high 29.20 · good Poor
Sun 02:00 1.96 · high 7.93 · high 29.20 · good Poor
Sun 03:00 2.02 · high 7.90 · high 29.10 · good Poor
Sun 04:00 2.00 · high 9.27 · high 29.10 · good Poor
Sun 05:00 1.98 · high 9.27 · high 29.10 · good Poor
Sun 06:00 1.96 · high 9.00 · high 29.10 · good Poor
Sun 07:00 1.96 · high 8.66 · high 29.00 · good Poor
Sun 08:00 1.94 · high 9.65 · high 29.00 · good Poor