SnorkelForecast.com

Ishigaki Snorkel Report Today

Japan · Updated Fri 20:16 (JST) · Source: Snapshot

The skinny

Marginal Report Sat 08:22

Ishigaki looks marginal today. The least-bad daylight window is around Sat 15:00, but waves is limiting the forecast.

Score: 4.5/10

Best time: Sat 15:00

Main risk: Waves

Best morning signal: Sat 11:00 (Fair).

Best afternoon signal: Sat 15:00 (Fair). Peak afternoon wind is about 3.7 m/s.

Email me when it is good

Sunrise

06:28

Sunset

18:50

Water

28.9°C

Max air

29.5°C

Sky

Cloudy

95% 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

⚠️ Fair conditions

Main blocker: Waves

Sunday

⚠️ Fair conditions

Main blocker: Waves

Monday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

  • Sat 06:00: Fair (0.45) · still limited by waves, tide/current
  • Sat 05:00: Fair (0.45) · still limited by waves, tide/current
  • Sat 08:00: Fair (0.44) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (68 hours)
  • Tide/current (68 hours)
  • Darkness (38 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

Nearby alternatives in Japan

Miyako

127 km away

❌ Poor

Kerama Islands

381 km away

❌ Poor

Okinawa - Blue Cave

438 km away

✅ Good

Advanced forecast data

Viewing historical data

Thu 23:00 – Sun 23:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.36 around Fri 13:00; 2 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 1.22m to 1.5m).

Wind is at or below 5.4m/s in 19/24 sampled hours (range 2.31 to 6.97m/s).

Tides range from 0.49m to 1.58m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
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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 23:00 1.50 · high 4.20 · good 28.80 · good Poor
Fri 00:00 1.50 · high 3.11 · good 28.80 · good Poor
Fri 01:00 1.50 · high 4.51 · good 28.80 · good Poor
Fri 02:00 1.50 · high 2.66 · good 28.80 · good Fair
Fri 03:00 1.50 · high 3.38 · good 28.90 · good Poor
Fri 04:00 1.50 · high 2.31 · good 28.90 · good Fair
Fri 05:00 1.50 · high 2.94 · good 28.90 · good Poor
Fri 06:00 1.50 · high 4.23 · good 28.90 · good Poor
Fri 07:00 1.48 · high 4.67 · good 28.90 · good Poor
Fri 08:00 1.48 · high 4.65 · good 28.90 · good Poor
Fri 09:00 1.46 · high 4.11 · good 28.90 · good Poor
Fri 10:00 1.46 · high 4.37 · good 28.90 · good Poor
Fri 11:00 1.32 · high 4.55 · good 29.60 · good Poor
Fri 12:00 1.30 · high 4.51 · good 29.60 · good Poor
Fri 13:00 1.28 · high 4.44 · good 29.60 · good Poor
Fri 14:00 1.26 · high 4.17 · good 29.50 · good Poor
Fri 15:00 1.24 · high 4.12 · good 29.50 · good Poor
Fri 16:00 1.24 · high 4.30 · good 29.50 · good Poor
Fri 17:00 1.24 · high 5.00 · good 29.40 · good Poor
Fri 18:00 1.24 · high 5.62 · high 29.40 · good Poor
Fri 19:00 1.24 · high 5.47 · high 29.40 · good Poor
Fri 20:00 1.22 · high 6.62 · high 29.40 · good Poor
Fri 21:00 1.22 · high 6.79 · high 29.40 · good Poor
Fri 22:00 1.26 · high 6.97 · high 29.40 · good Poor
Fri 23:00 1.30 · high 7.00 · high 29.40 · good Poor
Sat 00:00 1.34 · high 6.91 · high 29.40 · good Fair
Sat 01:00 1.40 · high 7.18 · high 29.40 · good Poor
Sat 02:00 1.44 · high 7.71 · high 29.40 · good Poor
Sat 03:00 1.50 · high 8.33 · high 29.40 · good Poor
Sat 04:00 1.54 · high 9.26 · high 29.40 · good Poor
Sat 05:00 1.58 · high 8.90 · high 29.40 · good Poor
Sat 06:00 1.62 · high 9.70 · high 29.40 · good Fair
Sat 07:00 1.62 · high 9.97 · high 29.40 · good Poor
Sat 08:00 1.64 · high 9.17 · high 29.30 · good Poor
Sat 09:00 1.64 · high 8.14 · high 29.30 · good Poor
Sat 10:00 1.62 · high 8.06 · high 29.30 · good Poor
Sat 11:00 1.50 · high 6.69 · high 29.40 · good Poor
Sat 12:00 1.48 · high 7.20 · high 29.40 · good Poor
Sat 13:00 1.46 · high 8.99 · high 29.40 · good Poor
Sat 14:00 1.46 · high 9.48 · high 29.30 · good Poor
Sat 15:00 1.44 · high 9.63 · high 29.30 · good Poor
Sat 16:00 1.46 · high 9.34 · high 29.30 · good Poor
Sat 17:00 1.48 · high 9.51 · high 29.30 · good Poor
Sat 18:00 1.50 · high 9.00 · high 29.20 · good Poor
Sat 19:00 1.52 · high 8.35 · high 29.20 · good Poor
Sat 20:00 1.56 · high 9.31 · high 29.20 · good Poor
Sat 21:00 1.56 · high 9.39 · high 29.10 · good Poor
Sat 22:00 1.58 · high 9.12 · high 29.10 · good Poor
Sat 23:00 1.58 · high 11.11 · high 29.10 · good Poor
Sun 00:00 1.60 · high 9.45 · high 29.10 · good Poor
Sun 01:00 1.60 · high 9.74 · high 29.10 · good Poor
Sun 02:00 1.58 · high 9.42 · high 29.10 · good Poor
Sun 03:00 1.58 · high 9.45 · high 29.20 · good Poor
Sun 04:00 1.58 · high 8.71 · high 29.20 · good Poor
Sun 05:00 1.60 · high 9.10 · high 29.30 · good Poor
Sun 06:00 1.60 · high 9.17 · high 29.30 · good Poor
Sun 07:00 1.58 · high 9.33 · high 29.30 · good Poor
Sun 08:00 1.56 · high 10.03 · high 29.30 · good Poor
Sun 09:00 1.54 · high 8.76 · high 29.20 · good Poor
Sun 10:00 1.52 · high 8.45 · high 29.20 · good Poor
Sun 11:00 1.48 · high 7.98 · high 29.50 · good Poor
Sun 12:00 1.46 · high 8.03 · high 29.50 · good Poor
Sun 13:00 1.44 · high 7.27 · high 29.50 · good Poor
Sun 14:00 1.40 · high 6.89 · high 29.50 · good Poor
Sun 15:00 1.38 · high 6.53 · high 29.50 · good Poor
Sun 16:00 1.36 · high 6.40 · high 29.50 · good Poor
Sun 17:00 1.34 · high 6.44 · high 29.40 · good Poor
Sun 18:00 1.32 · high 6.62 · high 29.40 · good Poor
Sun 19:00 1.34 · high 6.51 · high 29.40 · good Poor
Sun 20:00 1.34 · high 7.80 · high 29.40 · good Poor
Sun 21:00 1.34 · high 7.36 · high 29.40 · good Poor
Sun 22:00 1.36 · high 7.36 · high 29.30 · good Poor