SnorkelForecast.com

Ishigaki Snorkel Report Today

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

The skinny

Marginal Report Sat 05:31

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

18:51

Water

28.9°C

Max air

29.5°C

Sky

Cloudy

100% 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 (71 hours)
  • Tide/current (71 hours)
  • Darkness (41 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: Fri 22:00

Fri 22:00, 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 current forecast

Fri 20:00 – Mon 20:00 (JST)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.45 around Sat 15:00; 8 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 0.76m to 0.8m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.79 to 4.91m/s).

Tides range from 0.21m to 1.86m; 2 of 24 hours are in or near peak slack windows.

72-hour forecast overview
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
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
Poor ❌ Limited
Poor ❌ Limited
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
Poor ❌ Limited
Poor ❌ Limited
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
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
Fri 21:00 0.80 · high 0.79 · good 28.90 · good Poor
Fri 22:00 0.80 · high 3.79 · good 28.90 · good Poor
Fri 23:00 0.78 · high 2.67 · good 28.90 · good Poor
Sat 00:00 0.78 · high 4.25 · good 28.90 · good Poor
Sat 01:00 0.78 · high 3.67 · good 29.00 · good Poor
Sat 02:00 0.76 · high 2.78 · good 29.10 · good Fair
Sat 03:00 0.76 · high 3.14 · good 29.20 · good Fair
Sat 04:00 0.76 · high 3.42 · good 29.30 · good Fair
Sat 05:00 0.76 · high 3.18 · good 29.40 · good Fair
Sat 06:00 0.76 · high 3.35 · good 29.40 · good Fair
Sat 07:00 0.76 · high 3.71 · good 29.40 · good Fair
Sat 08:00 0.76 · high 2.81 · good 29.40 · good Fair
Sat 09:00 0.76 · high 3.46 · good 29.40 · good Fair
Sat 10:00 0.76 · high 3.48 · good 29.30 · good Poor
Sat 11:00 0.76 · high 3.70 · good 29.30 · good Poor
Sat 12:00 0.76 · high 4.31 · good 29.30 · good Poor
Sat 13:00 0.76 · high 4.67 · good 29.30 · good Poor
Sat 14:00 0.78 · high 4.70 · good 29.20 · good Poor
Sat 15:00 0.78 · high 4.91 · good 29.20 · good Poor
Sat 16:00 0.78 · high 4.24 · good 29.20 · good Poor
Sat 17:00 0.80 · high 4.23 · good 29.20 · good Poor
Sat 18:00 0.80 · high 3.89 · good 29.20 · good Poor
Sat 19:00 0.80 · high 3.45 · good 29.20 · good Poor
Sat 20:00 0.78 · high 3.76 · good 29.10 · good Poor
Sat 21:00 0.78 · high 3.82 · good 29.10 · good Poor
Sat 22:00 0.78 · high 3.95 · good 29.10 · good Poor
Sat 23:00 0.80 · high 4.33 · good 29.10 · good Poor
Sun 00:00 0.80 · high 4.59 · good 29.10 · good Fair
Sun 01:00 0.82 · high 5.27 · good 29.20 · good Fair
Sun 02:00 0.84 · high 5.59 · high 29.20 · good Fair
Sun 03:00 0.86 · high 5.52 · high 29.30 · good Poor
Sun 04:00 0.88 · high 5.49 · high 29.40 · good Poor
Sun 05:00 0.88 · high 5.69 · high 29.40 · good Fair
Sun 06:00 0.90 · high 5.94 · high 29.50 · good Poor
Sun 07:00 0.94 · high 6.46 · high 29.50 · good Fair
Sun 08:00 0.96 · high 6.59 · high 29.50 · good Fair
Sun 09:00 1.00 · high 6.40 · high 29.50 · good Fair
Sun 10:00 1.02 · high 6.27 · high 29.50 · good Poor
Sun 11:00 1.04 · high 6.47 · high 29.40 · good Poor
Sun 12:00 1.06 · high 6.54 · high 29.40 · good Poor
Sun 13:00 1.06 · high 6.19 · high 29.40 · good Poor
Sun 14:00 1.08 · high 6.07 · high 29.40 · good Poor
Sun 15:00 1.08 · high 5.95 · high 29.30 · good Poor
Sun 16:00 1.10 · high 5.22 · good 29.30 · good Poor
Sun 17:00 1.10 · high 4.46 · good 29.30 · good Poor
Sun 18:00 1.12 · high 4.91 · good 29.20 · good Poor
Sun 19:00 1.12 · high 5.72 · high 29.20 · good Poor
Sun 20:00 1.10 · high 5.58 · high 29.20 · good Poor
Sun 21:00 1.10 · high 2.90 · good 29.20 · good Poor
Sun 22:00 1.08 · high 3.25 · good 29.20 · good Poor
Sun 23:00 1.06 · high 4.92 · good 29.20 · good Poor
Mon 00:00 1.04 · high 3.69 · good 29.20 · good Fair
Mon 01:00 1.04 · high 4.43 · good 29.20 · good Fair
Mon 02:00 1.02 · high 4.11 · good 29.30 · good Fair
Mon 03:00 1.02 · high 3.79 · good 29.30 · good Poor
Mon 04:00 1.02 · high 4.63 · good 29.40 · good Poor
Mon 05:00 1.02 · high 4.83 · good 29.40 · good Poor
Mon 06:00 1.02 · high 5.40 · good 29.50 · good Poor
Mon 07:00 1.02 · high 5.00 · good 29.50 · good Fair
Mon 08:00 1.02 · high 4.74 · good 29.50 · good Fair
Mon 09:00 1.02 · high 5.05 · good 29.50 · good Fair
Mon 10:00 1.02 · high 4.94 · good 29.50 · good Poor
Mon 11:00 1.04 · high 4.92 · good 29.40 · good Poor
Mon 12:00 1.04 · high 4.84 · good 29.40 · good Poor
Mon 13:00 1.04 · high 4.98 · good 29.40 · good Poor
Mon 14:00 1.04 · high 4.87 · good 29.40 · good Poor
Mon 15:00 1.04 · high 4.68 · good 29.40 · good Poor
Mon 16:00 1.04 · high 4.04 · good 29.30 · good Poor
Mon 17:00 1.02 · high 4.05 · good 29.30 · good Poor
Mon 18:00 1.02 · high 4.10 · good 29.30 · good Poor
Mon 19:00 1.00 · high 4.55 · good 29.20 · good Poor