SnorkelForecast.com

Ishigaki Snorkel Report Today

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

The skinny

Marginal Report Sat 06:32

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

90% 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 (70 hours)
  • Tide/current (70 hours)
  • Darkness (40 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 historical data

Sun 21:00 – Wed 21:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.41 around Mon 15:00; 4 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 1.06m to 1.42m).

Wind is at or below 5.4m/s in 4/24 sampled hours (range 5.01 to 8.59m/s).

Tides range from 0.29m to 1.58m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
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
Fair ⚠️ Fair
Poor ❌ Limited
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
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
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
Sun 23:00 1.38 · high 7.77 · high 29.30 · good Poor
Mon 00:00 1.40 · high 7.68 · high 29.30 · good Poor
Mon 01:00 1.40 · high 7.97 · high 29.30 · good Poor
Mon 02:00 1.42 · high 8.40 · high 29.40 · good Poor
Mon 03:00 1.42 · high 8.44 · high 29.40 · good Poor
Mon 04:00 1.38 · high 8.24 · high 29.50 · good Poor
Mon 05:00 1.36 · high 7.82 · high 29.50 · good Fair
Mon 06:00 1.32 · high 7.47 · high 29.60 · good Fair
Mon 07:00 1.30 · high 8.59 · high 29.60 · good Fair
Mon 08:00 1.26 · high 8.59 · high 29.60 · good Fair
Mon 09:00 1.24 · high 8.34 · high 29.60 · good Poor
Mon 10:00 1.22 · high 7.56 · high 29.60 · good Poor
Mon 11:00 1.20 · high 7.30 · high 29.40 · good Poor
Mon 12:00 1.18 · high 6.69 · high 29.40 · good Poor
Mon 13:00 1.16 · high 6.71 · high 29.40 · good Poor
Mon 14:00 1.16 · high 6.39 · high 29.40 · good Poor
Mon 15:00 1.14 · high 5.87 · high 29.40 · good Poor
Mon 16:00 1.12 · high 5.49 · high 29.30 · good Poor
Mon 17:00 1.12 · high 5.30 · good 29.30 · good Poor
Mon 18:00 1.10 · high 5.01 · good 29.30 · good Poor
Mon 19:00 1.08 · high 5.24 · good 29.30 · good Poor
Mon 20:00 1.06 · high 5.40 · good 29.20 · good Poor
Mon 21:00 1.06 · high 5.99 · high 29.20 · good Poor
Mon 22:00 1.08 · high 6.24 · high 29.20 · good Poor
Mon 23:00 1.10 · high 5.95 · high 29.20 · good Poor
Tue 00:00 1.12 · high 6.34 · high 29.20 · good Fair
Tue 01:00 1.14 · high 6.49 · high 29.20 · good Fair
Tue 02:00 1.14 · high 6.43 · high 29.20 · good Fair
Tue 03:00 1.16 · high 6.47 · high 29.30 · good Fair
Tue 04:00 1.20 · high 6.47 · high 29.40 · good Fair
Tue 05:00 1.22 · high 6.37 · high 29.40 · good Fair
Tue 06:00 1.26 · high 6.72 · high 29.40 · good Fair
Tue 07:00 1.24 · high 6.55 · high 29.40 · good Fair
Tue 08:00 1.22 · high 6.12 · high 29.40 · good Fair
Tue 09:00 1.20 · high 5.41 · high 29.40 · good Fair
Tue 10:00 1.20 · high 5.02 · good 29.40 · good Poor
Tue 11:00 0.98 · high 4.84 · good 29.40 · good Poor
Tue 12:00 0.96 · high 3.56 · good 29.30 · good Poor
Tue 13:00 0.94 · high 3.50 · good 29.30 · good Poor
Tue 14:00 0.90 · high 3.40 · good 29.30 · good Poor
Tue 15:00 0.88 · high 3.00 · good 29.30 · good Poor
Tue 16:00 0.86 · high 2.70 · good 29.20 · good Poor
Tue 17:00 0.82 · high 2.71 · good 29.20 · good Poor
Tue 18:00 0.80 · high 2.36 · good 29.20 · good Poor
Tue 19:00 0.78 · high 1.55 · good 29.10 · good Poor
Tue 20:00 0.70 · high 2.01 · good 29.10 · good Poor
Tue 21:00 0.68 · high 2.06 · good 29.10 · good Poor
Tue 22:00 0.68 · high 2.16 · good 29.00 · good Poor
Tue 23:00 0.66 · high 2.58 · good 29.00 · good Poor
Wed 00:00 0.66 · high 3.32 · good 29.00 · good Fair
Wed 01:00 0.66 · high 3.51 · good 29.00 · good Fair
Wed 02:00 0.66 · high 3.91 · good 29.10 · good Fair
Wed 03:00 0.66 · high 4.55 · good 29.10 · good Fair
Wed 04:00 0.68 · high 5.03 · good 29.20 · good Poor
Wed 05:00 0.70 · high 5.55 · high 29.20 · good Fair
Wed 06:00 0.72 · high 5.92 · high 29.20 · good Fair
Wed 07:00 0.76 · high 4.74 · good 29.20 · good Fair
Wed 08:00 0.78 · high 5.15 · good 29.20 · good Fair
Wed 09:00 0.82 · high 5.29 · good 29.20 · good Fair
Wed 10:00 0.84 · high 5.02 · good 29.20 · good Poor
Wed 11:00 0.80 · high 4.96 · good 29.20 · good Poor
Wed 12:00 0.80 · high 4.61 · good 29.20 · good Poor
Wed 13:00 0.80 · high 4.35 · good 29.20 · good Poor
Wed 14:00 0.78 · high 4.08 · good 29.20 · good Poor
Wed 15:00 0.78 · high 3.73 · good 29.10 · good Poor
Wed 16:00 0.76 · high 3.58 · good 29.10 · good Poor
Wed 17:00 0.76 · high 3.55 · good 29.10 · good Poor
Wed 18:00 0.74 · high 3.72 · good 29.10 · good Poor
Wed 19:00 0.74 · high 5.01 · good 29.10 · good Poor
Wed 20:00 0.80 · high 4.81 · good 29.00 · good Poor