SnorkelForecast.com

Ishigaki Snorkel Report Today

Japan · Updated Sat 12:58 (JST) · Source: Snapshot

The skinny

Marginal Report Sat 21:59

Ishigaki looks marginal today. The least-bad daylight window is around Tue 17:00, but waves is limiting the forecast.

Score: 3.9/10

Best time: Tue 17:00

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

28.3°C

Sky

Clear

4% 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 08:00: Fair (0.43) · still limited by waves, wind
  • Tue 04:00: Fair (0.42) · still limited by waves, tide/current
  • Tue 00:00: Fair (0.41) · 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: Sat 23:00

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

Sun 12:00 – Wed 12:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.43 around Mon 09:00; 6 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 0.78m to 0.92m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.63 to 5.36m/s).

Tides range from 0.51m to 1.78m; 1 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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
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 12:00 0.90 · high 3.20 · good 30.50 · out of range Poor
Sun 13:00 0.90 · high 3.30 · good 30.40 · good Poor
Sun 14:00 0.90 · high 3.46 · good 30.40 · good Poor
Sun 15:00 0.90 · high 2.75 · good 30.40 · good Poor
Sun 16:00 0.90 · high 1.55 · good 30.30 · good Poor
Sun 17:00 0.92 · high 1.23 · good 30.30 · good Poor
Sun 18:00 0.92 · high 1.03 · good 30.30 · good Poor
Sun 19:00 0.92 · high 0.63 · good 30.20 · good Poor
Sun 20:00 0.92 · high 1.26 · good 30.20 · good Poor
Sun 21:00 0.92 · high 1.74 · good 30.20 · good Poor
Sun 22:00 0.92 · high 2.58 · good 30.20 · good Poor
Sun 23:00 0.90 · high 2.77 · good 30.20 · good Poor
Mon 00:00 0.86 · high 2.77 · good 30.20 · good Fair
Mon 01:00 0.86 · high 3.28 · good 30.20 · good Fair
Mon 02:00 0.84 · high 3.32 · good 30.30 · good Fair
Mon 03:00 0.84 · high 3.54 · good 30.40 · good Fair
Mon 04:00 0.82 · high 3.86 · good 30.40 · good Fair
Mon 05:00 0.82 · high 3.90 · good 30.50 · out of range Poor
Mon 06:00 0.80 · high 4.67 · good 30.50 · out of range Fair
Mon 07:00 0.80 · high 5.27 · good 30.50 · out of range Poor
Mon 08:00 0.78 · high 5.36 · good 30.50 · out of range Poor
Mon 09:00 0.78 · high 5.26 · good 30.50 · out of range Poor
Mon 10:00 0.78 · high 5.06 · good 30.50 · out of range Poor
Mon 11:00 0.84 · high 4.39 · good 30.50 · out of range Poor
Mon 12:00 0.86 · high 5.21 · good 30.50 · out of range Poor
Mon 13:00 0.86 · high 5.67 · high 30.40 · good Poor
Mon 14:00 0.88 · high 5.44 · high 30.40 · good Poor
Mon 15:00 0.88 · high 5.08 · good 30.30 · good Poor
Mon 16:00 0.88 · high 5.06 · good 30.30 · good Poor
Mon 17:00 0.88 · high 4.45 · good 30.20 · good Poor
Mon 18:00 0.88 · high 4.03 · good 30.20 · good Poor
Mon 19:00 0.88 · high 3.59 · good 30.10 · good Poor
Mon 20:00 0.88 · high 3.72 · good 30.10 · good Poor
Mon 21:00 0.88 · high 2.95 · good 30.10 · good Poor
Mon 22:00 0.88 · high 3.51 · good 30.10 · good Poor
Mon 23:00 0.90 · high 4.11 · good 30.10 · good Poor
Tue 00:00 0.90 · high 5.81 · high 30.10 · good Poor
Tue 01:00 0.92 · high 5.14 · good 30.10 · good Fair
Tue 02:00 0.96 · high 5.66 · high 30.20 · good Fair
Tue 03:00 0.98 · high 6.06 · high 30.20 · good Fair
Tue 04:00 1.00 · high 5.74 · high 30.30 · good Poor
Tue 05:00 1.00 · high 6.48 · high 30.30 · good Fair
Tue 06:00 1.02 · high 6.36 · high 30.40 · good Fair
Tue 07:00 1.04 · high 6.16 · high 30.40 · good Fair
Tue 08:00 1.04 · high 6.33 · high 30.40 · good Fair
Tue 09:00 1.06 · high 6.10 · high 30.30 · good Fair
Tue 10:00 1.06 · high 5.58 · high 30.30 · good Poor
Tue 11:00 0.98 · high 5.66 · high 30.10 · good Poor
Tue 12:00 0.98 · high 6.09 · high 30.00 · good Poor
Tue 13:00 0.98 · high 5.69 · high 30.00 · good Poor
Tue 14:00 0.96 · high 4.77 · good 30.00 · good Poor
Tue 15:00 0.96 · high 4.57 · good 29.90 · good Poor
Tue 16:00 0.94 · high 4.53 · good 29.90 · good Poor
Tue 17:00 0.92 · high 4.12 · good 29.90 · good Poor
Tue 18:00 0.90 · high 4.03 · good 29.80 · good Poor
Tue 19:00 0.90 · high 5.08 · good 29.80 · good Poor
Tue 20:00 0.94 · high 3.40 · good 29.80 · good Poor
Tue 21:00 0.92 · high 3.46 · good 29.70 · good Poor
Tue 22:00 0.90 · high 4.50 · good 29.70 · good Poor
Tue 23:00 0.90 · high 2.70 · good 29.70 · good Poor
Wed 00:00 0.88 · high 3.87 · good 29.70 · good Fair
Wed 01:00 0.88 · high 3.48 · good 29.80 · good Fair
Wed 02:00 0.86 · high 3.37 · good 29.90 · good Fair
Wed 03:00 0.86 · high 3.37 · good 29.90 · good Fair
Wed 04:00 0.86 · high 3.10 · good 30.00 · good Fair
Wed 05:00 0.84 · high 3.21 · good 30.10 · good Fair
Wed 06:00 0.84 · high 3.41 · good 30.20 · good Fair
Wed 07:00 0.84 · high 5.24 · good 30.20 · good Poor
Wed 08:00 0.82 · high 5.23 · good 30.20 · good Poor
Wed 09:00 0.82 · high 5.36 · good 30.20 · good Poor
Wed 10:00 0.82 · high 4.96 · good 30.20 · good Fair
Wed 11:00 0.94 · high 4.60 · good 30.10 · good Poor