SnorkelForecast.com

Ishigaki Snorkel Report Today

Japan · Updated Mon 02:30 (JST) · Source: Snapshot · Showing fallback/stale data

The skinny

Go in the best window Report Tue 20:39

Ishigaki has a usable snorkeling window around Thu 10:00. The main thing to watch is waves.

Score: 5.2/10

Best time: Thu 10:00

Main risk: Waves

No useful morning window is showing yet.

No useful afternoon window is showing yet.

Email me when it is good

Sunrise

06:10

Sunset

19:29

Water

30.6°C

Max air

28.3°C

Sky

Partly cloudy

55% cloud

Good window is available today

Next safe window: Thu 01:00 (3% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Tuesday

❌ poor conditions

Main blocker: Waves

Wednesday

⚠️ fair conditions

Main blocker: Waves

Thursday

✅ good conditions

Main blocker: Waves

Best available hours

Next safe window starts at Thu 01:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (38 hours)
  • Tide/current (38 hours)
  • Darkness (25 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: Tue 21:00

Tue 21:00, Wed 10:00, Wed 22:00

Nearby alternatives in Japan

Miyako

127 km away

✅ Good

Kerama Islands

381 km away

✅ Good

Okinawa - Blue Cave

438 km away

✅ Good

Advanced forecast data

Viewing historical data

Fri 11:00 – Mon 11:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.46 around Sat 19:00; 11 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 1.32m to 1.8m).

Wind is at or below 5.4m/s in 1/24 sampled hours (range 5.08 to 7.44m/s).

Tides range from 0.52m to 1.54m; 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
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
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
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
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
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
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 and safety gate (outside daylight scores lower).
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Fri 11:00 1.32 · high 7.25 · high 30.50 · out of range poor
Fri 12:00 1.42 · high 7.33 · high 30.40 · good poor
Fri 13:00 1.52 · high 7.23 · high 30.40 · good poor
Fri 14:00 1.62 · high 7.18 · high 30.30 · good poor
Fri 15:00 1.72 · high 7.27 · high 30.20 · good poor
Fri 16:00 1.74 · high 7.06 · high 30.20 · good poor
Fri 17:00 1.78 · high 6.95 · high 30.10 · good poor
Fri 18:00 1.80 · high 6.84 · high 30.10 · good poor
Fri 19:00 1.78 · high 6.93 · high 30.00 · good poor
Fri 20:00 1.78 · high 7.07 · high 30.00 · good poor
Fri 21:00 1.76 · high 7.00 · high 29.90 · good poor
Fri 22:00 1.74 · high 7.28 · high 29.90 · good poor
Fri 23:00 1.72 · high 7.44 · high 29.90 · good poor
Sat 00:00 1.70 · high 7.42 · high 29.90 · good fair
Sat 01:00 1.66 · high 6.78 · high 29.90 · good fair
Sat 02:00 1.62 · high 6.85 · high 30.00 · good fair
Sat 03:00 1.58 · high 6.39 · high 30.00 · good fair
Sat 04:00 1.56 · high 5.94 · high 30.10 · good fair
Sat 05:00 1.52 · high 6.01 · high 30.20 · good fair
Sat 06:00 1.50 · high 6.06 · high 30.20 · good fair
Sat 07:00 1.48 · high 5.94 · high 30.20 · good fair
Sat 08:00 1.46 · high 5.65 · high 30.20 · good fair
Sat 09:00 1.44 · high 5.56 · high 30.20 · good fair
Sat 10:00 1.42 · high 5.08 · good 30.20 · good fair
Sat 11:00 1.40 · high 5.03 · good 30.20 · good poor
Sat 12:00 1.38 · high 5.55 · high 30.20 · good poor
Sat 13:00 1.36 · high 5.63 · high 30.10 · good poor
Sat 14:00 1.36 · high 5.38 · good 30.10 · good poor
Sat 15:00 1.34 · high 5.01 · good 30.10 · good poor
Sat 16:00 1.34 · high 5.05 · good 30.00 · good poor
Sat 17:00 1.32 · high 5.09 · good 30.00 · good poor
Sat 18:00 1.32 · high 4.87 · good 30.00 · good poor
Sat 19:00 1.30 · high 4.64 · good 29.90 · good poor
Sat 20:00 1.28 · high 4.35 · good 29.90 · good poor
Sat 21:00 1.26 · high 4.49 · good 29.90 · good poor
Sat 22:00 1.24 · high 4.57 · good 29.90 · good poor
Sat 23:00 1.20 · high 4.77 · good 29.90 · good poor
Sun 00:00 1.18 · high 4.88 · good 29.90 · good fair
Sun 01:00 1.16 · high 4.96 · good 29.90 · good fair
Sun 02:00 1.14 · high 5.06 · good 30.00 · good fair
Sun 03:00 1.12 · high 5.06 · good 30.00 · good fair
Sun 04:00 1.10 · high 4.70 · good 30.10 · good poor
Sun 05:00 1.06 · high 4.38 · good 30.10 · good poor
Sun 06:00 1.04 · high 4.40 · good 30.20 · good poor
Sun 07:00 1.02 · high 4.04 · good 30.20 · good poor
Sun 08:00 1.00 · high 4.12 · good 30.20 · good poor
Sun 09:00 0.98 · high 4.06 · good 30.20 · good fair
Sun 10:00 0.96 · high 3.86 · good 30.20 · good fair
Sun 11:00 0.94 · high 3.55 · good 30.20 · good poor
Sun 12:00 0.92 · high 3.47 · good 30.20 · good poor
Sun 13:00 0.90 · high 3.51 · good 30.20 · good poor
Sun 14:00 0.88 · high 3.33 · good 30.10 · good poor
Sun 15:00 0.86 · high 3.18 · good 30.10 · good poor
Sun 16:00 0.86 · high 2.94 · good 30.10 · good poor
Sun 17:00 0.84 · high 2.72 · good 30.00 · good poor
Sun 18:00 0.84 · high 2.93 · good 30.00 · good poor
Sun 19:00 0.82 · high 3.32 · good 30.00 · good poor
Sun 20:00 0.82 · high 3.64 · good 30.00 · good poor
Sun 21:00 0.80 · high 4.00 · good 29.90 · good poor
Sun 22:00 0.78 · high 3.72 · good 29.90 · good poor
Sun 23:00 0.78 · high 3.28 · good 29.90 · good poor
Mon 00:00 0.76 · high 3.05 · good 29.90 · good fair
Mon 01:00 0.74 · high 2.97 · good 30.00 · good fair
Mon 02:00 0.74 · high 3.05 · good 30.00 · good poor
Mon 03:00 0.72 · high 3.65 · good 30.40 · good poor
Mon 04:00 0.72 · high 3.56 · good 30.50 · out of range fair
Mon 05:00 0.70 · high 3.69 · good 30.60 · out of range fair
Mon 06:00 0.70 · high 3.57 · good 30.60 · out of range poor
Mon 07:00 0.68 · high 3.30 · good 30.60 · out of range fair
Mon 08:00 0.68 · high 3.17 · good 30.70 · out of range fair
Mon 09:00 0.66 · high 2.93 · good 30.60 · out of range fair
Mon 10:00 0.64 · high 2.50 · good 30.60 · out of range fair