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 Wed 00:34

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

Best morning signal: Wed 09:00 (Fair).

Best afternoon signal: Wed 17:00 (Fair). Peak afternoon wind is about 3.5 m/s.

Email me when it is good

Sunrise

06:10

Sunset

19:29

Water

30.5°C

Max air

30.7°C

Sky

Cloudy

91% 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

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 (34 hours)
  • Tide/current (34 hours)
  • Darkness (21 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

Sun 15:00 – Wed 15:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.38 around Mon 18:00; 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 0.84m to 1.16m).

Wind is at or below 5.4m/s in 5/24 sampled hours (range 4.86 to 6.48m/s).

Tides range from 0.69m to 1.64m; 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
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
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
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
good 🌟 Good
good 🌟 Good
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
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
Sun 15:00 1.16 · high 6.48 · high 30.00 · good poor
Sun 16:00 1.14 · high 6.31 · high 30.00 · good poor
Sun 17:00 1.14 · high 6.47 · high 30.00 · good poor
Sun 18:00 1.12 · high 6.04 · high 29.90 · good poor
Sun 19:00 1.10 · high 6.12 · high 29.90 · good poor
Sun 20:00 1.06 · high 6.06 · high 29.90 · good poor
Sun 21:00 1.04 · high 5.92 · high 29.80 · good poor
Sun 22:00 1.04 · high 5.64 · high 29.80 · good poor
Sun 23:00 1.02 · high 5.80 · high 29.80 · good poor
Mon 00:00 1.02 · high 6.10 · high 29.80 · good fair
Mon 01:00 1.00 · high 6.06 · high 29.90 · good fair
Mon 02:00 0.98 · high 6.22 · high 29.90 · good fair
Mon 03:00 0.96 · high 6.11 · high 30.00 · good fair
Mon 04:00 0.94 · high 6.33 · high 30.10 · good fair
Mon 05:00 0.90 · high 6.00 · high 30.20 · good fair
Mon 06:00 0.88 · high 5.84 · high 30.20 · good fair
Mon 07:00 0.88 · high 5.94 · high 30.30 · good fair
Mon 08:00 0.86 · high 5.55 · high 30.30 · good fair
Mon 09:00 0.86 · high 5.36 · good 30.30 · good fair
Mon 10:00 0.86 · high 5.15 · good 30.30 · good fair
Mon 11:00 0.84 · high 4.86 · good 30.20 · good poor
Mon 12:00 0.84 · high 5.10 · good 30.20 · good poor
Mon 13:00 0.84 · high 5.17 · good 30.20 · good poor
Mon 14:00 0.86 · high 5.49 · high 30.20 · good poor
Mon 15:00 0.86 · high 6.04 · high 30.10 · good poor
Mon 16:00 0.90 · high 6.15 · high 30.10 · good poor
Mon 17:00 0.92 · high 6.08 · high 30.00 · good poor
Mon 18:00 0.96 · high 6.24 · high 30.00 · good poor
Mon 19:00 0.96 · high 6.34 · high 29.90 · good poor
Mon 20:00 0.96 · high 5.86 · high 29.90 · good poor
Mon 21:00 0.96 · high 5.57 · high 29.90 · good poor
Mon 22:00 0.94 · high 5.30 · good 29.90 · good poor
Mon 23:00 0.90 · high 5.74 · high 29.90 · good poor
Tue 00:00 0.88 · high 5.76 · high 29.90 · good fair
Tue 01:00 0.86 · high 5.84 · high 29.90 · good poor
Tue 02:00 0.84 · high 6.44 · high 30.00 · good poor
Tue 03:00 0.82 · high 6.40 · high 30.10 · good poor
Tue 04:00 0.80 · high 6.63 · high 30.20 · good poor
Tue 05:00 0.86 · high 5.73 · high 30.20 · good fair
Tue 06:00 0.84 · high 5.40 · good 30.30 · good fair
Tue 07:00 0.80 · high 5.44 · high 30.30 · good fair
Tue 08:00 0.76 · high 5.03 · good 30.30 · good fair
Tue 09:00 0.72 · high 4.74 · good 30.30 · good fair
Tue 10:00 0.70 · high 4.32 · good 30.30 · good fair
Tue 11:00 0.66 · high 3.54 · good 30.20 · good poor
Tue 12:00 0.64 · high 3.62 · good 30.20 · good poor
Tue 13:00 0.62 · high 3.24 · good 30.20 · good poor
Tue 14:00 0.60 · high 3.08 · good 30.20 · good poor
Tue 15:00 0.58 · high 3.45 · good 30.10 · good poor
Tue 16:00 0.58 · high 3.76 · good 30.10 · good poor
Tue 17:00 0.56 · high 3.76 · good 30.10 · good poor
Tue 18:00 0.56 · high 3.62 · good 30.00 · good poor
Tue 19:00 0.56 · high 3.60 · good 30.00 · good poor
Tue 20:00 0.56 · high 3.54 · good 30.00 · good poor
Tue 21:00 0.56 · high 3.46 · good 29.90 · good poor
Tue 22:00 0.56 · high 3.53 · good 29.90 · good poor
Tue 23:00 0.56 · high 3.51 · good 29.90 · good poor
Wed 00:00 0.56 · high 3.43 · good 29.90 · good good
Wed 01:00 0.56 · high 3.39 · good 30.00 · good good
Wed 02:00 0.54 · high 3.11 · good 30.10 · good fair
Wed 03:00 0.54 · high 3.36 · good 30.10 · good fair
Wed 04:00 0.54 · high 3.74 · good 30.20 · good fair
Wed 05:00 0.52 · high 3.54 · good 30.30 · good fair
Wed 06:00 0.52 · high 3.12 · good 30.40 · good fair
Wed 07:00 0.52 · high 2.67 · good 30.40 · good fair
Wed 08:00 0.52 · high 2.47 · good 30.40 · good fair
Wed 09:00 0.52 · high 3.04 · good 30.40 · good fair
Wed 10:00 0.50 · high 3.06 · good 30.40 · good fair
Wed 11:00 0.50 · high 2.31 · good 30.40 · good poor
Wed 12:00 0.48 · high 2.00 · good 30.40 · good poor
Wed 13:00 0.48 · high 1.97 · good 30.40 · good poor
Wed 14:00 0.46 · high 1.94 · good 30.30 · good poor