SnorkelForecast.com

Ishigaki Snorkel Report Today

Japan · Updated Sun 00:35 (JST) · Source: Snapshot

The skinny

Marginal Data updated Sun 00:35 (JST)

Ishigaki looks marginal today. The least-bad daylight window is around Sun 18:00, but waves is limiting the forecast.

Right now (forecast)

Poor · 0.0/10

Sun 01:00 (JST)

Later today

Fair · 3.9/10

Sun 18:00 (JST)

Next three days

Fair · 4.3/10

Tue 17:00 (JST)

Model estimates using Open-Meteo; not observations or safety guarantees. Check official advisories and conditions at the beach.

Score: 3.9/10

Best time: Sun 18:00

Main risk: Waves

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

Best afternoon signal: Sun 18:00 (Fair). Peak afternoon wind is about 6.2 m/s.

Email me when it is good

Sunrise

06:28

Sunset

18:50

Water

29.1°C

Max air

29.9°C

Sky

Clear

10% 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

Sunday

⚠️ Fair conditions

Main blocker: Waves

Monday

⚠️ Fair conditions

Main blocker: Waves

Tuesday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

  • Tue 17:00: Fair (0.43) · still limited by waves, wind
  • Tue 13:00: Fair (0.42) · still limited by waves, tide/current
  • Tue 09:00: Fair (0.41) · 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: Sun 08:00

Sun 08:00, Sun 20:00, Mon 08:00, Mon 20:00, Tue 09:00, Tue 21:00

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

Fri 01:00 – Mon 01:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.49 around Fri 10:00; 10 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 1.12m to 1.2m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.25 to 4.33m/s).

Tides range from 0.14m to 2.03m; 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
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
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
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
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 01:00 1.16 · high 2.42 · good 29.70 · good Poor
Fri 02:00 1.16 · high 2.45 · good 29.60 · good Poor
Fri 03:00 1.16 · high 2.12 · good 29.60 · good Poor
Fri 04:00 1.18 · high 3.23 · good 29.60 · good Poor
Fri 05:00 1.18 · high 3.85 · good 29.60 · good Poor
Fri 06:00 1.20 · high 3.65 · good 29.60 · good Poor
Fri 07:00 1.20 · high 3.86 · good 29.60 · good Poor
Fri 08:00 1.20 · high 3.80 · good 29.60 · good Poor
Fri 09:00 1.20 · high 1.65 · good 29.60 · good Fair
Fri 10:00 1.18 · high 1.25 · good 29.60 · good Fair
Fri 11:00 1.18 · high 0.64 · good 29.70 · good Fair
Fri 12:00 1.16 · high 0.25 · good 29.70 · good Fair
Fri 13:00 1.14 · high 1.01 · good 29.80 · good Fair
Fri 14:00 1.14 · high 2.67 · good 29.80 · good Fair
Fri 15:00 1.12 · high 3.80 · good 29.90 · good Fair
Fri 16:00 1.12 · high 4.33 · good 29.90 · good Fair
Fri 17:00 1.12 · high 4.18 · good 29.90 · good Fair
Fri 18:00 1.12 · high 4.20 · good 29.90 · good Fair
Fri 19:00 1.12 · high 3.99 · good 29.80 · good Poor
Fri 20:00 1.14 · high 3.77 · good 30.10 · good Poor
Fri 21:00 1.14 · high 3.79 · good 30.10 · good Poor
Fri 22:00 1.14 · high 3.68 · good 30.00 · good Poor
Fri 23:00 1.16 · high 2.78 · good 30.00 · good Poor
Sat 00:00 1.16 · high 3.10 · good 30.00 · good Poor
Sat 01:00 1.16 · high 3.00 · good 30.00 · good Poor
Sat 02:00 1.14 · high 1.88 · good 29.90 · good Poor
Sat 03:00 1.14 · high 1.84 · good 29.90 · good Poor
Sat 04:00 1.14 · high 1.56 · good 29.90 · good Poor
Sat 05:00 1.12 · high 1.79 · good 29.90 · good Poor
Sat 06:00 1.12 · high 2.22 · good 29.90 · good Poor
Sat 07:00 1.12 · high 2.19 · good 29.80 · good Poor
Sat 08:00 1.10 · high 2.69 · good 29.80 · good Poor
Sat 09:00 1.10 · high 2.45 · good 29.90 · good Fair
Sat 10:00 1.46 · high 1.86 · good 29.90 · good Fair
Sat 11:00 1.46 · high 1.32 · good 30.10 · good Fair
Sat 12:00 1.44 · high 0.75 · good 30.20 · good Fair
Sat 13:00 1.42 · high 1.63 · good 30.30 · good Fair
Sat 14:00 1.42 · high 2.55 · good 30.40 · good Fair
Sat 15:00 1.40 · high 4.02 · good 30.50 · out of range Fair
Sat 16:00 1.48 · high 4.06 · good 30.50 · out of range Fair
Sat 17:00 1.48 · high 4.21 · good 30.50 · out of range Fair
Sat 18:00 1.48 · high 4.61 · good 30.40 · good Fair
Sat 19:00 1.50 · high 4.02 · good 30.40 · good Fair
Sat 20:00 1.04 · high 3.95 · good 30.30 · good Poor
Sat 21:00 1.04 · high 4.45 · good 30.30 · good Poor
Sat 22:00 1.04 · high 3.86 · good 30.20 · good Poor
Sat 23:00 1.04 · high 3.59 · good 30.20 · good Poor
Sun 00:00 1.04 · high 3.40 · good 30.10 · good Poor
Sun 01:00 1.04 · high 3.53 · good 30.10 · good Poor
Sun 02:00 1.06 · high 3.18 · good 30.10 · good Poor
Sun 03:00 1.06 · high 1.88 · good 30.00 · good Poor
Sun 04:00 1.06 · high 1.50 · good 30.00 · good Poor
Sun 05:00 1.04 · high 0.75 · good 30.00 · good Poor
Sun 06:00 1.04 · high 0.78 · good 29.90 · good Poor
Sun 07:00 1.04 · high 0.78 · good 29.90 · good Poor
Sun 08:00 1.04 · high 0.86 · good 29.90 · good Poor
Sun 09:00 1.04 · high 0.94 · good 30.00 · good Fair
Sun 10:00 1.04 · high 1.20 · good 30.00 · good Fair
Sun 11:00 1.02 · high 1.65 · good 30.20 · good Fair
Sun 12:00 1.02 · high 2.25 · good 30.30 · good Fair
Sun 13:00 1.00 · high 3.15 · good 30.40 · good Fair
Sun 14:00 1.00 · high 3.36 · good 30.50 · out of range Fair
Sun 15:00 0.98 · high 3.58 · good 30.60 · out of range Fair
Sun 16:00 0.98 · high 3.60 · good 30.60 · out of range Fair
Sun 17:00 0.96 · high 3.67 · good 30.60 · out of range Fair
Sun 18:00 0.96 · high 3.88 · good 30.50 · out of range Fair
Sun 19:00 0.94 · high 3.85 · good 30.50 · out of range Fair
Sun 20:00 0.90 · high 3.24 · good 30.50 · out of range Poor
Sun 21:00 0.90 · high 3.20 · good 30.50 · out of range Poor
Sun 22:00 0.90 · high 3.30 · good 30.40 · good Poor
Sun 23:00 0.90 · high 3.46 · good 30.40 · good Poor
Mon 00:00 0.90 · high 2.75 · good 30.40 · good Poor