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 17:16

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.

Best afternoon signal: Tue 18:00 (Fair). Peak afternoon wind is about 4.3 m/s.

Email me when it is good

Sunrise

06:10

Sunset

19:29

Water

30.7°C

Max air

29.5°C

Sky

Clear

20% cloud

Good window is available today

Next safe window: Thu 01:00 (2% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Tuesday

⚠️ fair 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 (41 hours)
  • Tide/current (41 hours)
  • Darkness (26 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 10:00, 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 live forecast

Tue 08:00 – Fri 08:00 (JST)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.52 around Wed 09:00; 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 0.56m to 0.6m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 1.38 to 4.29m/s).

Tides range from 0.17m to 1.76m; 2 of 24 hours are in or near peak slack windows.

72-hour forecast overview
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
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
good 🌟 Good
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
Tue 09:00 0.58 · high 4.29 · good 30.70 · out of range fair
Tue 10:00 0.58 · high 4.15 · good 30.70 · out of range fair
Tue 11:00 0.58 · high 3.85 · good 30.70 · out of range poor
Tue 12:00 0.58 · high 3.51 · good 30.60 · out of range poor
Tue 13:00 0.58 · high 2.98 · good 30.60 · out of range poor
Tue 14:00 0.58 · high 3.11 · good 30.60 · out of range poor
Tue 15:00 0.58 · high 2.83 · good 30.50 · out of range poor
Tue 16:00 0.58 · high 2.72 · good 30.50 · out of range poor
Tue 17:00 0.60 · high 2.82 · good 30.50 · out of range poor
Tue 18:00 0.60 · high 3.35 · good 30.40 · good poor
Tue 19:00 0.60 · high 4.10 · good 30.40 · good poor
Tue 20:00 0.58 · high 3.75 · good 30.40 · good poor
Tue 21:00 0.58 · high 2.51 · good 30.30 · good poor
Tue 22:00 0.58 · high 2.66 · good 30.30 · good poor
Tue 23:00 0.56 · high 2.78 · good 30.30 · good poor
Wed 00:00 0.56 · high 2.80 · good 30.30 · good fair
Wed 01:00 0.56 · high 3.01 · good 30.30 · good fair
Wed 02:00 0.56 · high 2.94 · good 30.40 · good fair
Wed 03:00 0.56 · high 3.40 · good 30.50 · out of range fair
Wed 04:00 0.56 · high 2.99 · good 30.60 · out of range fair
Wed 05:00 0.58 · high 1.38 · good 30.60 · out of range fair
Wed 06:00 0.58 · high 2.34 · good 30.70 · out of range fair
Wed 07:00 0.58 · high 2.90 · good 30.70 · out of range fair
Wed 08:00 0.58 · high 3.19 · good 30.70 · out of range fair
Wed 09:00 0.58 · high 3.54 · good 30.70 · out of range fair
Wed 10:00 0.58 · high 3.54 · good 30.60 · out of range fair
Wed 11:00 0.56 · high 3.44 · good 30.60 · out of range poor
Wed 12:00 0.56 · high 3.44 · good 30.60 · out of range poor
Wed 13:00 0.56 · high 3.20 · good 30.50 · out of range poor
Wed 14:00 0.56 · high 2.97 · good 30.50 · out of range poor
Wed 15:00 0.56 · high 2.80 · good 30.50 · out of range poor
Wed 16:00 0.54 · high 2.20 · good 30.40 · good poor
Wed 17:00 0.54 · high 2.16 · good 30.40 · good poor
Wed 18:00 0.52 · high 2.01 · good 30.40 · good poor
Wed 19:00 0.52 · high 1.85 · good 30.40 · good poor
Wed 20:00 0.52 · high 1.82 · good 30.30 · good poor
Wed 21:00 0.52 · high 1.57 · good 30.30 · good poor
Wed 22:00 0.52 · high 2.09 · good 30.30 · good poor
Wed 23:00 0.52 · high 2.69 · good 30.30 · good poor
Thu 00:00 0.52 · high 2.30 · good 30.30 · good fair
Thu 01:00 0.50 · high 1.32 · good 30.40 · good good