MARINE REPORT / 72 HOURS

Okinawa - Blue Cave Snorkel Report Today

Japan · Updated Wed 03:52 (JST) · Source: Snapshot

The skinny

Marginal Data updated Wed 03:52 (JST)

Okinawa - Blue Cave looks marginal today. The least-bad daylight window is around Wed 09:00, but waves is limiting the forecast.

Right now (forecast)

Poor · 0.0/10

Wed 05:00 (JST)

Later today

Fair · 5.4/10

Wed 09:00 (JST)

Next three days

Fair · 5.4/10

Wed 09:00 (JST)

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

Score: 5.4/10

Best time: Wed 09:00

Main risk: Waves

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

Best afternoon signal: Wed 17:00 (Fair). Peak afternoon wind is about 5.1 m/s.

Email me when it is good

Sunrise

06:30

Sunset

17:56

Water

27.9°C

Max air

30.7°C

Sky

Clear

9% 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

Wednesday

⚠️ Fair conditions

Main blocker: Waves

Thursday

❌ Poor conditions

Main blocker: Waves

Friday

❌ Poor conditions

Main blocker: Waves

Best available hours

  • Wed 09:00: Fair (0.54) · still limited by waves, tide/current
  • Wed 10:00: Fair (0.50) · still limited by waves, tide/current
  • Wed 11:00: Fair (0.49) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (69 hours)
  • Tide/current (68 hours)
  • Wind (57 hours)

Jellyfish drift risk

Drift estimate from wind, swell, current and warm water.

Low · 34/100

Low peak drift risk around Wed 14:00.

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: Thu 04:00

Wed 16:00, Thu 04:00, Thu 17:00, Fri 05:00, Fri 17:00

Nearby alternatives in Japan

Kerama Islands

56 km away

❌ Poor

Miyako

314 km away

❌ Poor

Ishigaki

438 km away

❌ Poor

Advanced forecast data

Viewing historical data

Fri 05:00 – Mon 05:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.79 around Fri 18:00; 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.

24/24 sampled hours stay at or below 0.36m (range 0.22m to 0.3m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.57 to 2.66m/s).

Tides range from 0.12m to 1.76m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Excellent ✅ Excellent
Excellent ✅ Excellent
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
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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 05:00 0.28 · good 2.18 · good 28.90 · good Poor
Fri 06:00 0.28 · good 2.26 · good 28.80 · good Poor
Fri 07:00 0.28 · good 2.42 · good 28.80 · good Poor
Fri 08:00 0.26 · good 2.66 · good 28.80 · good Poor
Fri 09:00 0.26 · good 1.75 · good 28.90 · good Excellent
Fri 10:00 0.26 · good 2.10 · good 29.00 · good Excellent
Fri 11:00 0.24 · good 2.21 · good 29.10 · good Excellent
Fri 12:00 0.24 · good 1.53 · good 29.30 · good Excellent
Fri 13:00 0.24 · good 0.57 · good 29.50 · good Good
Fri 14:00 0.24 · good 1.22 · good 29.60 · good Good
Fri 15:00 0.24 · good 1.52 · good 29.70 · good Good
Fri 16:00 0.24 · good 1.75 · good 29.70 · good Good
Fri 17:00 0.22 · good 0.68 · good 29.60 · good Excellent
Fri 18:00 0.22 · good 1.64 · good 29.50 · good Excellent
Fri 19:00 0.22 · good 1.47 · good 29.40 · good Poor
Fri 20:00 0.24 · good 2.26 · good 29.30 · good Poor
Fri 21:00 0.24 · good 1.66 · good 29.30 · good Poor
Fri 22:00 0.24 · good 1.35 · good 29.20 · good Poor
Fri 23:00 0.28 · good 1.55 · good 29.20 · good Poor
Sat 00:00 0.28 · good 1.60 · good 29.20 · good Poor
Sat 01:00 0.28 · good 1.24 · good 29.10 · good Poor
Sat 02:00 0.30 · good 1.05 · good 29.10 · good Poor
Sat 03:00 0.30 · good 1.11 · good 29.10 · good Poor
Sat 04:00 0.30 · good 2.15 · good 29.00 · good Poor
Sat 05:00 0.32 · good 2.42 · good 29.00 · good Poor
Sat 06:00 0.32 · good 1.93 · good 29.00 · good Poor
Sat 07:00 0.32 · good 3.22 · good 29.00 · good Poor
Sat 08:00 0.34 · good 3.68 · good 29.00 · good Poor
Sat 09:00 0.34 · good 3.33 · good 29.00 · good Good
Sat 10:00 0.34 · good 3.15 · good 29.10 · good Good
Sat 11:00 0.36 · good 2.58 · good 29.30 · good Good
Sat 12:00 0.36 · good 1.84 · good 29.40 · good Good
Sat 13:00 0.36 · good 1.33 · good 29.60 · good Good
Sat 14:00 0.36 · good 0.97 · good 29.80 · good Good
Sat 15:00 0.36 · good 0.72 · good 29.80 · good Good
Sat 16:00 0.36 · good 0.83 · good 29.80 · good Good
Sat 17:00 0.36 · good 2.09 · good 29.80 · good Good
Sat 18:00 0.36 · good 2.93 · good 29.70 · good Good
Sat 19:00 0.36 · good 2.72 · good 29.60 · good Poor
Sat 20:00 0.36 · good 2.51 · good 29.50 · good Poor
Sat 21:00 0.36 · good 2.17 · good 29.40 · good Poor
Sat 22:00 0.40 · high 2.38 · good 29.40 · good Poor
Sat 23:00 0.40 · high 2.66 · good 29.30 · good Poor
Sun 00:00 0.40 · high 2.29 · good 29.30 · good Poor
Sun 01:00 0.40 · high 2.30 · good 29.30 · good Poor
Sun 02:00 0.40 · high 2.80 · good 29.20 · good Poor
Sun 03:00 0.40 · high 3.01 · good 29.20 · good Poor
Sun 04:00 0.40 · high 2.97 · good 29.20 · good Poor
Sun 05:00 0.42 · high 1.82 · good 29.20 · good Poor
Sun 06:00 0.42 · high 2.62 · good 29.20 · good Poor
Sun 07:00 0.42 · high 3.71 · good 29.10 · good Poor
Sun 08:00 0.44 · high 3.89 · good 29.10 · good Poor
Sun 09:00 0.44 · high 4.05 · good 29.20 · good Fair
Sun 10:00 0.44 · high 4.16 · good 29.20 · good Fair
Sun 11:00 0.46 · high 4.54 · good 29.30 · good Fair
Sun 12:00 0.46 · high 4.64 · good 29.40 · good Fair
Sun 13:00 0.46 · high 5.19 · good 29.50 · good Fair
Sun 14:00 0.48 · high 4.24 · good 29.60 · good Fair
Sun 15:00 0.48 · high 4.78 · good 29.70 · good Fair
Sun 16:00 0.48 · high 4.13 · good 29.70 · good Fair
Sun 17:00 0.48 · high 4.75 · good 29.60 · good Fair
Sun 18:00 0.48 · high 5.46 · high 29.60 · good Fair
Sun 19:00 0.50 · high 4.31 · good 29.50 · good Poor
Sun 20:00 0.72 · high 5.27 · good 29.50 · good Poor
Sun 21:00 0.56 · high 4.26 · good 29.40 · good Poor
Sun 22:00 0.56 · high 4.28 · good 29.40 · good Poor
Sun 23:00 0.56 · high 3.78 · good 29.30 · good Poor
Mon 00:00 0.56 · high 3.24 · good 29.30 · good Poor
Mon 01:00 0.54 · high 3.65 · good 29.30 · good Poor
Mon 02:00 0.54 · high 3.40 · good 29.20 · good Poor
Mon 03:00 0.52 · high 3.86 · good 29.20 · good Poor
Mon 04:00 0.50 · high 4.33 · good 29.20 · good Poor