MARINE REPORT / 72 HOURS

Okinawa - Blue Cave Snorkel Report Today

Japan · Updated Wed 00:32 (JST) · Source: Snapshot

The skinny

Marginal Data updated Wed 00:32 (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 02:00 (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

12% 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 (0.48) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (69 hours)
  • Tide/current (68 hours)
  • Wind (54 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: Wed 03:00

Wed 03:00, 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

Mon 02:00 – Thu 02:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.47 around Mon 16:00; 8 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 0.48m to 0.8m).

Wind is at or below 5.4m/s in 13/24 sampled hours (range 3.4 to 7.27m/s).

Tides range from 0.03m to 1.94m; 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
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
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
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
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
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
Mon 05:00 0.50 · high 4.59 · good 29.20 · good Poor
Mon 06:00 0.48 · high 5.08 · good 29.20 · good Poor
Mon 07:00 0.50 · high 5.80 · high 29.20 · good Poor
Mon 08:00 0.50 · high 5.88 · high 29.20 · good Poor
Mon 09:00 0.52 · high 6.19 · high 29.20 · good Fair
Mon 10:00 0.54 · high 6.53 · high 29.20 · good Fair
Mon 11:00 0.58 · high 6.01 · high 29.20 · good Fair
Mon 12:00 0.60 · high 6.20 · high 29.30 · good Fair
Mon 13:00 0.64 · high 6.79 · high 29.40 · good Poor
Mon 14:00 0.66 · high 6.82 · high 29.40 · good Poor
Mon 15:00 0.70 · high 7.27 · high 29.40 · good Fair
Mon 16:00 0.70 · high 6.10 · high 29.40 · good Fair
Mon 17:00 0.72 · high 5.80 · high 29.40 · good Fair
Mon 18:00 0.72 · high 5.22 · good 29.40 · good Fair
Mon 19:00 0.72 · high 5.10 · good 29.40 · good Poor
Mon 20:00 0.80 · high 4.96 · good 29.20 · good Poor
Mon 21:00 0.76 · high 4.56 · good 29.20 · good Poor
Mon 22:00 0.72 · high 4.60 · good 29.20 · good Poor
Mon 23:00 0.68 · high 5.00 · good 29.20 · good Poor
Tue 00:00 0.66 · high 4.26 · good 29.20 · good Poor
Tue 01:00 0.66 · high 4.53 · good 29.20 · good Poor
Tue 02:00 0.66 · high 4.24 · good 29.10 · good Poor
Tue 03:00 0.66 · high 4.84 · good 29.10 · good Poor
Tue 04:00 0.66 · high 4.96 · good 29.10 · good Poor
Tue 05:00 0.66 · high 5.00 · good 29.10 · good Poor
Tue 06:00 0.66 · high 5.08 · good 29.10 · good Poor
Tue 07:00 0.64 · high 4.60 · good 29.10 · good Poor
Tue 08:00 0.64 · high 4.52 · good 29.10 · good Poor
Tue 09:00 0.62 · high 4.60 · good 29.10 · good Fair
Tue 10:00 0.60 · high 4.81 · good 29.10 · good Fair
Tue 11:00 0.58 · high 4.91 · good 29.20 · good Fair
Tue 12:00 0.56 · high 5.19 · good 29.20 · good Fair
Tue 13:00 0.60 · high 5.21 · good 29.20 · good Fair
Tue 14:00 0.62 · high 5.34 · good 29.30 · good Fair
Tue 15:00 0.66 · high 5.25 · good 29.30 · good Fair
Tue 16:00 0.68 · high 5.34 · good 29.30 · good Poor
Tue 17:00 0.70 · high 5.24 · good 29.30 · good Fair
Tue 18:00 0.72 · high 4.82 · good 29.20 · good Fair
Tue 19:00 0.70 · high 4.39 · good 29.20 · good Poor
Tue 20:00 0.70 · high 4.12 · good 29.20 · good Poor
Tue 21:00 0.70 · high 3.30 · good 29.10 · good Poor
Tue 22:00 0.68 · high 3.09 · good 29.10 · good Poor
Tue 23:00 0.52 · high 3.49 · good 29.10 · good Poor
Wed 00:00 0.50 · high 3.54 · good 29.00 · good Poor
Wed 01:00 0.48 · high 3.47 · good 29.00 · good Poor
Wed 02:00 0.48 · high 2.87 · good 29.00 · good Poor
Wed 03:00 0.46 · high 2.84 · good 29.00 · good Poor
Wed 04:00 0.44 · high 2.32 · good 29.00 · good Poor
Wed 05:00 0.44 · high 2.24 · good 29.00 · good Poor
Wed 06:00 0.42 · high 1.77 · good 29.00 · good Poor
Wed 07:00 0.42 · high 1.88 · good 29.00 · good Poor
Wed 08:00 0.42 · high 2.40 · good 29.00 · good Poor
Wed 09:00 0.42 · high 3.29 · good 29.00 · good Fair
Wed 10:00 0.42 · high 3.75 · good 29.00 · good Fair
Wed 11:00 0.42 · high 4.29 · good 29.10 · good Fair
Wed 12:00 0.42 · high 4.45 · good 29.10 · good Fair
Wed 13:00 0.42 · high 4.63 · good 29.20 · good Fair
Wed 14:00 0.42 · high 4.53 · good 29.20 · good Fair
Wed 15:00 0.42 · high 4.14 · good 29.20 · good Fair
Wed 16:00 0.42 · high 3.80 · good 29.20 · good Good
Wed 17:00 0.40 · high 3.99 · good 29.20 · good Good
Wed 18:00 0.40 · high 3.21 · good 29.20 · good Good
Wed 19:00 0.40 · high 3.01 · good 29.10 · good Poor
Wed 20:00 0.42 · high 2.13 · good 29.20 · good Poor
Wed 21:00 0.42 · high 2.42 · good 29.10 · good Poor
Wed 22:00 0.42 · high 1.83 · good 29.10 · good Poor
Wed 23:00 0.42 · high 1.14 · good 29.10 · good Poor
Thu 00:00 0.38 · high 1.06 · good 29.10 · good Poor
Thu 01:00 0.38 · high 0.85 · good 29.00 · good Poor