MARINE REPORT / 72 HOURS

Okinawa - Blue Cave Snorkel Report Today

Japan · Updated Tue 21:21 (JST) · Source: Snapshot

The skinny

No forecast for later today Data updated Tue 21:21 (JST)

No remaining forecast hours are available for today in Okinawa - Blue Cave. Check the three-day outlook.

Right now (forecast)

Poor · 0.0/10

Tue 23:00 (JST)

Later today

No fresh data for this period.

Next three days

Fair · 4.7/10

Wed 09:00 (JST)

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

Score: No score

Best time: -

Main risk: Changing Conditions

No useful morning window is showing yet.

No useful afternoon window is showing yet.

Email me when it is good

Sunrise

06:30

Sunset

17:56

Water

28.0°C

Max air

30.6°C

Sky

Partly cloudy

43% 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 (0.47) · still limited by waves, tide/current
  • Wed 11:00: Fair (0.45) · still limited by waves, tide/current
  • Wed 10:00: Fair (0.40) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (69 hours)
  • Tide/current (68 hours)
  • Wind (50 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

Wed 23:00 – Sat 23:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.73 around Thu 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.

21/24 sampled hours stay at or below 0.36m (range 0.26m to 0.42m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.34 to 4.45m/s).

Tides range from 0.0m to 1.73m; 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
Poor ❌ Limited
Poor ❌ Limited
Good 🌟 Good
Good 🌟 Good
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
Fair ⚠️ Fair
Fair ⚠️ Fair
Good 🌟 Good
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
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
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
Thu 02:00 0.36 · good 0.85 · good 29.00 · good Poor
Thu 03:00 0.36 · good 0.50 · good 29.00 · good Poor
Thu 04:00 0.36 · good 0.34 · good 29.00 · good Poor
Thu 05:00 0.34 · good 0.90 · good 29.00 · good Poor
Thu 06:00 0.34 · good 1.05 · good 29.00 · good Poor
Thu 07:00 0.34 · good 1.43 · good 29.00 · good Poor
Thu 08:00 0.32 · good 1.77 · good 29.00 · good Poor
Thu 09:00 0.32 · good 2.23 · good 29.00 · good Good
Thu 10:00 0.32 · good 2.48 · good 29.10 · good Good
Thu 11:00 0.30 · good 3.00 · good 29.10 · good Excellent
Thu 12:00 0.30 · good 3.92 · good 29.20 · good Good
Thu 13:00 0.30 · good 4.45 · good 29.30 · good Good
Thu 14:00 0.30 · good 4.06 · good 29.30 · good Good
Thu 15:00 0.30 · good 2.71 · good 29.30 · good Good
Thu 16:00 0.30 · good 3.08 · good 29.30 · good Good
Thu 17:00 0.32 · good 2.92 · good 29.30 · good Good
Thu 18:00 0.32 · good 2.08 · good 29.30 · good Excellent
Thu 19:00 0.32 · good 1.25 · good 29.20 · good Poor
Thu 20:00 0.26 · good 1.33 · good 29.20 · good Poor
Thu 21:00 0.26 · good 2.02 · good 29.20 · good Poor
Thu 22:00 0.26 · good 1.45 · good 29.10 · good Poor
Thu 23:00 0.24 · good 1.55 · good 29.10 · good Poor
Fri 00:00 0.24 · good 2.12 · good 29.10 · good Poor
Fri 01:00 0.30 · good 1.73 · good 29.10 · good Poor
Fri 02:00 0.30 · good 1.08 · good 29.00 · good Poor
Fri 03:00 0.30 · good 1.38 · good 29.00 · good Poor
Fri 04:00 0.30 · good 2.94 · good 29.00 · good Poor
Fri 05:00 0.32 · good 2.33 · good 29.00 · good Poor
Fri 06:00 0.32 · good 2.48 · good 29.00 · good Poor
Fri 07:00 0.38 · high 3.57 · good 29.00 · good Poor
Fri 08:00 0.42 · high 4.10 · good 29.00 · good Poor
Fri 09:00 0.48 · high 4.40 · good 29.00 · good Good
Fri 10:00 0.52 · high 4.30 · good 29.00 · good Fair
Fri 11:00 0.58 · high 4.99 · good 29.00 · good Fair
Fri 12:00 0.62 · high 4.65 · good 29.00 · good Good
Fri 13:00 0.64 · high 4.54 · good 29.10 · good Fair
Fri 14:00 0.64 · high 4.82 · good 29.10 · good Fair
Fri 15:00 0.66 · high 5.54 · high 29.10 · good Fair
Fri 16:00 0.68 · high 5.46 · high 29.10 · good Fair
Fri 17:00 0.70 · high 5.12 · good 29.10 · good Fair
Fri 18:00 0.72 · high 4.12 · good 29.00 · good Fair
Fri 19:00 0.74 · high 3.99 · good 29.00 · good Poor
Fri 20:00 0.82 · high 3.78 · good 29.00 · good Poor
Fri 21:00 0.82 · high 4.42 · good 29.00 · good Poor
Fri 22:00 0.82 · high 3.72 · good 29.00 · good Poor
Fri 23:00 0.84 · high 2.84 · good 29.00 · good Poor
Sat 00:00 0.84 · high 3.40 · good 28.90 · good Poor
Sat 01:00 0.82 · high 2.90 · good 28.90 · good Poor
Sat 02:00 0.82 · high 3.29 · good 28.90 · good Poor
Sat 03:00 0.88 · high 3.08 · good 28.90 · good Poor
Sat 04:00 0.86 · high 2.02 · good 28.90 · good Poor
Sat 05:00 0.86 · high 2.48 · good 28.90 · good Poor
Sat 06:00 0.84 · high 3.51 · good 28.90 · good Poor
Sat 07:00 0.84 · high 3.26 · good 28.90 · good Poor
Sat 08:00 0.82 · high 3.78 · good 28.90 · good Poor
Sat 09:00 0.82 · high 3.15 · good 28.90 · good Fair
Sat 10:00 0.80 · high 2.87 · good 28.90 · good Fair
Sat 11:00 0.80 · high 2.75 · good 29.00 · good Fair
Sat 12:00 0.78 · high 2.73 · good 29.00 · good Fair
Sat 13:00 0.76 · high 3.15 · good 29.10 · good Fair
Sat 14:00 0.76 · high 4.08 · good 29.10 · good Fair
Sat 15:00 0.74 · high 3.64 · good 29.10 · good Fair
Sat 16:00 0.72 · high 3.19 · good 29.10 · good Fair
Sat 17:00 0.72 · high 3.22 · good 29.10 · good Fair
Sat 18:00 0.70 · high 2.67 · good 29.00 · good Fair
Sat 19:00 0.68 · high 2.09 · good 29.00 · good Poor
Sat 20:00 0.68 · high 2.44 · good 29.00 · good Poor
Sat 21:00 0.66 · high 2.31 · good 29.00 · good Poor
Sat 22:00 0.64 · high 2.37 · good 28.90 · good Poor