MARINE REPORT / 72 HOURS

Okinawa - Blue Cave Snorkel Report Today

Japan · Updated Mon 07:36 (JST) · Source: Snapshot

The skinny

Go in the best window Data updated Mon 07:36 (JST)

Okinawa - Blue Cave has a usable snorkeling window around Mon 10:00. The main thing to watch is waves.

Right now (forecast)

Good · 6.4/10

Mon 09:00 (JST)

Later today

Good · 6.5/10

Mon 13:00 (JST)

Next three days

Good · 6.5/10

Mon 13:00 (JST)

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

Score: 6.5/10

Best time: Mon 10:00

Main risk: Waves

Best morning signal: Mon 10:00 (Good).

Best afternoon signal: Mon 13:00 (Good). Peak afternoon wind is about 4.2 m/s.

Email me when it is good

Sunrise

06:29

Sunset

17:57

Water

27.9°C

Max air

29.4°C

Sky

Partly cloudy

34% cloud

Good model window in the next 72 hours

Next good model window: Mon 10:00–13:00 (10% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Monday

✅ Good conditions

Main blocker: Waves

Tuesday

✅ Good conditions

Main blocker: Waves

Wednesday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

The next good model window starts at Mon 10:00 and lasts until 13:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (69 hours)
  • Tide/current (58 hours)
  • Darkness (43 hours)

Jellyfish drift risk

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

Low · 31/100

Low peak drift risk around Mon 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: Tue 01:00

Mon 15:00, Tue 01:00, Wed 03:00, Wed 16:00, Thu 04:00

Nearby alternatives in Japan

Kerama Islands

56 km away

⚠️ Fair

Miyako

314 km away

⚠️ Fair

Ishigaki

438 km away

⚠️ Fair

Advanced forecast data

Viewing historical data

Fri 09:00 – Mon 09:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.64 around Fri 11:00; 9 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 0.42m to 0.72m).

Wind is at or below 5.4m/s in 21/24 sampled hours (range 3.48 to 6.22m/s).

Tides range from 0.33m to 1.51m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Fair ⚠️ Fair
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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Poor ❌ Limited
Poor ❌ Limited
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
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Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Good 🌟 Good
Good 🌟 Good
Fair ⚠️ Fair
Good 🌟 Good
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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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 09:00 0.52 · high 4.10 · good 28.00 · good Fair
Fri 10:00 0.50 · high 4.25 · good 28.10 · good Good
Fri 11:00 0.50 · high 4.56 · good 28.20 · good Good
Fri 12:00 0.48 · high 4.83 · good 28.20 · good Good
Fri 13:00 0.46 · high 4.63 · good 28.30 · good Good
Fri 14:00 0.46 · high 4.40 · good 28.40 · good Good
Fri 15:00 0.44 · high 3.82 · good 28.40 · good Good
Fri 16:00 0.44 · high 4.24 · good 28.40 · good Fair
Fri 17:00 0.42 · high 3.94 · good 28.40 · good Fair
Fri 18:00 0.42 · high 3.54 · good 28.30 · good Poor
Fri 19:00 0.44 · high 3.48 · good 28.20 · good Poor
Fri 20:00 0.58 · high 4.15 · good 28.20 · good Poor
Fri 21:00 0.60 · high 4.11 · good 28.20 · good Poor
Fri 22:00 0.62 · high 3.97 · good 28.10 · good Poor
Fri 23:00 0.64 · high 4.18 · good 28.10 · good Poor
Sat 00:00 0.66 · high 4.41 · good 28.10 · good Poor
Sat 01:00 0.66 · high 4.53 · good 28.10 · good Poor
Sat 02:00 0.64 · high 4.54 · good 28.00 · good Poor
Sat 03:00 0.64 · high 5.04 · good 28.00 · good Poor
Sat 04:00 0.62 · high 5.15 · good 28.00 · good Poor
Sat 05:00 0.62 · high 5.37 · good 28.00 · good Poor
Sat 06:00 0.70 · high 5.71 · high 28.00 · good Poor
Sat 07:00 0.72 · high 5.88 · high 28.00 · good Poor
Sat 08:00 0.72 · high 6.22 · high 28.00 · good Poor
Sat 09:00 0.74 · high 5.92 · high 28.00 · good Fair
Sat 10:00 0.72 · high 6.32 · high 28.10 · good Fair
Sat 11:00 0.72 · high 5.77 · high 28.10 · good Fair
Sat 12:00 0.70 · high 5.34 · good 28.20 · good Fair
Sat 13:00 0.68 · high 5.23 · good 28.20 · good Fair
Sat 14:00 0.64 · high 5.13 · good 28.30 · good Fair
Sat 15:00 0.62 · high 5.62 · high 28.30 · good Fair
Sat 16:00 0.60 · high 5.65 · high 28.30 · good Fair
Sat 17:00 0.58 · high 5.49 · high 28.20 · good Fair
Sat 18:00 0.68 · high 6.08 · high 28.10 · good Poor
Sat 19:00 0.68 · high 6.04 · high 28.00 · good Poor
Sat 20:00 0.70 · high 6.57 · high 28.00 · good Poor
Sat 21:00 0.70 · high 6.47 · high 28.00 · good Poor
Sat 22:00 0.70 · high 6.36 · high 28.00 · good Poor
Sat 23:00 0.72 · high 6.06 · high 27.90 · good Poor
Sun 00:00 0.72 · high 6.40 · high 27.90 · good Poor
Sun 01:00 0.72 · high 6.01 · high 27.90 · good Poor
Sun 02:00 0.70 · high 5.76 · high 27.90 · good Poor
Sun 03:00 0.70 · high 5.41 · high 27.90 · good Poor
Sun 04:00 0.68 · high 5.45 · high 27.90 · good Poor
Sun 05:00 0.64 · high 5.26 · good 27.90 · good Poor
Sun 06:00 0.62 · high 4.80 · good 27.90 · good Poor
Sun 07:00 0.66 · high 4.94 · good 27.90 · good Poor
Sun 08:00 0.66 · high 4.89 · good 27.90 · good Poor
Sun 09:00 0.66 · high 5.51 · high 27.90 · good Fair
Sun 10:00 0.66 · high 5.58 · high 28.00 · good Fair
Sun 11:00 0.64 · high 5.25 · good 28.00 · good Fair
Sun 12:00 0.64 · high 5.05 · good 28.10 · good Fair
Sun 13:00 0.60 · high 4.62 · good 28.20 · good Fair
Sun 14:00 0.58 · high 4.33 · good 28.20 · good Good
Sun 15:00 0.54 · high 4.19 · good 28.30 · good Good
Sun 16:00 0.52 · high 4.90 · good 28.30 · good Fair
Sun 17:00 0.50 · high 4.66 · good 28.20 · good Good
Sun 18:00 0.48 · high 3.79 · good 28.20 · good Poor
Sun 19:00 0.50 · high 3.20 · good 28.00 · good Poor
Sun 20:00 0.50 · high 3.09 · good 28.00 · good Poor
Sun 21:00 0.48 · high 2.97 · good 27.90 · good Poor
Sun 22:00 0.48 · high 2.84 · good 27.90 · good Poor
Sun 23:00 0.46 · high 3.21 · good 27.90 · good Poor
Mon 00:00 0.46 · high 2.92 · good 27.90 · good Poor
Mon 01:00 0.44 · high 2.69 · good 27.80 · good Poor
Mon 02:00 0.44 · high 2.16 · good 27.80 · good Poor
Mon 03:00 0.42 · high 2.26 · good 27.80 · good Poor
Mon 04:00 0.42 · high 1.92 · good 27.80 · good Poor
Mon 05:00 0.40 · high 1.65 · good 27.80 · good Poor
Mon 06:00 0.40 · high 1.64 · good 27.80 · good Poor
Mon 07:00 0.40 · high 1.98 · good 27.80 · good Poor
Mon 08:00 0.40 · high 3.16 · good 27.80 · good Poor