MARINE REPORT / 72 HOURS

Okinawa - Blue Cave Snorkel Report Today

Japan · Updated Mon 04:28 (JST) · Source: Snapshot

The skinny

Go in the best window Data updated Mon 04:28 (JST)

Okinawa - Blue Cave has a usable snorkeling window around Mon 09:00. The main thing to watch is waves.

Right now (forecast)

Poor · 0.0/10

Mon 06:00 (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 09:00

Main risk: Waves

Best morning signal: Mon 09:00 (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

17:58

Water

27.8°C

Max air

29.4°C

Sky

Clear

13% cloud

Good model window in the next 72 hours

Next good model window: Mon 09:00–13:00 (12% 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 09:00 and lasts until 13:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (69 hours)
  • Tide/current (55 hours)
  • Darkness (42 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

Nearby alternatives in Japan

Kerama Islands

56 km away

❌ Poor

Miyako

314 km away

❌ Poor

Ishigaki

438 km away

❌ Poor

Advanced forecast data

Viewing current forecast

Mon 06:00 – Thu 06:00 (JST)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.65 around Mon 13:00; 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 0.4m to 0.46m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 2.18 to 4.33m/s).

Tides range from 0.55m to 1.26m; 2 of 24 hours are in or near peak slack windows.

72-hour forecast overview
Poor ❌ Limited
Poor ❌ Limited
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
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
Poor ❌ Limited
Good 🌟 Good
Good 🌟 Good
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
Poor ❌ Limited
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
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 07:00 0.44 · high 3.60 · good 27.80 · good Poor
Mon 08:00 0.44 · high 3.51 · good 27.80 · good Poor
Mon 09:00 0.42 · high 3.48 · good 27.80 · good Good
Mon 10:00 0.42 · high 3.76 · good 27.90 · good Good
Mon 11:00 0.40 · high 4.33 · good 28.00 · good Good
Mon 12:00 0.40 · high 4.23 · good 28.10 · good Good
Mon 13:00 0.40 · high 4.10 · good 28.20 · good Good
Mon 14:00 0.42 · high 3.82 · good 28.30 · good Fair
Mon 15:00 0.42 · high 3.78 · good 28.40 · good Fair
Mon 16:00 0.42 · high 3.85 · good 28.40 · good Fair
Mon 17:00 0.44 · high 3.66 · good 28.30 · good Good
Mon 18:00 0.44 · high 3.03 · good 28.20 · good Poor
Mon 19:00 0.44 · high 2.80 · good 28.10 · good Poor
Mon 20:00 0.46 · high 2.55 · good 28.00 · good Poor
Mon 21:00 0.46 · high 2.51 · good 28.00 · good Poor
Mon 22:00 0.46 · high 2.38 · good 27.90 · good Poor
Mon 23:00 0.44 · high 2.27 · good 27.90 · good Poor
Tue 00:00 0.44 · high 2.40 · good 27.90 · good Poor
Tue 01:00 0.44 · high 2.18 · good 27.90 · good Poor
Tue 02:00 0.42 · high 2.73 · good 27.90 · good Poor
Tue 03:00 0.42 · high 2.73 · good 27.90 · good Poor
Tue 04:00 0.44 · high 2.80 · good 27.90 · good Poor
Tue 05:00 0.44 · high 2.91 · good 27.80 · good Poor
Tue 06:00 0.46 · high 2.93 · good 27.80 · good Poor
Tue 07:00 0.46 · high 3.13 · good 27.80 · good Poor
Tue 08:00 0.48 · high 3.46 · good 27.80 · good Poor
Tue 09:00 0.48 · high 3.81 · good 27.90 · good Good
Tue 10:00 0.48 · high 3.95 · good 27.90 · good Good
Tue 11:00 0.50 · high 3.87 · good 28.10 · good Fair
Tue 12:00 0.50 · high 3.67 · good 28.20 · good Fair
Tue 13:00 0.50 · high 3.63 · good 28.30 · good Fair
Tue 14:00 0.48 · high 3.76 · good 28.40 · good Fair
Tue 15:00 0.48 · high 4.29 · good 28.40 · good Fair
Tue 16:00 0.48 · high 4.60 · good 28.40 · good Fair
Tue 17:00 0.48 · high 4.30 · good 28.30 · good Fair
Tue 18:00 0.48 · high 3.88 · good 28.20 · good Poor
Tue 19:00 0.48 · high 3.76 · good 28.10 · good Poor
Tue 20:00 0.50 · high 3.67 · good 28.00 · good Poor
Tue 21:00 0.50 · high 3.38 · good 28.00 · good Poor
Tue 22:00 0.50 · high 3.37 · good 27.90 · good Poor
Tue 23:00 0.52 · high 3.63 · good 27.90 · good Poor
Wed 00:00 0.52 · high 3.74 · good 27.90 · good Poor
Wed 01:00 0.52 · high 3.53 · good 27.90 · good Poor
Wed 02:00 0.52 · high 3.49 · good 27.90 · good Poor
Wed 03:00 0.52 · high 3.42 · good 27.90 · good Poor
Wed 04:00 0.54 · high 3.52 · good 27.90 · good Poor
Wed 05:00 0.56 · high 3.67 · good 27.90 · good Poor
Wed 06:00 0.58 · high 3.75 · good 27.90 · good Poor
Wed 07:00 0.60 · high 3.88 · good 27.90 · good Poor
Wed 08:00 0.60 · high 3.88 · good 27.90 · good Poor
Wed 09:00 0.62 · high 4.37 · good 27.90 · good Fair
Wed 10:00 0.64 · high 4.58 · good 27.90 · good Fair
Wed 11:00 0.64 · high 4.75 · good 27.90 · good Poor
Wed 12:00 0.66 · high 4.76 · good 28.00 · good Poor
Wed 13:00 0.70 · high 5.27 · good 28.00 · good Poor
Wed 14:00 0.76 · high 4.99 · good 28.00 · good Poor
Wed 15:00 0.80 · high 5.60 · high 28.00 · good Poor
Wed 16:00 0.86 · high 6.42 · high 28.00 · good Poor
Wed 17:00 0.92 · high 6.63 · high 28.00 · good Poor
Wed 18:00 0.98 · high 6.21 · high 28.00 · good Poor
Wed 19:00 1.04 · high 6.53 · high 28.00 · good Poor
Wed 20:00 1.08 · high 6.59 · high 27.90 · good Poor
Wed 21:00 1.14 · high 6.20 · high 27.90 · good Poor
Wed 22:00 1.18 · high 6.54 · high 27.90 · good Poor
Wed 23:00 1.22 · high 6.38 · high 27.90 · good Poor
Thu 00:00 1.26 · high 6.77 · high 27.90 · good Poor
Thu 01:00 1.32 · high 6.95 · high 27.90 · good Poor
Thu 02:00 1.36 · high 6.76 · high 27.80 · good Poor
Thu 03:00 1.42 · high 6.54 · high 27.80 · good Poor