SnorkelForecast.com

Okinawa - Blue Cave Snorkel Report Today

Japan · Updated Tue 03:13 (JST) · Source: Snapshot · Showing fallback/stale data

The skinny

Go in the best window Report Thu 05:33

Okinawa - Blue Cave has a usable snorkeling window around Thu 09:00. The main thing to watch is tide/current.

Score: 8.1/10

Best time: Thu 09:00

Main risk: Tide/Current

Best morning signal: Thu 11:00 (Excellent).

Best afternoon signal: Thu 16:00 (Excellent). Peak afternoon wind is about 1.9 m/s.

Email me when it is good

Sunrise

05:48

Sunset

19:21

Water

29.6°C

Max air

32.4°C

Sky

Clear

3% cloud

Good window is available today

Next safe window: Thu 00:00–10:00 (47% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Thursday

✅ excellent conditions

Main blocker: Tide/current

Friday

✅ good conditions

Main blocker: Tide/current

Best available hours

Next safe window starts at Thu 00:00 until 10:00.

Why this verdict

Main blockers across the next 72 hours:

  • Tide/current (25 hours)
  • Darkness (16 hours)

Jellyfish drift risk

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

Low · 31/100

Low peak drift risk around Thu 09:00.

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 17:00

Thu 06:00, Thu 17:00

Nearby alternatives in Japan

Kerama Islands

56 km away

✅ Good

Miyako

314 km away

✅ Good

Ishigaki

438 km away

✅ Good

Advanced forecast data

Viewing historical data

Sun 20:00 – Wed 20:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.26 around Mon 19:00; 0 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 0.74m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 7.2 to 13.8m/s).

Tides range from -0.04m to 1.6m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
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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 and safety gate (outside daylight scores lower).
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Sun 20:00 0.74 · high 11.40 · high 26.60 · good poor
Sun 21:00 0.72 · high 11.20 · high 26.60 · good poor
Sun 22:00 0.70 · high 10.70 · high 26.60 · good poor
Sun 23:00 0.68 · high 10.60 · high 26.70 · good poor
Mon 00:00 0.66 · high 12.30 · high 26.70 · good poor
Mon 01:00 0.66 · high 13.10 · high 26.70 · good poor
Mon 02:00 0.64 · high 13.40 · high 26.70 · good poor
Mon 03:00 0.64 · high 13.80 · high 26.80 · good poor
Mon 04:00 0.64 · high 13.30 · high 26.80 · good poor
Mon 05:00 0.62 · high 12.20 · high 26.80 · good poor
Mon 06:00 0.62 · high 9.40 · high 26.80 · good poor
Mon 07:00 0.60 · high 7.80 · high 26.80 · good poor
Mon 08:00 0.60 · high 7.20 · high 26.80 · good poor
Mon 09:00 0.58 · high 8.10 · high 26.80 · good poor
Mon 10:00 0.56 · high 7.40 · high 26.80 · good poor
Mon 11:00 0.54 · high 9.20 · high 26.80 · good poor
Mon 12:00 0.52 · high 8.80 · high 26.80 · good poor
Mon 13:00 0.50 · high 8.20 · high 26.80 · good poor
Mon 14:00 0.48 · high 9.80 · high 26.80 · good poor
Mon 15:00 0.46 · high 10.60 · high 26.80 · good poor
Mon 16:00 0.44 · high 9.40 · high 26.80 · good poor
Mon 17:00 0.44 · high 10.00 · high 26.80 · good poor
Mon 18:00 0.42 · high 11.00 · high 26.80 · good poor
Mon 19:00 0.42 · high 9.80 · high 26.80 · good poor
Mon 20:00 0.40 · high 8.90 · high 26.80 · good poor
Mon 21:00 0.40 · high 9.60 · high 26.80 · good poor
Mon 22:00 0.40 · high 10.90 · high 26.80 · good poor
Mon 23:00 0.38 · high 10.00 · high 26.80 · good poor
Tue 00:00 0.38 · high 11.30 · high 26.80 · good poor
Tue 01:00 0.38 · high 12.10 · high 26.90 · good poor
Tue 02:00 0.38 · high 11.80 · high 27.10 · good poor
Tue 03:00 0.38 · high 13.10 · high 27.20 · good poor
Tue 04:00 0.40 · high 11.80 · high 27.40 · good poor
Tue 05:00 0.40 · high 11.50 · high 27.50 · good poor
Tue 06:00 0.42 · high 12.10 · high 27.60 · good poor
Tue 07:00 0.42 · high 13.00 · high 27.60 · good poor
Tue 08:00 0.42 · high 13.10 · high 27.50 · good poor
Tue 09:00 0.42 · high 11.90 · high 27.50 · good poor
Tue 10:00 0.42 · high 11.40 · high 27.40 · good poor
Tue 11:00 0.42 · high 9.10 · high 27.70 · good poor
Tue 12:00 0.42 · high 8.80 · high 27.60 · good poor
Tue 13:00 0.42 · high 10.60 · high 27.60 · good poor
Tue 14:00 0.42 · high 12.00 · high 27.60 · good poor
Tue 15:00 0.42 · high 10.70 · high 27.50 · good poor
Tue 16:00 0.42 · high 11.90 · high 27.50 · good poor
Tue 17:00 0.42 · high 12.60 · high 27.40 · good poor
Tue 18:00 0.42 · high 11.70 · high 27.40 · good poor
Tue 19:00 0.42 · high 11.20 · high 27.30 · good poor
Tue 20:00 0.40 · high 11.50 · high 27.30 · good poor
Tue 21:00 0.40 · high 11.20 · high 27.30 · good poor
Tue 22:00 0.40 · high 11.00 · high 27.30 · good poor
Tue 23:00 0.40 · high 11.50 · high 27.30 · good poor
Wed 00:00 0.40 · high 12.70 · high 27.30 · good poor
Wed 01:00 0.40 · high 13.10 · high 27.30 · good fair
Wed 02:00 0.42 · high 12.80 · high 27.40 · good poor
Wed 03:00 0.42 · high 13.80 · high 27.50 · good poor
Wed 04:00 0.42 · high 14.80 · high 27.60 · good poor
Wed 05:00 0.44 · high 14.70 · high 27.60 · good poor
Wed 06:00 0.44 · high 13.80 · high 27.70 · good poor
Wed 07:00 0.44 · high 13.40 · high 27.70 · good poor
Wed 08:00 0.44 · high 13.20 · high 27.70 · good poor
Wed 09:00 0.44 · high 13.90 · high 27.70 · good poor
Wed 10:00 0.44 · high 11.40 · high 27.60 · good poor
Wed 11:00 0.42 · high 9.50 · high 27.60 · good poor
Wed 12:00 0.42 · high 9.50 · high 27.60 · good poor
Wed 13:00 0.44 · high 10.20 · high 27.60 · good poor
Wed 14:00 0.46 · high 9.80 · high 27.50 · good poor
Wed 15:00 0.48 · high 9.90 · high 27.50 · good poor
Wed 16:00 0.50 · high 11.50 · high 27.50 · good poor
Wed 17:00 0.50 · high 13.70 · high 27.50 · good poor
Wed 18:00 0.52 · high 15.20 · high 27.50 · good poor
Wed 19:00 0.54 · high 14.90 · high 27.50 · good poor