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 Wed 14:46

Okinawa - Blue Cave has a usable snorkeling window around Wed 15:00. The main thing to watch is tide/current.

Score: 7.8/10

Best time: Wed 15:00

Main risk: Tide/Current

No useful morning window is showing yet.

Best afternoon signal: Wed 18:00 (Excellent). Peak afternoon wind is about 2.5 m/s.

Email me when it is good

Sunrise

05:48

Sunset

19:21

Water

30.3°C

Max air

29.3°C

Sky

Cloudy

99% cloud

Good window is available today

Next safe window: Wed 06:00–10:00 (42% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Wednesday

✅ excellent conditions

Main blocker: Darkness

Thursday

✅ excellent conditions

Main blocker: Tide/current

Friday

✅ good conditions

Main blocker: Tide/current

Best available hours

Next safe window starts at Wed 06:00 until 10:00.

Why this verdict

Main blockers across the next 72 hours:

  • Tide/current (28 hours)
  • Darkness (26 hours)
  • Waves (2 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: Wed 16:00

Wed 16:00, 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

Wed 05:00 – Sat 05:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.29 around Wed 16:00; 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 0.58m to 1.1m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 15.2 to 31.2m/s).

Tides range from 0.47m to 1.62m; 1 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
Wed 05:00 0.58 · high 16.00 · high 29.20 · good poor
Wed 06:00 0.62 · high 16.80 · high 29.20 · good poor
Wed 07:00 0.64 · high 19.40 · high 29.20 · good poor
Wed 08:00 0.68 · high 19.10 · high 29.20 · good poor
Wed 09:00 0.70 · high 18.90 · high 29.10 · good poor
Wed 10:00 0.72 · high 16.60 · high 29.00 · good poor
Wed 11:00 0.72 · high 15.20 · high 28.90 · good poor
Wed 12:00 0.74 · high 16.50 · high 28.90 · good poor
Wed 13:00 0.76 · high 17.80 · high 28.80 · good poor
Wed 14:00 0.78 · high 20.10 · high 28.70 · good poor
Wed 15:00 0.80 · high 19.40 · high 28.60 · good poor
Wed 16:00 0.80 · high 18.10 · high 28.60 · good poor
Wed 17:00 0.82 · high 17.00 · high 28.50 · good poor
Wed 18:00 0.82 · high 17.40 · high 28.40 · good poor
Wed 19:00 0.84 · high 16.80 · high 28.40 · good poor
Wed 20:00 0.84 · high 17.60 · high 28.30 · good poor
Wed 21:00 0.86 · high 18.20 · high 28.30 · good poor
Wed 22:00 0.90 · high 18.00 · high 28.20 · good poor
Wed 23:00 0.94 · high 24.00 · high 28.20 · good poor
Thu 00:00 0.98 · high 25.50 · high 28.20 · good poor
Thu 01:00 1.00 · high 27.80 · high 28.10 · good poor
Thu 02:00 1.04 · high 28.70 · high 28.10 · good poor
Thu 03:00 1.06 · high 31.20 · high 28.10 · good poor
Thu 04:00 1.10 · high 31.00 · high 28.10 · good poor
Thu 05:00 1.12 · high 31.40 · high 28.10 · good poor
Thu 06:00 1.16 · high 29.50 · high 28.00 · good poor
Thu 07:00 1.18 · high 31.00 · high 28.00 · good poor
Thu 08:00 1.06 · high 8.61 · high 28.30 · good poor
Thu 09:00 1.06 · high 8.87 · high 28.20 · good poor
Thu 10:00 1.08 · high 8.36 · high 28.10 · good poor
Thu 11:00 1.10 · high 8.86 · high 28.10 · good poor
Thu 12:00 1.12 · high 8.59 · high 28.00 · good poor
Thu 13:00 1.14 · high 8.57 · high 28.00 · good poor
Thu 14:00 1.18 · high 8.20 · high 27.90 · good poor
Thu 15:00 1.20 · high 8.60 · high 27.90 · good poor
Thu 16:00 1.24 · high 8.30 · high 27.90 · good poor
Thu 17:00 1.28 · high 8.20 · high 27.90 · good poor
Thu 18:00 1.32 · high 9.11 · high 27.80 · good poor
Thu 19:00 1.36 · high 9.33 · high 27.80 · good poor
Thu 20:00 1.42 · high 9.57 · high 27.70 · good poor
Thu 21:00 1.46 · high 10.68 · high 27.70 · good poor
Thu 22:00 1.52 · high 11.16 · high 27.70 · good poor
Thu 23:00 1.56 · high 11.31 · high 27.60 · good poor
Fri 00:00 1.62 · high 9.84 · high 27.60 · good poor
Fri 01:00 1.70 · high 10.82 · high 27.50 · good poor
Fri 02:00 1.80 · high 12.10 · high 27.50 · good poor
Fri 03:00 1.88 · high 12.30 · high 27.40 · good poor
Fri 04:00 1.94 · high 13.49 · high 27.40 · good poor
Fri 05:00 1.98 · high 11.35 · high 27.30 · good poor
Fri 06:00 2.04 · high 14.33 · high 27.30 · good poor
Fri 07:00 2.12 · high 14.62 · high 27.20 · good poor
Fri 08:00 2.20 · high 15.28 · high 27.10 · good poor
Fri 09:00 2.28 · high 14.27 · high 27.00 · good poor
Fri 10:00 2.36 · high 14.70 · high 27.00 · good poor
Fri 11:00 2.42 · high 15.24 · high 26.90 · good poor
Fri 12:00 2.50 · high 15.44 · high 26.90 · good poor
Fri 13:00 2.48 · high 16.55 · high 26.90 · good poor
Fri 14:00 2.48 · high 16.80 · high 26.90 · good poor
Fri 15:00 2.46 · high 16.28 · high 26.90 · good poor
Fri 16:00 2.44 · high 16.51 · high 26.90 · good poor
Fri 17:00 2.40 · high 16.52 · high 27.00 · good poor
Fri 18:00 2.38 · high 16.65 · high 27.00 · good poor
Fri 19:00 2.36 · high 16.36 · high 27.10 · good poor
Fri 20:00 2.36 · high 16.77 · high 27.30 · good poor
Fri 21:00 2.34 · high 16.42 · high 27.40 · good poor
Fri 22:00 2.32 · high 15.84 · high 27.60 · good poor
Fri 23:00 2.30 · high 16.06 · high 27.70 · good poor
Sat 00:00 2.28 · high 14.18 · high 27.80 · good poor
Sat 01:00 2.24 · high 14.50 · high 27.90 · good poor
Sat 02:00 2.20 · high 12.71 · high 28.00 · good poor
Sat 03:00 2.16 · high 13.51 · high 28.00 · good poor
Sat 04:00 2.14 · high 13.44 · high 28.10 · good poor