SnorkelForecast.com

Okinawa - Blue Cave Snorkel Report Today

Japan · Updated Tue 03:13 (JST) · Source: Snapshot

The skinny

Go in the best window Report Wed 11:22

Okinawa - Blue Cave has a usable snorkeling window around Wed 12:00. The main thing to watch is tide/current.

Score: 7.7/10

Best time: Wed 12:00

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

29.9°C

Max air

30.9°C

Sky

Partly cloudy

39% cloud

Good window is available today

Next safe window: Wed 03:00–10:00 (46% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Wednesday

✅ excellent conditions

Main blocker: Waves

Thursday

✅ excellent conditions

Main blocker: Tide/current

Friday

✅ good conditions

Main blocker: Tide/current

Best available hours

Next safe window starts at Wed 03:00 until 10:00.

Why this verdict

Main blockers across the next 72 hours:

  • Tide/current (28 hours)
  • Darkness (26 hours)
  • Waves (5 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 04:00, 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

Fri 02:00 – Mon 02:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.17 around Fri 17:00; 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 1.8m to 2.5m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 11.35 to 16.8m/s).

Tides range from 0.24m to 1.78m; 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
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
Sat 05:00 2.10 · high 13.77 · high 28.10 · good poor
Sat 06:00 2.08 · high 13.44 · high 28.20 · good poor
Sat 07:00 2.00 · high 13.15 · high 28.20 · good poor
Sat 08:00 1.92 · high 12.74 · high 28.20 · good poor
Sat 09:00 1.84 · high 12.46 · high 28.30 · good poor
Sat 10:00 1.78 · high 11.62 · high 28.30 · good poor
Sat 11:00 1.74 · high 11.25 · high 28.30 · good poor
Sat 12:00 1.68 · high 10.71 · high 28.30 · good poor
Sat 13:00 1.64 · high 10.47 · high 28.30 · good poor
Sat 14:00 1.62 · high 9.93 · high 28.30 · good poor
Sat 15:00 1.58 · high 10.33 · high 28.30 · good poor
Sat 16:00 1.58 · high 10.18 · high 28.20 · good poor
Sat 17:00 1.56 · high 10.03 · high 28.20 · good poor
Sat 18:00 1.56 · high 9.78 · high 28.20 · good poor
Sat 19:00 1.52 · high 8.84 · high 28.20 · good poor
Sat 20:00 1.50 · high 8.30 · high 28.20 · good poor
Sat 21:00 1.46 · high 8.07 · high 28.20 · good poor
Sat 22:00 1.44 · high 7.98 · high 28.20 · good poor
Sat 23:00 1.40 · high 7.61 · high 28.20 · good poor
Sun 00:00 1.38 · high 7.64 · high 28.20 · good poor
Sun 01:00 1.34 · high 7.64 · high 28.30 · good poor
Sun 02:00 1.30 · high 7.42 · high 28.30 · good fair
Sun 03:00 1.26 · high 7.34 · high 28.40 · good poor
Sun 04:00 1.22 · high 6.90 · high 28.50 · good poor
Sun 05:00 1.18 · high 6.70 · high 28.60 · good fair
Sun 06:00 1.14 · high 6.88 · high 28.60 · good fair
Sun 07:00 1.46 · high 7.77 · high 27.40 · good poor
Sun 08:00 1.40 · high 7.44 · high 27.30 · good poor
Sun 09:00 1.36 · high 7.20 · high 27.30 · good poor
Sun 10:00 1.32 · high 6.49 · high 27.30 · good poor
Sun 11:00 1.28 · high 6.47 · high 27.30 · good poor
Sun 12:00 1.24 · high 6.62 · high 27.30 · good poor
Sun 13:00 1.22 · high 6.75 · high 27.30 · good poor
Sun 14:00 1.20 · high 6.69 · high 27.30 · good poor
Sun 15:00 1.18 · high 6.73 · high 27.30 · good poor
Sun 16:00 1.16 · high 7.27 · high 27.30 · good poor
Sun 17:00 1.16 · high 6.89 · high 27.30 · good poor
Sun 18:00 1.14 · high 6.45 · high 27.30 · good poor
Sun 19:00 1.10 · high 6.20 · high 27.30 · good poor
Sun 20:00 1.06 · high 5.97 · high 27.30 · good poor
Sun 21:00 1.02 · high 5.82 · high 27.30 · good poor
Sun 22:00 1.00 · high 5.91 · high 27.20 · good poor
Sun 23:00 0.98 · high 5.89 · high 27.30 · good poor
Mon 00:00 0.96 · high 5.81 · high 27.30 · good fair
Mon 01:00 0.96 · high 6.07 · high 27.30 · good fair