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 14:42

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

Score: 8.1/10

Best time: Thu 15:00

Main risk: Tide/Current

No useful morning window is showing yet.

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

Email me when it is good

Sunrise

05:49

Sunset

19:21

Water

30.4°C

Max air

30.8°C

Sky

Partly cloudy

46% cloud

Good window is available today

Next safe window: Thu 06:00–10:00 (38% 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 06:00 until 10:00.

Why this verdict

Main blockers across the next 72 hours:

  • Tide/current (17 hours)
  • Darkness (13 hours)

Jellyfish drift risk

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

Low · 31/100

Low peak drift risk around Fri 06:00.

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

Wed 05:00 – Sat 05:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.0 around Wed 14:00; 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 0.7m to 2.04m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 9.0 to 38.6m/s).

Tides range from 0.4m to 1.55m; 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
Wed 05:00 0.72 · high 14.80 · high 27.80 · good poor
Wed 06:00 0.72 · high 15.70 · high 27.90 · good poor
Wed 07:00 0.72 · high 16.10 · high 27.90 · good poor
Wed 08:00 0.72 · high 15.60 · high 27.90 · good poor
Wed 09:00 0.72 · high 10.30 · high 27.90 · good poor
Wed 10:00 0.72 · high 9.00 · high 27.80 · good poor
Wed 11:00 0.70 · high 11.60 · high 27.80 · good poor
Wed 12:00 0.70 · high 11.20 · high 27.80 · good poor
Wed 13:00 0.98 · high 23.10 · high 27.80 · good poor
Wed 14:00 1.00 · high 23.80 · high 27.80 · good poor
Wed 15:00 1.02 · high 23.60 · high 27.70 · good poor
Wed 16:00 1.08 · high 25.60 · high 27.70 · good poor
Wed 17:00 1.12 · high 27.80 · high 27.70 · good poor
Wed 18:00 1.18 · high 30.20 · high 27.70 · good poor
Wed 19:00 1.24 · high 31.10 · high 27.70 · good poor
Wed 20:00 1.28 · high 30.40 · high 27.70 · good poor
Wed 21:00 1.34 · high 32.70 · high 27.70 · good poor
Wed 22:00 1.42 · high 32.20 · high 27.70 · good poor
Wed 23:00 1.50 · high 30.00 · high 27.70 · good poor
Thu 00:00 1.58 · high 34.50 · high 27.70 · good poor
Thu 01:00 1.70 · high 36.40 · high 27.80 · good poor
Thu 02:00 1.82 · high 35.60 · high 27.90 · good poor
Thu 03:00 1.94 · high 38.60 · high 28.00 · good poor
Thu 04:00 2.04 · high 38.00 · high 28.10 · good poor
Thu 05:00 2.12 · high 36.30 · high 28.10 · good poor
Thu 06:00 2.22 · high 37.90 · high 28.20 · good poor
Thu 07:00 2.40 · high 41.60 · high 28.20 · good poor
Thu 08:00 2.58 · high 42.80 · high 28.20 · good poor
Thu 09:00 2.76 · high 48.30 · high 28.10 · good poor
Thu 10:00 2.82 · high 53.40 · high 28.10 · good poor
Thu 11:00 2.88 · high 57.10 · high 28.00 · good poor
Thu 12:00 2.94 · high 58.30 · high 28.00 · good poor
Thu 13:00 2.98 · high 54.60 · high 27.90 · good poor
Thu 14:00 3.02 · high 49.70 · high 27.90 · good poor
Thu 15:00 3.06 · high 49.10 · high 27.90 · good poor
Thu 16:00 2.88 · high 48.50 · high 27.80 · good poor
Thu 17:00 2.68 · high 43.60 · high 27.80 · good poor
Thu 18:00 2.50 · high 40.90 · high 27.80 · good poor
Thu 19:00 2.32 · high 37.60 · high 27.80 · good poor
Thu 20:00 2.14 · high 35.00 · high 27.80 · good poor
Thu 21:00 1.96 · high 32.00 · high 27.80 · good poor
Thu 22:00 1.86 · high 27.70 · high 27.80 · good poor
Thu 23:00 1.74 · high 27.40 · high 27.80 · good poor
Fri 00:00 1.64 · high 21.50 · high 27.80 · good poor
Fri 01:00 1.58 · high 23.20 · high 27.80 · good poor
Fri 02:00 1.50 · high 20.90 · high 27.80 · good poor
Fri 03:00 1.44 · high 17.00 · high 27.90 · good poor
Fri 04:00 1.40 · high 21.40 · high 27.90 · good poor
Fri 05:00 1.36 · high 21.80 · high 27.90 · good poor
Fri 06:00 1.32 · high 22.60 · high 27.90 · good poor
Fri 07:00 1.30 · high 21.10 · high 27.90 · good poor
Fri 08:00 1.28 · high 19.80 · high 27.90 · good poor
Fri 09:00 1.26 · high 17.60 · high 27.90 · good poor
Fri 10:00 1.22 · high 13.50 · high 27.90 · good poor
Fri 11:00 1.20 · high 15.90 · high 27.80 · good poor
Fri 12:00 1.16 · high 12.40 · high 27.80 · good poor
Fri 13:00 1.14 · high 7.30 · high 27.80 · good poor
Fri 14:00 1.10 · high 4.50 · good 27.80 · good poor
Fri 15:00 1.08 · high 5.80 · high 27.70 · good poor
Fri 16:00 1.06 · high 9.30 · high 27.70 · good poor
Fri 17:00 1.06 · high 7.00 · high 27.70 · good poor
Fri 18:00 1.04 · high 4.20 · good 27.70 · good poor
Fri 19:00 1.02 · high 5.50 · high 27.70 · good poor
Fri 20:00 1.00 · high 6.00 · high 27.60 · good poor
Fri 21:00 0.98 · high 3.10 · good 27.60 · good poor
Fri 22:00 0.98 · high 2.70 · good 27.60 · good poor
Fri 23:00 0.96 · high 2.80 · good 27.60 · good poor
Sat 00:00 0.96 · high 15.00 · high 27.60 · good poor
Sat 01:00 0.94 · high 14.00 · high 27.70 · good poor
Sat 02:00 0.94 · high 12.80 · high 27.70 · good poor
Sat 03:00 0.92 · high 9.80 · high 27.80 · good poor
Sat 04:00 0.90 · high 10.20 · high 27.80 · good poor