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 03:29

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

Score: 7.2/10

Best time: Wed 09:00

Main risk: Tide/Current

Best morning signal: Wed 09:00 (Good).

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

29.4°C

Max air

30.9°C

Sky

Clear

9% cloud

Good window is available today

Next safe window: Wed 00:00–10:00 (45% 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 00:00 until 10:00.

Why this verdict

Main blockers across the next 72 hours:

  • Tide/current (35 hours)
  • Darkness (31 hours)
  • Waves (13 hours)

Jellyfish drift risk

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

Low · 28/100

Low drift risk now.

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

Mon 18:00 – Thu 18:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.41 around Tue 09:00; 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 0.56m to 0.72m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 2.91 to 4.79m/s).

Tides range from -0.23m to 1.94m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
poor ❌ Limited
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fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
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fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
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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
Mon 18:00 0.72 · high 4.17 · good 27.40 · good poor
Mon 19:00 0.72 · high 4.58 · good 27.40 · good poor
Mon 20:00 0.72 · high 4.69 · good 27.40 · good poor
Mon 21:00 0.72 · high 4.79 · good 27.40 · good poor
Mon 22:00 0.70 · high 4.78 · good 27.40 · good poor
Mon 23:00 0.70 · high 4.46 · good 27.40 · good poor
Tue 00:00 0.68 · high 4.37 · good 27.40 · good fair
Tue 01:00 0.66 · high 4.06 · good 27.50 · good fair
Tue 02:00 0.66 · high 3.80 · good 27.60 · good poor
Tue 03:00 0.64 · high 3.48 · good 27.80 · good poor
Tue 04:00 0.62 · high 3.36 · good 27.90 · good fair
Tue 05:00 0.62 · high 3.13 · good 28.00 · good fair
Tue 06:00 0.60 · high 2.96 · good 28.10 · good fair
Tue 07:00 0.60 · high 2.91 · good 28.10 · good fair
Tue 08:00 0.58 · high 3.35 · good 28.00 · good fair
Tue 09:00 0.58 · high 3.91 · good 28.00 · good fair
Tue 10:00 0.58 · high 4.02 · good 27.90 · good fair
Tue 11:00 0.56 · high 3.61 · good 27.80 · good poor
Tue 12:00 0.56 · high 3.58 · good 27.80 · good poor
Tue 13:00 0.58 · high 3.42 · good 27.70 · good poor
Tue 14:00 0.60 · high 3.56 · good 27.70 · good poor
Tue 15:00 0.62 · high 3.49 · good 27.60 · good poor
Tue 16:00 0.64 · high 3.20 · good 27.60 · good poor
Tue 17:00 0.68 · high 3.38 · good 27.60 · good poor
Tue 18:00 0.70 · high 3.49 · good 27.50 · good poor
Tue 19:00 0.70 · high 3.65 · good 27.50 · good poor
Tue 20:00 0.72 · high 4.08 · good 27.50 · good poor
Tue 21:00 0.72 · high 4.11 · good 27.50 · good poor
Tue 22:00 0.72 · high 4.24 · good 27.50 · good poor
Tue 23:00 0.70 · high 4.50 · good 27.50 · good poor
Wed 00:00 0.70 · high 4.17 · good 27.50 · good poor
Wed 01:00 0.70 · high 3.72 · good 27.50 · good poor
Wed 02:00 0.72 · high 5.10 · good 27.60 · good poor
Wed 03:00 0.72 · high 4.75 · good 27.60 · good poor
Wed 04:00 0.72 · high 4.94 · good 27.70 · good poor
Wed 05:00 0.72 · high 4.87 · good 27.70 · good poor
Wed 06:00 0.70 · high 4.73 · good 27.90 · good poor
Wed 07:00 0.70 · high 4.47 · good 27.90 · good poor
Wed 08:00 0.70 · high 4.47 · good 27.90 · good poor
Wed 09:00 0.70 · high 4.34 · good 27.90 · good poor
Wed 10:00 0.68 · high 4.23 · good 27.80 · good poor
Wed 11:00 0.68 · high 3.74 · good 27.80 · good poor
Wed 12:00 0.66 · high 3.70 · good 27.70 · good poor
Wed 13:00 0.66 · high 4.01 · good 27.70 · good poor
Wed 14:00 0.66 · high 4.05 · good 27.70 · good poor
Wed 15:00 0.66 · high 4.09 · good 27.60 · good poor
Wed 16:00 0.66 · high 4.41 · good 27.60 · good poor
Wed 17:00 0.68 · high 4.83 · good 27.60 · good poor
Wed 18:00 0.68 · high 4.81 · good 27.60 · good poor
Wed 19:00 0.70 · high 4.69 · good 27.60 · good poor
Wed 20:00 0.70 · high 4.95 · good 27.50 · good poor
Wed 21:00 0.72 · high 4.87 · good 27.50 · good poor
Wed 22:00 0.72 · high 4.94 · good 27.50 · good poor
Wed 23:00 0.72 · high 4.64 · good 27.50 · good poor
Thu 00:00 0.72 · high 4.92 · good 27.60 · good poor
Thu 01:00 0.70 · high 4.77 · good 27.60 · good poor
Thu 02:00 0.70 · high 4.61 · good 27.70 · good poor
Thu 03:00 0.68 · high 4.55 · good 27.80 · good poor
Thu 04:00 0.68 · high 4.31 · good 27.90 · good poor
Thu 05:00 0.66 · high 4.34 · good 28.00 · good poor
Thu 06:00 0.66 · high 4.38 · good 28.10 · good poor
Thu 07:00 0.66 · high 4.57 · good 28.10 · good poor
Thu 08:00 0.66 · high 4.73 · good 28.00 · good poor
Thu 09:00 0.66 · high 4.85 · good 28.00 · good poor
Thu 10:00 0.68 · high 4.81 · good 27.90 · good poor
Thu 11:00 0.70 · high 4.41 · good 27.90 · good poor
Thu 12:00 0.72 · high 4.07 · good 27.80 · good poor
Thu 13:00 0.74 · high 3.95 · good 27.80 · good poor
Thu 14:00 0.76 · high 3.99 · good 27.80 · good poor
Thu 15:00 0.78 · high 4.12 · good 27.70 · good poor
Thu 16:00 0.78 · high 4.33 · good 27.70 · good poor
Thu 17:00 0.80 · high 4.70 · good 27.70 · good poor