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 03:37

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 (44% 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 (27 hours)
  • Darkness (18 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

Tue 18:00 – Fri 18:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.36 around Wed 10:00; 1 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 0.4m to 0.5m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 9.5 to 14.8m/s).

Tides range from -0.08m to 1.68m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
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
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
Wed 20:00 0.56 · high 15.70 · high 27.50 · good poor
Wed 21:00 0.58 · high 14.70 · high 27.50 · good poor
Wed 22:00 0.58 · high 12.10 · high 27.40 · good poor
Wed 23:00 0.56 · high 12.50 · high 27.50 · good poor
Thu 00:00 0.56 · high 12.60 · high 27.50 · good poor
Thu 01:00 0.54 · high 13.60 · high 27.50 · good poor
Thu 02:00 0.50 · high 13.20 · high 27.60 · good fair
Thu 03:00 0.48 · high 12.10 · high 27.60 · good fair
Thu 04:00 0.48 · high 12.50 · high 27.70 · good fair
Thu 05:00 0.46 · high 12.70 · high 27.70 · good fair
Thu 06:00 0.46 · high 13.50 · high 27.80 · good fair
Thu 07:00 0.46 · high 13.20 · high 27.80 · good fair
Thu 08:00 0.44 · high 12.60 · high 27.80 · good fair
Thu 09:00 0.44 · high 10.90 · high 27.80 · good fair
Thu 10:00 0.44 · high 8.50 · high 27.80 · good fair
Thu 11:00 0.42 · high 7.00 · high 27.70 · good poor
Thu 12:00 0.42 · high 6.20 · high 27.70 · good poor
Thu 13:00 0.42 · high 5.60 · high 27.70 · good poor
Thu 14:00 0.42 · high 7.60 · high 27.70 · good poor
Thu 15:00 0.42 · high 8.30 · high 27.70 · good poor
Thu 16:00 0.42 · high 9.40 · high 27.60 · good poor
Thu 17:00 0.44 · high 8.80 · high 27.60 · good poor
Thu 18:00 0.44 · high 10.10 · high 27.60 · good poor
Thu 19:00 0.44 · high 10.00 · high 27.60 · good poor
Thu 20:00 0.46 · high 8.90 · high 27.60 · good poor
Thu 21:00 0.46 · high 9.30 · high 27.60 · good poor
Thu 22:00 0.44 · high 8.70 · high 27.60 · good poor
Thu 23:00 0.44 · high 11.10 · high 27.60 · good poor
Fri 00:00 0.42 · high 9.70 · high 27.70 · good fair
Fri 01:00 0.42 · high 10.00 · high 27.70 · good fair
Fri 02:00 0.42 · high 10.30 · high 27.80 · good fair
Fri 03:00 0.42 · high 10.80 · high 28.00 · good fair
Fri 04:00 0.44 · high 12.90 · high 28.10 · good fair
Fri 05:00 0.46 · high 15.00 · high 28.20 · good fair
Fri 06:00 0.48 · high 15.00 · high 28.20 · good poor
Fri 07:00 0.48 · high 13.90 · high 28.30 · good poor
Fri 08:00 0.48 · high 12.60 · high 28.30 · good poor
Fri 09:00 0.48 · high 10.50 · high 28.20 · good fair
Fri 10:00 0.40 · high 7.30 · high 28.40 · good fair
Fri 11:00 0.38 · high 7.00 · high 28.30 · good poor
Fri 12:00 0.38 · high 7.10 · high 28.20 · good poor
Fri 13:00 0.38 · high 5.80 · high 28.20 · good poor
Fri 14:00 0.38 · high 6.00 · high 28.10 · good poor
Fri 15:00 0.38 · high 7.20 · high 28.10 · good poor
Fri 16:00 0.38 · high 8.80 · high 28.00 · good poor
Fri 17:00 0.40 · high 10.10 · high 28.00 · good poor