Kerama Islands Snorkel Report Today

Japan · Updated Sun 22:58 (JST) · Source: Snapshot

The skinny

No forecast for later today Data updated Sun 22:58 (JST)

No remaining forecast hours are available for today in Kerama Islands. Check the three-day outlook.

Right now (forecast)

Poor · 0.0/10

Sun 23:00 (JST)

Later today

No fresh data for this period.

Next three days

Fair · 5.4/10

Tue 11:00 (JST)

Model estimates using Open-Meteo; not observations or safety guarantees. Check official advisories and conditions at the beach.

Score: No score

Best time: -

Main risk: Changing Conditions

No useful morning window is showing yet.

No useful afternoon window is showing yet.

Email me when it is good

Sunrise

06:27

Sunset

18:07

Water

28.4°C

Max air

26.0°C

Sky

Partly cloudy

59% cloud

No good model window in the next 72 hours

Use the best-available section for the least-bad times.

3-day planner Best available Show data

3-day planner

Monday

⚠️ Fair conditions

Main blocker: Waves

Tuesday

⚠️ Fair conditions

Main blocker: Waves

Wednesday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

  • Tue 11:00: Fair (0.54) · still limited by waves, tide/current
  • Tue 16:00: Fair (0.53) · still limited by waves, tide/current
  • Tue 17:00: Fair (0.53) · still limited by waves

Why this verdict

Main blockers across the next 72 hours:

  • Waves (70 hours)
  • Tide/current (67 hours)
  • Darkness (40 hours)

Jellyfish drift risk

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

Low · 34/100

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: Mon 07:00

Mon 07:00, Mon 19:00, Tue 08:00, Tue 19:00, Wed 08:00, Wed 20:00

Nearby alternatives in Japan

Okinawa - Blue Cave

56 km away

✅ Good

Miyako

257 km away

❌ Poor

Ishigaki

381 km away

❌ Poor

Advanced forecast data

Viewing current forecast

Sun 23:00 – Wed 23:00 (JST)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.48 around Mon 16:00; 7 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 0.76m to 0.86m).

Wind is at or below 5.4m/s in 20/24 sampled hours (range 0.68 to 6.62m/s).

Tides range from -0.01m to 1.85m; 2 of 24 hours are in or near peak slack windows.

72-hour forecast overview
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
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
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
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
Poor ❌ Limited
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
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 is better in daylight, so night hours score lower.
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Mon 00:00 0.84 · high 3.08 · good 28.40 · good Poor
Mon 01:00 0.84 · high 2.41 · good 28.40 · good Poor
Mon 02:00 0.86 · high 2.66 · good 28.40 · good Poor
Mon 03:00 0.86 · high 2.98 · good 28.40 · good Poor
Mon 04:00 0.86 · high 1.74 · good 28.40 · good Poor
Mon 05:00 0.86 · high 3.41 · good 28.40 · good Poor
Mon 06:00 0.86 · high 1.16 · good 28.40 · good Poor
Mon 07:00 0.86 · high 0.68 · good 28.40 · good Poor
Mon 08:00 0.84 · high 3.22 · good 28.40 · good Poor
Mon 09:00 0.84 · high 5.56 · high 28.40 · good Fair
Mon 10:00 0.84 · high 6.62 · high 28.40 · good Poor
Mon 11:00 0.82 · high 6.20 · high 28.40 · good Poor
Mon 12:00 0.82 · high 6.36 · high 28.50 · good Fair
Mon 13:00 0.82 · high 5.08 · good 28.50 · good Fair
Mon 14:00 0.80 · high 4.73 · good 28.60 · good Fair
Mon 15:00 0.80 · high 4.44 · good 28.60 · good Fair
Mon 16:00 0.80 · high 3.90 · good 28.60 · good Fair
Mon 17:00 0.78 · high 3.87 · good 28.50 · good Fair
Mon 18:00 0.78 · high 4.07 · good 28.50 · good Poor
Mon 19:00 0.78 · high 3.83 · good 28.50 · good Poor
Mon 20:00 0.76 · high 3.85 · good 28.40 · good Poor
Mon 21:00 0.76 · high 4.63 · good 28.40 · good Poor
Mon 22:00 0.76 · high 5.17 · good 28.40 · good Poor
Mon 23:00 0.76 · high 4.70 · good 28.40 · good Poor
Tue 00:00 0.76 · high 3.10 · good 28.40 · good Poor
Tue 01:00 0.76 · high 1.95 · good 28.40 · good Poor
Tue 02:00 0.76 · high 4.16 · good 28.40 · good Poor
Tue 03:00 0.76 · high 5.22 · good 28.40 · good Poor
Tue 04:00 0.74 · high 4.46 · good 28.40 · good Poor
Tue 05:00 0.74 · high 4.01 · good 28.30 · good Poor
Tue 06:00 0.72 · high 2.63 · good 28.30 · good Poor
Tue 07:00 0.70 · high 2.83 · good 28.30 · good Poor
Tue 08:00 0.70 · high 2.55 · good 28.30 · good Poor
Tue 09:00 0.68 · high 2.43 · good 28.30 · good Fair
Tue 10:00 0.68 · high 2.60 · good 28.40 · good Fair
Tue 11:00 0.66 · high 2.57 · good 28.40 · good Fair
Tue 12:00 0.66 · high 3.19 · good 28.50 · good Fair
Tue 13:00 0.64 · high 3.26 · good 28.60 · good Fair
Tue 14:00 0.64 · high 3.10 · good 28.60 · good Fair
Tue 15:00 0.62 · high 3.35 · good 28.70 · good Fair
Tue 16:00 0.62 · high 4.24 · good 28.70 · good Fair
Tue 17:00 0.62 · high 4.58 · good 28.60 · good Fair
Tue 18:00 0.62 · high 4.69 · good 28.60 · good Fair
Tue 19:00 0.64 · high 4.94 · good 28.50 · good Poor
Tue 20:00 0.64 · high 5.40 · good 28.50 · good Poor
Tue 21:00 0.66 · high 5.83 · high 28.40 · good Poor
Tue 22:00 0.66 · high 5.98 · high 28.40 · good Poor
Tue 23:00 0.68 · high 6.09 · high 28.40 · good Poor
Wed 00:00 0.68 · high 5.93 · high 28.40 · good Poor
Wed 01:00 0.70 · high 6.05 · high 28.30 · good Poor
Wed 02:00 0.70 · high 6.39 · high 28.30 · good Poor
Wed 03:00 0.72 · high 6.90 · high 28.30 · good Poor
Wed 04:00 0.72 · high 7.00 · high 28.30 · good Poor
Wed 05:00 0.72 · high 7.06 · high 28.30 · good Poor
Wed 06:00 0.72 · high 7.27 · high 28.30 · good Poor
Wed 07:00 0.74 · high 7.39 · high 28.30 · good Poor
Wed 08:00 0.76 · high 7.57 · high 28.30 · good Poor
Wed 09:00 0.78 · high 7.47 · high 28.30 · good Fair
Wed 10:00 0.82 · high 8.24 · high 28.30 · good Fair
Wed 11:00 0.84 · high 9.03 · high 28.30 · good Fair
Wed 12:00 0.88 · high 9.55 · high 28.30 · good Poor
Wed 13:00 0.94 · high 10.24 · high 28.40 · good Poor
Wed 14:00 1.00 · high 10.08 · high 28.40 · good Poor
Wed 15:00 1.06 · high 9.28 · high 28.40 · good Poor
Wed 16:00 1.16 · high 9.64 · high 28.40 · good Poor
Wed 17:00 1.26 · high 9.62 · high 28.40 · good Poor
Wed 18:00 1.36 · high 9.31 · high 28.30 · good Poor
Wed 19:00 1.36 · high 9.48 · high 28.30 · good Poor
Wed 20:00 1.36 · high 9.13 · high 28.30 · good Poor
Wed 21:00 1.36 · high 8.56 · high 28.30 · good Poor