MARINE REPORT / 72 HOURS

Miyako Snorkel Report Today

Japan · Updated Sat 09:29 (JST) · Source: Snapshot

The skinny

Marginal Data updated Sat 09:29 (JST)

Miyako looks marginal today. The least-bad daylight window is around Sat 13:00, but waves is limiting the forecast.

Right now (forecast)

Fair · 4.2/10

Sat 10:00 (JST)

Later today

Fair · 4.4/10

Sat 13:00 (JST)

Next three days

Fair · 5.1/10

Mon 16:00 (JST)

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

Score: 4.4/10

Best time: Sat 13:00

Main risk: Waves

Best morning signal: Sat 11:00 (Fair).

Best afternoon signal: Sat 13:00 (Fair). Peak afternoon wind is about 5.6 m/s.

Email me when it is good

Sunrise

06:37

Sunset

18:10

Water

28.1°C

Max air

28.9°C

Sky

Partly cloudy

32% 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

Saturday

⚠️ Fair conditions

Main blocker: Waves

Sunday

⚠️ Fair conditions

Main blocker: Waves

Monday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

  • Mon 16:00: Fair (0.51) · still limited by waves
  • Mon 17:00: Fair (0.45) · still limited by waves, tide/current
  • Sat 13:00: Fair (0.44) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (70 hours)
  • Tide/current (60 hours)
  • Darkness (42 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: Tue 01:00

Sat 11:00, Sun 13:00, Mon 15:00, Tue 01:00

Nearby alternatives in Japan

Ishigaki

127 km away

⚠️ Fair

Kerama Islands

257 km away

❌ Poor

Okinawa - Blue Cave

314 km away

✅ Good

Advanced forecast data

Viewing current forecast

Sat 10:00 – Tue 10:00 (JST)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.44 around Sat 13:00; 8 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 0.66m to 1.12m).

Wind is at or below 5.4m/s in 13/24 sampled hours (range 4.62 to 7.65m/s).

Tides range from 0.64m to 1.54m; 1 of 24 hours are in or near peak slack windows.

72-hour forecast overview
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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
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
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
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
Sat 11:00 0.66 · high 5.09 · good 28.10 · good Fair
Sat 12:00 0.66 · high 5.25 · good 28.20 · good Fair
Sat 13:00 0.66 · high 5.03 · good 28.20 · good Fair
Sat 14:00 0.66 · high 4.62 · good 28.30 · good Fair
Sat 15:00 0.66 · high 4.87 · good 28.30 · good Fair
Sat 16:00 0.68 · high 5.20 · good 28.30 · good Fair
Sat 17:00 0.68 · high 5.57 · high 28.30 · good Fair
Sat 18:00 0.70 · high 5.30 · good 28.30 · good Fair
Sat 19:00 0.74 · high 5.39 · good 28.30 · good Poor
Sat 20:00 0.78 · high 5.91 · high 28.30 · good Poor
Sat 21:00 0.82 · high 6.45 · high 28.30 · good Poor
Sat 22:00 0.90 · high 7.17 · high 28.30 · good Poor
Sat 23:00 0.96 · high 7.65 · high 28.20 · good Poor
Sun 00:00 1.04 · high 7.26 · high 28.20 · good Poor
Sun 01:00 1.06 · high 7.02 · high 28.20 · good Poor
Sun 02:00 1.10 · high 6.72 · high 28.10 · good Poor
Sun 03:00 1.12 · high 6.32 · high 28.10 · good Poor
Sun 04:00 1.10 · high 5.83 · high 28.10 · good Poor
Sun 05:00 1.08 · high 5.32 · good 28.10 · good Poor
Sun 06:00 1.06 · high 5.05 · good 28.10 · good Poor
Sun 07:00 1.04 · high 4.62 · good 28.10 · good Poor
Sun 08:00 1.04 · high 4.80 · good 28.10 · good Poor
Sun 09:00 1.02 · high 5.30 · good 28.10 · good Poor
Sun 10:00 1.02 · high 5.66 · high 28.10 · good Poor
Sun 11:00 1.04 · high 6.04 · high 28.20 · good Poor
Sun 12:00 1.04 · high 6.27 · high 28.20 · good Poor
Sun 13:00 1.04 · high 6.08 · high 28.30 · good Fair
Sun 14:00 1.04 · high 5.74 · high 28.40 · good Fair
Sun 15:00 1.04 · high 5.40 · good 28.40 · good Fair
Sun 16:00 1.02 · high 5.43 · high 28.40 · good Poor
Sun 17:00 1.02 · high 5.89 · high 28.50 · good Fair
Sun 18:00 1.00 · high 5.49 · high 28.50 · good Fair
Sun 19:00 1.00 · high 6.22 · high 28.40 · good Poor
Sun 20:00 0.98 · high 6.01 · high 28.40 · good Poor
Sun 21:00 0.98 · high 5.96 · high 28.40 · good Poor
Sun 22:00 0.98 · high 5.64 · high 28.40 · good Poor
Sun 23:00 0.96 · high 5.48 · high 28.40 · good Poor
Mon 00:00 0.96 · high 5.57 · high 28.40 · good Poor
Mon 01:00 0.94 · high 5.01 · good 28.40 · good Poor
Mon 02:00 0.92 · high 5.10 · good 28.30 · good Poor
Mon 03:00 0.90 · high 4.53 · good 28.30 · good Poor
Mon 04:00 0.88 · high 4.25 · good 28.30 · good Poor
Mon 05:00 0.88 · high 4.30 · good 28.30 · good Poor
Mon 06:00 0.86 · high 4.67 · good 28.30 · good Poor
Mon 07:00 0.86 · high 4.95 · good 28.30 · good Poor
Mon 08:00 0.86 · high 5.30 · good 28.30 · good Poor
Mon 09:00 0.86 · high 5.47 · high 28.30 · good Fair
Mon 10:00 0.86 · high 5.42 · high 28.40 · good Fair
Mon 11:00 0.84 · high 5.00 · good 28.40 · good Fair
Mon 12:00 0.84 · high 4.74 · good 28.50 · good Fair
Mon 13:00 0.84 · high 4.35 · good 28.60 · good Fair
Mon 14:00 0.84 · high 4.51 · good 28.70 · good Fair
Mon 15:00 0.84 · high 4.91 · good 28.70 · good Fair
Mon 16:00 0.84 · high 5.08 · good 28.70 · good Fair
Mon 17:00 0.86 · high 5.23 · good 28.70 · good Fair
Mon 18:00 0.86 · high 5.38 · good 28.70 · good Fair
Mon 19:00 0.88 · high 5.28 · good 28.70 · good Poor
Mon 20:00 0.88 · high 5.56 · high 28.70 · good Poor
Mon 21:00 0.90 · high 5.28 · good 28.70 · good Poor
Mon 22:00 0.92 · high 5.32 · good 28.70 · good Poor
Mon 23:00 0.94 · high 5.56 · high 28.60 · good Poor
Tue 00:00 0.96 · high 5.53 · high 28.60 · good Poor
Tue 01:00 0.96 · high 5.24 · good 28.60 · good Poor
Tue 02:00 0.98 · high 5.22 · good 28.50 · good Poor
Tue 03:00 0.98 · high 4.95 · good 28.50 · good Poor
Tue 04:00 0.98 · high 4.73 · good 28.50 · good Poor
Tue 05:00 0.98 · high 4.31 · good 28.50 · good Poor
Tue 06:00 0.98 · high 3.71 · good 28.40 · good Poor
Tue 07:00 1.00 · high 3.72 · good 28.40 · good Poor
Tue 08:00 1.02 · high 4.61 · good 28.40 · good Poor