MARINE REPORT / 72 HOURS

Miyako Snorkel Report Today

Japan · Updated Sun 01:48 (JST) · Source: Snapshot

The skinny

Marginal Data updated Sun 01:48 (JST)

Miyako looks marginal today. The least-bad daylight window is around Sun 14:00, but waves is limiting the forecast.

Right now (forecast)

Poor · 0.0/10

Sun 04:00 (JST)

Later today

Fair · 4.4/10

Sun 14:00 (JST)

Next three days

Fair · 5.4/10

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: Sun 14:00

Main risk: Waves

Best morning signal: Sun 09:00 (Fair).

Best afternoon signal: Sun 14:00 (Fair). Peak afternoon wind is about 6.0 m/s.

Email me when it is good

Sunrise

06:37

Sunset

18:10

Water

28.1°C

Max air

29.2°C

Sky

Partly cloudy

39% 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

Sunday

⚠️ Fair conditions

Main blocker: Waves

Monday

⚠️ Fair conditions

Main blocker: Waves

Tuesday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

  • Mon 16:00: Fair (0.54) · still limited by waves
  • Mon 15:00: Fair (0.51) · still limited by waves, tide/current
  • Mon 17:00: Fair (0.49) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (68 hours)
  • Tide/current (60 hours)
  • Darkness (38 hours)

Jellyfish drift risk

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

Low · 34/100

Low peak drift risk around Sun 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: Tue 01:00

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

Nearby alternatives in Japan

Ishigaki

127 km away

❌ Poor

Kerama Islands

257 km away

❌ Poor

Okinawa - Blue Cave

314 km away

✅ Good

Advanced forecast data

Viewing historical data

Fri 04:00 – Mon 04:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.69 around Fri 12:00; 10 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.

12/24 sampled hours stay at or below 0.36m (range 0.32m to 0.84m).

Wind is at or below 5.4m/s in 22/24 sampled hours (range 2.33 to 5.9m/s).

Tides range from 0.22m 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
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
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
Good 🌟 Good
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
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
Fri 04:00 0.34 · good 2.33 · good 29.80 · good Poor
Fri 05:00 0.34 · good 3.01 · good 29.80 · good Poor
Fri 06:00 0.34 · good 2.86 · good 29.70 · good Poor
Fri 07:00 0.34 · good 2.82 · good 29.70 · good Poor
Fri 08:00 0.32 · good 2.58 · good 29.70 · good Poor
Fri 09:00 0.32 · good 2.76 · good 29.70 · good Good
Fri 10:00 0.32 · good 2.77 · good 29.70 · good Good
Fri 11:00 0.32 · good 3.11 · good 29.80 · good Good
Fri 12:00 0.32 · good 3.14 · good 29.90 · good Good
Fri 13:00 0.34 · good 3.88 · good 29.90 · good Good
Fri 14:00 0.34 · good 3.83 · good 30.00 · good Fair
Fri 15:00 0.36 · good 4.50 · good 30.00 · good Fair
Fri 16:00 0.38 · high 5.03 · good 30.00 · good Fair
Fri 17:00 0.42 · high 4.54 · good 30.00 · good Fair
Fri 18:00 0.44 · high 3.38 · good 30.00 · good Fair
Fri 19:00 0.48 · high 4.85 · good 30.00 · good Poor
Fri 20:00 0.52 · high 4.58 · good 29.90 · good Poor
Fri 21:00 0.56 · high 3.40 · good 29.90 · good Poor
Fri 22:00 0.60 · high 4.31 · good 29.80 · good Poor
Fri 23:00 0.62 · high 5.37 · good 29.80 · good Poor
Sat 00:00 0.66 · high 5.90 · high 29.80 · good Poor
Sat 01:00 0.70 · high 5.02 · good 29.70 · good Poor
Sat 02:00 0.76 · high 5.57 · high 29.70 · good Poor
Sat 03:00 0.84 · high 5.25 · good 29.70 · good Poor
Sat 04:00 0.86 · high 5.64 · high 29.60 · good Poor
Sat 05:00 0.90 · high 5.87 · high 29.60 · good Poor
Sat 06:00 0.92 · high 6.37 · high 29.50 · good Poor
Sat 07:00 0.92 · high 5.45 · high 29.50 · good Poor
Sat 08:00 0.92 · high 5.86 · high 29.50 · good Poor
Sat 09:00 0.92 · high 6.12 · high 29.50 · good Fair
Sat 10:00 0.90 · high 6.10 · high 29.50 · good Fair
Sat 11:00 0.88 · high 5.89 · high 29.50 · good Fair
Sat 12:00 0.86 · high 5.51 · high 29.60 · good Fair
Sat 13:00 0.84 · high 4.94 · good 29.70 · good Fair
Sat 14:00 0.84 · high 4.74 · good 29.70 · good Fair
Sat 15:00 0.82 · high 4.92 · good 29.70 · good Fair
Sat 16:00 0.82 · high 4.42 · good 29.70 · good Fair
Sat 17:00 0.80 · high 4.10 · good 29.70 · good Fair
Sat 18:00 0.80 · high 3.75 · good 29.70 · good Fair
Sat 19:00 0.80 · high 3.50 · good 29.70 · good Poor
Sat 20:00 0.74 · high 3.71 · good 29.60 · good Poor
Sat 21:00 0.72 · high 3.56 · good 29.60 · good Poor
Sat 22:00 0.70 · high 3.16 · good 29.50 · good Poor
Sat 23:00 0.70 · high 2.83 · good 29.50 · good Poor
Sun 00:00 0.68 · high 2.01 · good 29.50 · good Poor
Sun 01:00 0.74 · high 2.39 · good 29.50 · good Poor
Sun 02:00 0.72 · high 2.72 · good 29.40 · good Poor
Sun 03:00 0.70 · high 3.63 · good 29.40 · good Poor
Sun 04:00 0.68 · high 3.30 · good 29.40 · good Poor
Sun 05:00 0.68 · high 2.71 · good 29.40 · good Poor
Sun 06:00 0.66 · high 2.24 · good 29.30 · good Poor
Sun 07:00 0.66 · high 2.37 · good 29.30 · good Poor
Sun 08:00 0.64 · high 2.51 · good 29.30 · good Poor
Sun 09:00 0.64 · high 2.44 · good 29.30 · good Good
Sun 10:00 0.64 · high 2.27 · good 29.40 · good Fair
Sun 11:00 0.62 · high 2.30 · good 29.50 · good Fair
Sun 12:00 0.62 · high 2.50 · good 29.60 · good Fair
Sun 13:00 0.62 · high 2.67 · good 29.60 · good Fair
Sun 14:00 0.62 · high 2.30 · good 29.70 · good Fair
Sun 15:00 0.62 · high 2.53 · good 29.80 · good Fair
Sun 16:00 0.62 · high 2.69 · good 29.80 · good Fair
Sun 17:00 0.64 · high 2.95 · good 29.80 · good Fair
Sun 18:00 0.64 · high 2.98 · good 29.80 · good Fair
Sun 19:00 0.64 · high 2.93 · good 29.70 · good Poor
Sun 20:00 0.68 · high 3.78 · good 29.60 · good Poor
Sun 21:00 0.70 · high 3.90 · good 29.60 · good Poor
Sun 22:00 0.72 · high 3.68 · good 29.60 · good Poor
Sun 23:00 0.72 · high 3.23 · good 29.50 · good Poor
Mon 00:00 0.74 · high 3.29 · good 29.50 · good Poor
Mon 01:00 0.76 · high 2.93 · good 29.50 · good Poor
Mon 02:00 0.76 · high 2.91 · good 29.40 · good Poor
Mon 03:00 0.78 · high 2.56 · good 29.40 · good Poor