MARINE REPORT / 72 HOURS

Miyako Snorkel Report Today

Japan · Updated Sun 11:09 (JST) · Source: Snapshot

The skinny

Marginal Data updated Sun 11:09 (JST)

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

Right now (forecast)

Fair · 3.6/10

Sun 11:00 (JST)

Later today

Fair · 4.5/10

Sun 14:00 (JST)

Next three days

Fair · 5.0/10

Mon 16:00 (JST)

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

Score: 4.5/10

Best time: Sun 14:00

Main risk: Waves

No useful morning window is showing yet.

Best afternoon signal: Sun 14:00 (Fair). Peak afternoon wind is about 5.8 m/s.

Email me when it is good

Sunrise

06:37

Sunset

18:09

Water

28.2°C

Max air

29.0°C

Sky

Partly cloudy

62% 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 (0.50) · still limited by waves
  • Mon 17:00: Fair (0.45) · still limited by waves, wind
  • Sun 14:00: Fair (0.45) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (71 hours)
  • Tide/current (64 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

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

Nearby alternatives in Japan

Ishigaki

127 km away

⚠️ Fair

Kerama Islands

257 km away

⚠️ Fair

Okinawa - Blue Cave

314 km away

✅ Good

Advanced forecast data

Viewing historical data

Fri 11:00 – Mon 11:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.65 around Fri 18:00; 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.

9/24 sampled hours stay at or below 0.36m (range 0.34m to 0.88m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 2.52 to 3.76m/s).

Tides range from 0.21m to 1.83m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
Poor ❌ Limited
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
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
Good 🌟 Good
Fair ⚠️ Fair
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 11:00 0.36 · good 2.56 · good 29.20 · good Good
Fri 12:00 0.36 · good 2.52 · good 29.30 · good Good
Fri 13:00 0.36 · good 2.70 · good 29.40 · good Good
Fri 14:00 0.36 · good 3.05 · good 29.50 · good Good
Fri 15:00 0.36 · good 3.43 · good 29.60 · good Good
Fri 16:00 0.36 · good 3.49 · good 29.60 · good Good
Fri 17:00 0.34 · good 3.54 · good 29.60 · good Good
Fri 18:00 0.34 · good 3.26 · good 29.60 · good Good
Fri 19:00 0.34 · good 3.28 · good 29.50 · good Poor
Fri 20:00 0.40 · high 3.53 · good 29.50 · good Poor
Fri 21:00 0.42 · high 3.76 · good 29.50 · good Poor
Fri 22:00 0.46 · high 3.59 · good 29.50 · good Poor
Fri 23:00 0.50 · high 2.98 · good 29.40 · good Poor
Sat 00:00 0.52 · high 2.82 · good 29.40 · good Poor
Sat 01:00 0.56 · high 2.97 · good 29.40 · good Poor
Sat 02:00 0.58 · high 3.14 · good 29.30 · good Poor
Sat 03:00 0.62 · high 3.07 · good 29.30 · good Poor
Sat 04:00 0.66 · high 3.21 · good 29.30 · good Poor
Sat 05:00 0.72 · high 3.35 · good 29.30 · good Poor
Sat 06:00 0.76 · high 2.86 · good 29.20 · good Poor
Sat 07:00 0.80 · high 3.31 · good 29.20 · good Poor
Sat 08:00 0.82 · high 3.52 · good 29.20 · good Poor
Sat 09:00 0.86 · high 3.05 · good 29.20 · good Fair
Sat 10:00 0.88 · high 3.21 · good 29.30 · good Fair
Sat 11:00 0.90 · high 3.03 · good 29.40 · good Fair
Sat 12:00 0.92 · high 2.91 · good 29.50 · good Fair
Sat 13:00 0.92 · high 3.26 · good 29.60 · good Poor
Sat 14:00 0.94 · high 3.70 · good 29.70 · good Fair
Sat 15:00 0.94 · high 3.51 · good 29.70 · good Fair
Sat 16:00 0.94 · high 3.90 · good 29.70 · good Fair
Sat 17:00 0.96 · high 4.43 · good 29.70 · good Fair
Sat 18:00 0.96 · high 4.44 · good 29.70 · good Poor
Sat 19:00 0.98 · high 4.49 · good 29.60 · good Poor
Sat 20:00 1.02 · high 4.59 · good 29.60 · good Poor
Sat 21:00 1.04 · high 4.56 · good 29.50 · good Poor
Sat 22:00 1.08 · high 4.99 · good 29.50 · good Poor
Sat 23:00 1.08 · high 3.63 · good 29.50 · good Poor
Sun 00:00 1.06 · high 3.51 · good 29.40 · good Poor
Sun 01:00 1.06 · high 3.46 · good 29.40 · good Poor
Sun 02:00 1.04 · high 3.94 · good 29.40 · good Poor
Sun 03:00 1.04 · high 3.32 · good 29.40 · good Poor
Sun 04:00 1.04 · high 3.42 · good 29.40 · good Poor
Sun 05:00 1.04 · high 3.42 · good 29.30 · good Poor
Sun 06:00 1.04 · high 3.62 · good 29.30 · good Poor
Sun 07:00 1.04 · high 3.67 · good 29.30 · good Poor
Sun 08:00 1.04 · high 4.16 · good 29.30 · good Poor
Sun 09:00 1.04 · high 5.39 · good 29.30 · good Fair
Sun 10:00 1.04 · high 6.04 · high 29.40 · good Poor
Sun 11:00 1.06 · high 5.74 · high 29.40 · good Poor
Sun 12:00 1.06 · high 5.56 · high 29.50 · good Poor
Sun 13:00 1.06 · high 7.04 · high 29.50 · good Poor
Sun 14:00 1.06 · high 5.76 · high 29.60 · good Poor
Sun 15:00 1.06 · high 7.02 · high 29.60 · good Poor
Sun 16:00 1.06 · high 6.36 · high 29.60 · good Poor
Sun 17:00 1.06 · high 5.50 · high 29.60 · good Poor
Sun 18:00 1.06 · high 5.94 · high 29.60 · good Poor
Sun 19:00 1.06 · high 5.89 · high 29.60 · good Poor
Sun 20:00 1.12 · high 5.10 · good 29.60 · good Poor
Sun 21:00 1.10 · high 4.50 · good 29.60 · good Poor
Sun 22:00 0.76 · high 3.83 · good 29.60 · good Poor
Sun 23:00 0.74 · high 3.22 · good 29.50 · good Poor
Mon 00:00 0.70 · high 3.52 · good 29.50 · good Poor
Mon 01:00 0.68 · high 4.07 · good 29.50 · good Poor
Mon 02:00 0.64 · high 4.32 · good 29.40 · good Poor
Mon 03:00 0.62 · high 3.98 · good 29.40 · good Poor
Mon 04:00 0.60 · high 4.04 · good 29.40 · good Poor
Mon 05:00 0.58 · high 3.93 · good 29.40 · good Poor
Mon 06:00 0.56 · high 3.99 · good 29.40 · good Poor
Mon 07:00 0.54 · high 4.49 · good 29.40 · good Poor
Mon 08:00 0.54 · high 4.73 · good 29.40 · good Poor
Mon 09:00 0.52 · high 4.36 · good 29.40 · good Good
Mon 10:00 0.50 · high 4.30 · good 29.40 · good Fair