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 · 4.1/10

Sat 12:00 (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

No useful morning window is showing yet.

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

28.2°C

Max air

28.9°C

Sky

Partly cloudy

54% 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 (68 hours)
  • Tide/current (58 hours)
  • Darkness (42 hours)

Jellyfish drift risk

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

Low · 34/100

Low peak drift risk around Sat 14:00.

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

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

Thu 12:00 – Sun 12:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.43 around Fri 11:00; 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 0.74m to 1.12m).

Wind is at or below 5.4m/s in 8/24 sampled hours (range 3.2 to 7.06m/s).

Tides range from 0.41m to 1.74m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Fair ⚠️ Fair
Fair ⚠️ Fair
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
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
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
Fair ⚠️ Fair
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
Thu 12:00 1.00 · high 5.55 · high 28.10 · good Fair
Thu 13:00 1.00 · high 5.71 · high 28.10 · good Fair
Thu 14:00 0.98 · high 5.87 · high 28.20 · good Poor
Thu 15:00 0.98 · high 6.68 · high 28.20 · good Poor
Thu 16:00 1.00 · high 6.58 · high 28.20 · good Fair
Thu 17:00 1.02 · high 6.58 · high 28.20 · good Fair
Thu 18:00 1.04 · high 6.69 · high 28.10 · good Fair
Thu 19:00 1.08 · high 6.63 · high 28.10 · good Poor
Thu 20:00 1.10 · high 6.78 · high 28.10 · good Poor
Thu 21:00 1.12 · high 7.06 · high 28.00 · good Poor
Thu 22:00 1.10 · high 6.93 · high 28.00 · good Poor
Thu 23:00 1.06 · high 6.80 · high 28.00 · good Poor
Fri 00:00 1.04 · high 6.52 · high 28.00 · good Poor
Fri 01:00 1.08 · high 5.88 · high 27.90 · good Poor
Fri 02:00 1.04 · high 5.79 · high 27.90 · good Poor
Fri 03:00 1.02 · high 5.59 · high 27.90 · good Poor
Fri 04:00 0.98 · high 5.36 · good 27.80 · good Poor
Fri 05:00 0.96 · high 5.05 · good 27.80 · good Poor
Fri 06:00 0.92 · high 4.60 · good 27.80 · good Poor
Fri 07:00 0.88 · high 4.01 · good 27.80 · good Poor
Fri 08:00 0.84 · high 4.19 · good 27.80 · good Poor
Fri 09:00 0.80 · high 3.65 · good 27.80 · good Fair
Fri 10:00 0.78 · high 3.60 · good 27.80 · good Fair
Fri 11:00 0.74 · high 3.20 · good 27.90 · good Fair
Fri 12:00 0.72 · high 3.02 · good 28.00 · good Fair
Fri 13:00 0.70 · high 3.07 · good 28.00 · good Fair
Fri 14:00 0.66 · high 3.00 · good 28.10 · good Fair
Fri 15:00 0.64 · high 4.67 · good 28.20 · good Fair
Fri 16:00 0.64 · high 5.07 · good 28.20 · good Fair
Fri 17:00 0.64 · high 5.23 · good 28.20 · good Fair
Fri 18:00 0.64 · high 5.60 · high 28.20 · good Fair
Fri 19:00 0.66 · high 5.99 · high 28.20 · good Poor
Fri 20:00 0.78 · high 5.93 · high 28.20 · good Poor
Fri 21:00 0.80 · high 6.41 · high 28.20 · good Poor
Fri 22:00 0.84 · high 6.51 · high 28.20 · good Poor
Fri 23:00 0.86 · high 6.39 · high 28.10 · good Poor
Sat 00:00 0.90 · high 5.85 · high 28.10 · good Poor
Sat 01:00 0.90 · high 5.55 · high 28.10 · good Poor
Sat 02:00 0.90 · high 4.51 · good 28.10 · good Poor
Sat 03:00 0.90 · high 4.32 · good 28.10 · good Poor
Sat 04:00 0.86 · high 4.28 · good 28.10 · good Poor
Sat 05:00 0.84 · high 4.28 · good 28.00 · good Poor
Sat 06:00 0.70 · high 4.25 · good 28.00 · good Poor
Sat 07:00 0.70 · high 4.10 · good 28.00 · good Poor
Sat 08:00 0.70 · high 4.16 · good 28.00 · good Poor
Sat 09:00 0.70 · high 4.88 · good 28.00 · good Fair
Sat 10:00 0.70 · high 4.95 · good 28.10 · good Fair
Sat 11:00 0.72 · high 5.35 · good 28.10 · good Fair
Sat 12:00 0.72 · high 5.46 · high 28.20 · good Fair
Sat 13:00 0.74 · high 6.20 · high 28.30 · good Fair
Sat 14:00 0.78 · high 5.45 · high 28.40 · good Fair
Sat 15:00 0.80 · high 5.88 · high 28.40 · good Fair
Sat 16:00 0.84 · high 6.25 · high 28.40 · good Fair
Sat 17:00 0.88 · high 6.53 · high 28.40 · good Fair
Sat 18:00 0.90 · high 4.81 · good 28.40 · good Fair
Sat 19:00 0.94 · high 4.87 · good 28.40 · good Poor
Sat 20:00 1.00 · high 5.25 · good 28.30 · good Poor
Sat 21:00 1.04 · high 5.36 · good 28.30 · good Poor
Sat 22:00 1.08 · high 5.65 · high 28.30 · good Poor
Sat 23:00 1.10 · high 5.95 · high 28.30 · good Poor
Sun 00:00 1.14 · high 6.04 · high 28.20 · good Poor
Sun 01:00 1.12 · high 5.45 · high 28.20 · good Poor
Sun 02:00 1.12 · high 5.05 · good 28.20 · good Poor
Sun 03:00 1.10 · high 4.84 · good 28.10 · good Poor
Sun 04:00 1.08 · high 5.06 · good 28.10 · good Poor
Sun 05:00 1.06 · high 4.88 · good 28.10 · good Poor
Sun 06:00 1.04 · high 5.26 · good 28.10 · good Poor
Sun 07:00 0.90 · high 5.90 · high 28.10 · good Poor
Sun 08:00 0.92 · high 5.95 · high 28.10 · good Poor
Sun 09:00 0.94 · high 6.01 · high 28.10 · good Poor
Sun 10:00 0.94 · high 5.73 · high 28.10 · good Fair
Sun 11:00 0.94 · high 5.06 · good 28.20 · good Fair