Wednesday
✅ good conditions
Main blocker: Waves
Miyako Snorkel Report Today
Japan · Updated Tue 04:14 (JST) · Source: Snapshot
The skinny
Go in the best window Report Tue 23:39Miyako has a usable snorkeling window around Wed 13:00. The main thing to watch is waves.
Score: 5.8/10
Best time: Wed 13:00
Main risk: Waves
No useful morning window is showing yet.
No useful afternoon window is showing yet.
Good window is available today
Next safe window: Wed 04:00–10:00 (30% of next 72h are suitable)
3-day planner
Thursday
✅ excellent conditions
Main blocker: Waves
Friday
⚠️ fair conditions
Main blocker: Waves
Best available hours
Next safe window starts at Wed 04:00 until 10:00.
Why this verdict
Main blockers across the next 72 hours:
- Waves (61 hours)
- Tide/current (55 hours)
- Darkness (35 hours)
Jellyfish drift risk
Drift estimate from wind, swell, current and warm water.
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 15:00
Tue 15:00, Wed 04:00, Thu 06:00, Thu 17:00
Nearby alternatives in Japan
Advanced forecast data
Viewing historical data
Tue 14:00 – Fri 14:00 (JST)
Snorkel Score (selected 24h)
Best snorkel score is 0.38 around Wed 16:00; 3 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 0.96m to 1.16m).
Wind is at or below 5.4m/s in 14/24 sampled hours (range 4.2 to 5.98m/s).
Tides range from -0.14m to 2.04m; 2 of 24 hours are in or near peak slack windows.
72-hour historical overview
poor
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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 and safety gate (outside daylight scores lower).
Detailed hourly data table
| Time | Wave (m) | Wind (m/s) | Sea temp (°C) | Status |
|---|---|---|---|---|
| Tue 14:00 | 1.16 · high | 5.85 · high | 28.40 · good | poor |
| Tue 15:00 | 1.16 · high | 5.80 · high | 28.30 · good | poor |
| Tue 16:00 | 1.16 · high | 5.85 · high | 28.30 · good | poor |
| Tue 17:00 | 1.14 · high | 5.81 · high | 28.20 · good | poor |
| Tue 18:00 | 1.14 · high | 5.87 · high | 28.20 · good | poor |
| Tue 19:00 | 1.14 · high | 5.98 · high | 28.10 · good | poor |
| Tue 20:00 | 1.12 · high | 5.96 · high | 28.10 · good | poor |
| Tue 21:00 | 1.12 · high | 5.90 · high | 28.10 · good | poor |
| Tue 22:00 | 1.10 · high | 5.95 · high | 28.00 · good | poor |
| Tue 23:00 | 1.10 · high | 5.66 · high | 28.00 · good | poor |
| Wed 00:00 | 1.08 · high | 5.02 · good | 28.00 · good | fair |
| Wed 01:00 | 1.06 · high | 5.06 · good | 28.10 · good | poor |
| Wed 02:00 | 1.04 · high | 4.74 · good | 28.10 · good | poor |
| Wed 03:00 | 1.02 · high | 5.36 · good | 28.20 · good | poor |
| Wed 04:00 | 1.02 · high | 5.09 · good | 28.30 · good | poor |
| Wed 05:00 | 1.02 · high | 4.84 · good | 28.40 · good | poor |
| Wed 06:00 | 1.02 · high | 4.84 · good | 28.50 · good | poor |
| Wed 07:00 | 1.02 · high | 4.47 · good | 28.70 · good | fair |
| Wed 08:00 | 1.02 · high | 4.31 · good | 28.70 · good | poor |
| Wed 09:00 | 1.00 · high | 4.48 · good | 28.70 · good | poor |
| Wed 10:00 | 0.98 · high | 4.23 · good | 28.80 · good | fair |
| Wed 11:00 | 0.98 · high | 4.20 · good | 28.80 · good | poor |
| Wed 12:00 | 0.96 · high | 4.41 · good | 28.80 · good | poor |
| Wed 13:00 | 0.96 · high | 4.21 · good | 28.80 · good | poor |
| Wed 14:00 | 0.94 · high | 4.52 · good | 28.70 · good | poor |
| Wed 15:00 | 0.94 · high | 4.90 · good | 28.70 · good | poor |
| Wed 16:00 | 0.94 · high | 5.22 · good | 28.70 · good | poor |
| Wed 17:00 | 0.94 · high | 5.61 · high | 28.60 · good | poor |
| Wed 18:00 | 0.94 · high | 5.51 · high | 28.60 · good | poor |
| Wed 19:00 | 0.94 · high | 4.99 · good | 28.50 · good | poor |
| Wed 20:00 | 0.92 · high | 5.35 · good | 28.50 · good | poor |
| Wed 21:00 | 0.92 · high | 5.01 · good | 28.50 · good | poor |
| Wed 22:00 | 0.92 · high | 4.36 · good | 28.40 · good | poor |
| Wed 23:00 | 0.94 · high | 4.62 · good | 28.40 · good | poor |
| Thu 00:00 | 0.94 · high | 4.72 · good | 28.40 · good | fair |
| Thu 01:00 | 0.96 · high | 5.23 · good | 28.50 · good | poor |
| Thu 02:00 | 0.96 · high | 5.71 · high | 28.50 · good | poor |
| Thu 03:00 | 0.98 · high | 5.83 · high | 28.60 · good | poor |
| Thu 04:00 | 1.00 · high | 5.73 · high | 28.70 · good | poor |
| Thu 05:00 | 1.00 · high | 5.88 · high | 28.70 · good | poor |
| Thu 06:00 | 1.02 · high | 5.99 · high | 28.80 · good | poor |
| Thu 07:00 | 1.02 · high | 5.64 · high | 28.80 · good | fair |
| Thu 08:00 | 1.00 · high | 5.34 · good | 28.80 · good | poor |
| Thu 09:00 | 1.00 · high | 5.17 · good | 28.80 · good | poor |
| Thu 10:00 | 1.00 · high | 4.56 · good | 28.80 · good | fair |
| Thu 11:00 | 0.98 · high | 4.57 · good | 28.80 · good | poor |
| Thu 12:00 | 0.98 · high | 5.19 · good | 28.80 · good | poor |
| Thu 13:00 | 0.96 · high | 5.28 · good | 28.80 · good | poor |
| Thu 14:00 | 0.96 · high | 5.02 · good | 28.80 · good | poor |
| Thu 15:00 | 0.94 · high | 5.75 · high | 28.80 · good | poor |
| Thu 16:00 | 0.96 · high | 5.57 · high | 28.70 · good | poor |
| Thu 17:00 | 0.98 · high | 6.04 · high | 28.70 · good | poor |
| Thu 18:00 | 1.00 · high | 6.38 · high | 28.70 · good | poor |
| Thu 19:00 | 1.02 · high | 6.20 · high | 28.70 · good | poor |
| Thu 20:00 | 1.04 · high | 5.49 · high | 28.70 · good | poor |
| Thu 21:00 | 1.06 · high | 4.92 · good | 28.70 · good | poor |
| Thu 22:00 | 1.08 · high | 5.19 · good | 28.70 · good | poor |
| Thu 23:00 | 1.08 · high | 5.55 · high | 28.70 · good | poor |
| Fri 00:00 | 1.10 · high | 6.34 · high | 28.70 · good | poor |
| Fri 01:00 | 1.12 · high | 6.37 · high | 28.80 · good | poor |
| Fri 02:00 | 1.14 · high | 6.61 · high | 28.80 · good | poor |
| Fri 03:00 | 1.16 · high | 6.87 · high | 28.90 · good | poor |
| Fri 04:00 | 1.16 · high | 7.05 · high | 28.90 · good | poor |
| Fri 05:00 | 1.16 · high | 6.91 · high | 29.00 · good | poor |
| Fri 06:00 | 1.16 · high | 6.38 · high | 29.00 · good | poor |
| Fri 07:00 | 1.12 · high | 5.58 · high | 29.00 · good | poor |
| Fri 08:00 | 1.10 · high | 5.17 · good | 29.10 · good | poor |
| Fri 09:00 | 1.06 · high | 4.42 · good | 29.10 · good | poor |
| Fri 10:00 | 1.06 · high | 4.81 · good | 29.10 · good | poor |
| Fri 11:00 | 1.06 · high | 5.04 · good | 29.10 · good | poor |
| Fri 12:00 | 1.06 · high | 5.19 · good | 29.10 · good | poor |
| Fri 13:00 | 1.10 · high | 5.97 · high | 29.10 · good | poor |