SnorkelForecast.com

Ishigaki Snorkel Report Today

Japan · Updated Fri 19:07 (JST) · Source: Snapshot

The skinny

Marginal Report Sat 04:34

Ishigaki looks marginal today. The least-bad daylight window is around Sat 15:00, but waves is limiting the forecast.

Score: 4.5/10

Best time: Sat 15:00

Main risk: Waves

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

Best afternoon signal: Sat 15:00 (Fair). Peak afternoon wind is about 3.7 m/s.

Email me when it is good

Sunrise

06:28

Sunset

18:51

Water

28.9°C

Max air

29.5°C

Sky

Cloudy

98% 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

  • Sat 06:00: Fair (0.45) · still limited by waves, tide/current
  • Sat 05:00: Fair (0.45) · still limited by waves, tide/current
  • Sat 08:00: Fair (0.44) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (71 hours)
  • Tide/current (71 hours)
  • Darkness (41 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: Fri 22:00

Fri 22:00, Sat 10:00, Sat 23:00, Sun 11:00, Sun 23:00, Mon 11:00

Nearby alternatives in Japan

Miyako

127 km away

❌ Poor

Kerama Islands

381 km away

❌ Poor

Okinawa - Blue Cave

438 km away

✅ Good

Advanced forecast data

Viewing historical data

Thu 19:00 – Sun 19:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.41 around Fri 12:00; 5 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 0.88m to 1.18m).

Wind is at or below 5.4m/s in 18/24 sampled hours (range 2.52 to 6.75m/s).

Tides range from 0.12m to 1.86m; 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
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
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
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
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
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
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 19:00 0.88 · high 5.72 · high 29.00 · good Poor
Thu 20:00 1.08 · high 5.72 · high 29.00 · good Poor
Thu 21:00 1.08 · high 5.72 · high 28.90 · good Poor
Thu 22:00 1.12 · high 6.00 · high 28.90 · good Poor
Thu 23:00 1.14 · high 6.75 · high 28.90 · good Poor
Fri 00:00 1.18 · high 5.06 · good 28.90 · good Fair
Fri 01:00 1.18 · high 5.20 · good 29.00 · good Poor
Fri 02:00 1.18 · high 5.32 · good 29.00 · good Poor
Fri 03:00 1.18 · high 4.78 · good 29.10 · good Fair
Fri 04:00 1.16 · high 4.13 · good 29.20 · good Poor
Fri 05:00 1.16 · high 5.47 · high 29.20 · good Poor
Fri 06:00 1.14 · high 5.21 · good 29.30 · good Fair
Fri 07:00 1.10 · high 5.22 · good 29.30 · good Fair
Fri 08:00 1.08 · high 4.86 · good 29.30 · good Fair
Fri 09:00 1.04 · high 4.21 · good 29.30 · good Poor
Fri 10:00 1.02 · high 5.36 · good 29.30 · good Poor
Fri 11:00 0.88 · high 4.69 · good 29.10 · good Poor
Fri 12:00 0.88 · high 2.94 · good 29.10 · good Poor
Fri 13:00 0.90 · high 3.64 · good 29.10 · good Poor
Fri 14:00 0.94 · high 3.78 · good 29.10 · good Poor
Fri 15:00 0.96 · high 3.56 · good 29.10 · good Poor
Fri 16:00 0.96 · high 3.65 · good 29.10 · good Poor
Fri 17:00 0.98 · high 3.56 · good 29.00 · good Poor
Fri 18:00 0.98 · high 2.52 · good 29.00 · good Poor
Fri 19:00 0.98 · high 3.17 · good 29.00 · good Poor
Fri 20:00 0.74 · high 4.10 · good 29.00 · good Poor
Fri 21:00 0.72 · high 2.77 · good 29.00 · good Poor
Fri 22:00 0.72 · high 2.47 · good 29.00 · good Poor
Fri 23:00 0.74 · high 2.86 · good 29.00 · good Poor
Sat 00:00 0.74 · high 4.04 · good 29.00 · good Fair
Sat 01:00 0.74 · high 4.20 · good 29.00 · good Fair
Sat 02:00 0.74 · high 4.48 · good 29.10 · good Fair
Sat 03:00 0.74 · high 4.10 · good 29.20 · good Poor
Sat 04:00 0.74 · high 3.72 · good 29.20 · good Fair
Sat 05:00 0.76 · high 3.97 · good 29.30 · good Fair
Sat 06:00 0.76 · high 4.00 · good 29.30 · good Fair
Sat 07:00 0.76 · high 4.02 · good 29.30 · good Fair
Sat 08:00 0.76 · high 4.00 · good 29.30 · good Fair
Sat 09:00 0.76 · high 3.63 · good 29.30 · good Fair
Sat 10:00 0.78 · high 3.80 · good 29.30 · good Poor
Sat 11:00 0.78 · high 4.35 · good 29.30 · good Poor
Sat 12:00 0.80 · high 3.92 · good 29.40 · good Poor
Sat 13:00 0.82 · high 3.66 · good 29.40 · good Poor
Sat 14:00 0.82 · high 3.86 · good 29.30 · good Poor
Sat 15:00 0.84 · high 3.68 · good 29.30 · good Poor
Sat 16:00 0.84 · high 3.75 · good 29.30 · good Poor
Sat 17:00 0.86 · high 3.39 · good 29.20 · good Poor
Sat 18:00 0.86 · high 4.37 · good 29.20 · good Poor
Sat 19:00 0.86 · high 4.13 · good 29.20 · good Poor
Sat 20:00 0.84 · high 4.25 · good 29.20 · good Poor
Sat 21:00 0.84 · high 3.99 · good 29.10 · good Poor
Sat 22:00 0.84 · high 4.04 · good 29.10 · good Poor
Sat 23:00 0.84 · high 4.49 · good 29.10 · good Poor
Sun 00:00 0.84 · high 4.63 · good 29.10 · good Fair
Sun 01:00 0.84 · high 5.13 · good 29.20 · good Fair
Sun 02:00 0.86 · high 5.21 · good 29.20 · good Fair
Sun 03:00 0.86 · high 5.31 · good 29.30 · good Fair
Sun 04:00 0.88 · high 5.08 · good 29.40 · good Poor
Sun 05:00 0.92 · high 6.19 · high 29.40 · good Poor
Sun 06:00 0.94 · high 6.12 · high 29.50 · good Poor
Sun 07:00 0.98 · high 6.51 · high 29.50 · good Poor
Sun 08:00 1.00 · high 6.14 · high 29.50 · good Poor
Sun 09:00 1.04 · high 5.87 · high 29.50 · good Poor
Sun 10:00 1.06 · high 6.11 · high 29.40 · good Poor
Sun 11:00 1.10 · high 5.77 · high 29.40 · good Poor
Sun 12:00 1.12 · high 6.47 · high 29.40 · good Poor
Sun 13:00 1.12 · high 6.20 · high 29.40 · good Poor
Sun 14:00 1.12 · high 5.29 · good 29.40 · good Poor
Sun 15:00 1.12 · high 4.27 · good 29.30 · good Poor
Sun 16:00 1.12 · high 4.88 · good 29.30 · good Poor
Sun 17:00 1.10 · high 4.96 · good 29.30 · good Poor
Sun 18:00 1.10 · high 4.17 · good 29.20 · good Poor