SnorkelForecast.com

Jeju Island Snorkel Report Today

South Korea · Updated Tue 04:16 (KST) · Source: Snapshot

The skinny

Marginal Report Tue 18:47

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

Score: 4.7/10

Best time: Thu 14:00

Main risk: Waves

No useful morning window is showing yet.

Best afternoon signal: Tue 19:00 (Fair). Peak afternoon wind is about 3.3 m/s.

Email me when it is good

Sunrise

05:39

Sunset

19:41

Water

27.8°C

Max air

27.4°C

Sky

Cloudy

72% cloud

No safe 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

Tuesday

⚠️ fair conditions

Main blocker: Waves

Wednesday

⚠️ fair conditions

Main blocker: Waves

Thursday

⚠️ fair conditions

Main blocker: Waves

Best available hours

  • Thu 05:00 — Fair (0.51) · still limited by waves, tide/current
  • Thu 06:00 — Fair (0.50) · still limited by waves, tide/current
  • Fri 03:00 — Fair (0.50) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (66 hours)
  • Tide/current (66 hours)
  • Darkness (39 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 17:00

Tue 17:00, Wed 07:00, Wed 18:00, Thu 09:00, Thu 19:00

Nearby alternatives in South Korea

No nearby alternatives available.

Advanced forecast data

Viewing historical data

Wed 09:00 – Sat 09:00 (KST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.43 around Thu 11:00; 6 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 1.0m to 1.42m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 1.1 to 5.06m/s).

Tides range from -1.11m to 1.93m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
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
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
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
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
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 and safety gate (outside daylight scores lower).
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Wed 09:00 1.42 · high 5.06 · good 25.50 · good poor
Wed 10:00 1.40 · high 4.66 · good 25.40 · good fair
Wed 11:00 1.36 · high 4.07 · good 25.40 · good poor
Wed 12:00 1.34 · high 2.95 · good 25.40 · good poor
Wed 13:00 1.32 · high 1.30 · good 25.40 · good poor
Wed 14:00 1.30 · high 1.10 · good 25.40 · good poor
Wed 15:00 1.28 · high 2.12 · good 25.40 · good poor
Wed 16:00 1.24 · high 2.66 · good 25.40 · good poor
Wed 17:00 1.22 · high 2.95 · good 25.40 · good poor
Wed 18:00 1.18 · high 3.23 · good 25.40 · good poor
Wed 19:00 1.16 · high 3.36 · good 25.40 · good poor
Wed 20:00 1.16 · high 2.95 · good 25.40 · good poor
Wed 21:00 1.14 · high 2.47 · good 25.40 · good poor
Wed 22:00 1.12 · high 2.73 · good 25.40 · good poor
Wed 23:00 1.08 · high 2.06 · good 25.50 · good poor
Thu 00:00 1.06 · high 1.44 · good 25.50 · good fair
Thu 01:00 1.04 · high 1.56 · good 25.60 · good fair
Thu 02:00 1.04 · high 1.50 · good 25.80 · good fair
Thu 03:00 1.02 · high 1.92 · good 26.00 · good fair
Thu 04:00 1.02 · high 1.94 · good 26.10 · good fair
Thu 05:00 1.02 · high 1.89 · good 26.30 · good poor
Thu 06:00 1.02 · high 1.66 · good 26.40 · good poor
Thu 07:00 1.00 · high 1.94 · good 26.40 · good poor
Thu 08:00 1.00 · high 2.00 · good 26.40 · good poor
Thu 09:00 0.98 · high 2.11 · good 26.40 · good fair
Thu 10:00 1.00 · high 2.06 · good 26.40 · good fair
Thu 11:00 1.00 · high 1.80 · good 26.40 · good poor
Thu 12:00 1.02 · high 1.88 · good 26.40 · good poor
Thu 13:00 1.02 · high 1.90 · good 26.40 · good poor
Thu 14:00 1.02 · high 1.75 · good 26.30 · good poor
Thu 15:00 1.02 · high 1.87 · good 26.30 · good poor
Thu 16:00 1.02 · high 2.09 · good 26.20 · good poor
Thu 17:00 1.02 · high 2.12 · good 26.20 · good poor
Thu 18:00 1.02 · high 2.28 · good 26.20 · good poor
Thu 19:00 1.02 · high 2.38 · good 26.20 · good poor
Thu 20:00 1.02 · high 2.28 · good 26.10 · good poor
Thu 21:00 1.02 · high 2.42 · good 26.10 · good poor
Thu 22:00 1.00 · high 2.24 · good 26.10 · good poor
Thu 23:00 1.00 · high 1.84 · good 26.10 · good poor
Fri 00:00 0.98 · high 2.06 · good 26.20 · good fair
Fri 01:00 0.96 · high 2.55 · good 26.20 · good fair
Fri 02:00 0.94 · high 3.18 · good 26.40 · good fair
Fri 03:00 0.92 · high 3.42 · good 26.50 · good poor
Fri 04:00 0.92 · high 3.77 · good 26.60 · good fair
Fri 05:00 0.90 · high 3.85 · good 26.70 · good poor
Fri 06:00 0.90 · high 3.38 · good 26.70 · good poor
Fri 07:00 0.88 · high 3.12 · good 26.70 · good poor
Fri 08:00 0.88 · high 2.69 · good 26.60 · good poor
Fri 09:00 0.86 · high 2.33 · good 26.50 · good fair
Fri 10:00 0.84 · high 1.98 · good 26.40 · good fair
Fri 11:00 0.84 · high 1.50 · good 26.30 · good poor
Fri 12:00 0.82 · high 1.58 · good 26.30 · good poor
Fri 13:00 0.82 · high 1.49 · good 26.20 · good poor
Fri 14:00 0.84 · high 2.06 · good 26.20 · good poor
Fri 15:00 0.84 · high 2.22 · good 26.20 · good poor
Fri 16:00 0.86 · high 2.36 · good 26.20 · good poor
Fri 17:00 0.88 · high 2.50 · good 26.20 · good poor
Fri 18:00 0.90 · high 2.33 · good 26.20 · good poor
Fri 19:00 0.90 · high 2.20 · good 26.20 · good poor
Fri 20:00 0.92 · high 2.19 · good 26.20 · good poor
Fri 21:00 0.92 · high 1.98 · good 26.10 · good poor
Fri 22:00 0.92 · high 1.78 · good 26.20 · good poor
Fri 23:00 0.92 · high 1.77 · good 26.20 · good poor
Sat 00:00 0.92 · high 1.70 · good 26.20 · good fair
Sat 01:00 0.92 · high 1.97 · good 26.30 · good fair
Sat 02:00 0.90 · high 2.28 · good 26.40 · good poor
Sat 03:00 0.90 · high 2.56 · good 26.60 · good poor
Sat 04:00 0.90 · high 3.28 · good 26.80 · good fair
Sat 05:00 0.90 · high 3.11 · good 26.90 · good fair
Sat 06:00 0.96 · high 3.47 · good 28.30 · good fair
Sat 07:00 0.96 · high 3.12 · good 28.40 · good fair
Sat 08:00 0.94 · high 2.86 · good 28.30 · good fair