SnorkelForecast.com

Jeju Island Snorkel Report Today

South Korea · Updated Sat 05:04 (KST) · Source: Snapshot

The skinny

Marginal Report Sun 05:52

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

Score: 4.8/10

Best time: Mon 15:00

Main risk: Waves

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

Best afternoon signal: Sun 14:00 (Fair). Peak afternoon wind is about 3.5 m/s.

Email me when it is good

Sunrise

05:37

Sunset

19:42

Water

27.3°C

Max air

29.3°C

Sky

Partly cloudy

69% 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

Sunday

⚠️ fair conditions

Main blocker: Waves

Monday

⚠️ fair conditions

Main blocker: Waves

Tuesday

⚠️ fair conditions

Main blocker: Waves

Best available hours

  • Mon 06:00 — Fair (0.50) · still limited by waves
  • Sun 05:00 — Fair (0.48) · still limited by waves, tide/current
  • Mon 02:00 — Fair (0.47) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (56 hours)
  • Tide/current (52 hours)
  • Darkness (29 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: Sun 16:00

Sun 04:00, Sun 16:00, Mon 05:00, Mon 17:00

Nearby alternatives in South Korea

No nearby alternatives available.

Advanced forecast data

Viewing live forecast

Sat 20:00 – Tue 20:00 (KST)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.48 around Sun 14:00; 11 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 0.84m to 0.96m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 1.7 to 3.45m/s).

Tides range from -0.44m to 1.26m; 2 of 24 hours are in or near peak slack windows.

72-hour forecast overview
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
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
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
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
Sat 21:00 0.94 · high 1.86 · good 27.30 · good poor
Sat 22:00 0.94 · high 2.05 · good 27.20 · good poor
Sat 23:00 0.92 · high 1.84 · good 27.10 · good poor
Sun 00:00 0.92 · high 2.13 · good 27.10 · good fair
Sun 01:00 0.92 · high 2.30 · good 27.20 · good fair
Sun 02:00 0.90 · high 2.44 · good 27.50 · good fair
Sun 03:00 0.90 · high 2.64 · good 27.70 · good fair
Sun 04:00 0.90 · high 2.77 · good 28.00 · good fair
Sun 05:00 0.88 · high 3.02 · good 28.20 · good fair
Sun 06:00 0.88 · high 3.36 · good 28.40 · good fair
Sun 07:00 0.88 · high 3.45 · good 28.40 · good fair
Sun 08:00 0.86 · high 3.26 · good 28.50 · good fair
Sun 09:00 0.86 · high 3.19 · good 28.40 · good fair
Sun 10:00 0.86 · high 2.66 · good 28.40 · good fair
Sun 11:00 0.84 · high 2.14 · good 28.30 · good poor
Sun 12:00 0.84 · high 1.70 · good 28.30 · good poor
Sun 13:00 0.84 · high 1.84 · good 28.20 · good poor
Sun 14:00 0.84 · high 1.77 · good 28.20 · good poor
Sun 15:00 0.84 · high 1.78 · good 28.10 · good poor
Sun 16:00 0.86 · high 1.92 · good 28.00 · good poor
Sun 17:00 0.88 · high 2.30 · good 28.00 · good poor
Sun 18:00 0.90 · high 2.33 · good 27.90 · good poor
Sun 19:00 0.92 · high 1.92 · good 27.80 · good poor
Sun 20:00 0.96 · high 1.97 · good 27.70 · good poor
Sun 21:00 0.98 · high 1.97 · good 27.60 · good poor
Sun 22:00 1.00 · high 2.06 · good 27.40 · good poor
Sun 23:00 1.02 · high 2.20 · good 27.40 · good poor
Mon 00:00 1.04 · high 2.28 · good 27.30 · good poor
Mon 01:00 1.04 · high 2.24 · good 27.30 · good fair
Mon 02:00 1.04 · high 2.70 · good 27.40 · good fair
Mon 03:00 1.04 · high 3.75 · good 27.50 · good fair
Mon 04:00 1.06 · high 4.24 · good 27.60 · good fair
Mon 05:00 1.06 · high 4.25 · good 27.70 · good fair
Mon 06:00 1.08 · high 4.03 · good 27.70 · good fair
Mon 07:00 1.10 · high 3.75 · good 27.70 · good fair
Mon 08:00 1.12 · high 2.97 · good 27.70 · good fair
Mon 09:00 1.14 · high 2.42 · good 27.70 · good fair
Mon 10:00 1.14 · high 1.70 · good 27.70 · good fair
Mon 11:00 1.16 · high 0.72 · good 27.70 · good poor
Mon 12:00 1.16 · high 0.50 · good 27.60 · good poor
Mon 13:00 1.16 · high 0.85 · good 27.60 · good poor
Mon 14:00 1.16 · high 1.30 · good 27.50 · good poor
Mon 15:00 1.16 · high 1.51 · good 27.50 · good poor
Mon 16:00 1.16 · high 2.23 · good 27.40 · good poor
Mon 17:00 1.16 · high 2.82 · good 27.30 · good poor
Mon 18:00 1.16 · high 3.37 · good 27.30 · good poor
Mon 19:00 1.16 · high 3.80 · good 27.20 · good poor
Mon 20:00 1.14 · high 3.87 · good 27.20 · good poor
Mon 21:00 1.14 · high 4.06 · good 27.20 · good poor
Mon 22:00 1.14 · high 4.33 · good 27.10 · good poor
Mon 23:00 1.14 · high 4.82 · good 27.10 · good poor
Tue 00:00 1.14 · high 4.74 · good 27.10 · good fair
Tue 01:00 1.14 · high 4.42 · good 27.10 · good poor
Tue 02:00 1.12 · high 4.56 · good 27.20 · good poor
Tue 03:00 1.12 · high 4.47 · good 27.20 · good poor
Tue 04:00 1.12 · high 4.42 · good 27.30 · good fair