MARINE REPORT / 72 HOURS

Jeju Island Snorkel Report Today

South Korea · Updated Sat 16:15 (KST) · Source: Snapshot

The skinny

Poor Data updated Sat 16:15 (KST)

Jeju Island has no good model window later today. Check the three-day outlook and official beach advisories.

Right now (forecast)

Fair · 3.9/10

Sat 17:00 (KST)

Later today

No fresh data for this period.

Next three days

Good · 6.7/10

Tue 13:00 (KST)

Model estimates using Open-Meteo; not observations or safety guarantees. Check official advisories and conditions at the beach.

Score: 0.0/10

Best time: -

Main risk: Waves

No useful morning window is showing yet.

No useful afternoon window is showing yet.

Email me when it is good

Sunrise

06:39

Sunset

17:58

Water

25.3°C

Max air

22.9°C

Sky

Partly cloudy

38% cloud

Good model window in the next 72 hours

Next good model window: Tue 09:00–15:00 (10% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Saturday

❌ Poor conditions

Main blocker: Waves

Sunday

⚠️ Fair conditions

Main blocker: Waves

Monday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

The next good model window starts at Tue 09:00 and lasts until 15:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (70 hours)
  • Tide/current (62 hours)
  • Darkness (45 hours)

Jellyfish drift risk

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

Low · 34/100

Low peak drift risk around Sat 23:00.

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: Sun 00:00

Sun 00:00, Sun 15:00, Mon 01:00, Mon 17:00, Tue 04:00

Nearby alternatives in South Korea

No nearby alternatives available.

Advanced forecast data

Viewing historical data

Fri 17:00 – Mon 17:00 (KST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.5 around Fri 17:00; 10 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 0.52m to 0.94m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.78 to 4.44m/s).

Tides range from -0.72m to 1.56m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
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
Fri 17:00 0.64 · high 4.44 · good 26.30 · good Fair
Fri 18:00 0.64 · high 3.53 · good 26.30 · good Fair
Fri 19:00 0.62 · high 2.42 · good 26.30 · good Poor
Fri 20:00 0.58 · high 2.12 · good 26.20 · good Poor
Fri 21:00 0.56 · high 1.88 · good 26.20 · good Poor
Fri 22:00 0.54 · high 1.72 · good 26.20 · good Poor
Fri 23:00 0.54 · high 1.46 · good 26.20 · good Poor
Sat 00:00 0.52 · high 1.55 · good 26.20 · good Poor
Sat 01:00 0.52 · high 2.28 · good 26.20 · good Poor
Sat 02:00 0.52 · high 1.80 · good 26.20 · good Poor
Sat 03:00 0.52 · high 1.25 · good 26.20 · good Poor
Sat 04:00 0.52 · high 0.84 · good 26.20 · good Poor
Sat 05:00 0.54 · high 0.78 · good 26.10 · good Poor
Sat 06:00 0.54 · high 0.92 · good 26.10 · good Poor
Sat 07:00 0.54 · high 0.91 · good 26.10 · good Poor
Sat 08:00 0.52 · high 1.62 · good 26.10 · good Poor
Sat 09:00 0.52 · high 2.21 · good 26.10 · good Fair
Sat 10:00 0.54 · high 2.72 · good 26.20 · good Fair
Sat 11:00 0.54 · high 3.36 · good 26.20 · good Fair
Sat 12:00 0.56 · high 3.83 · good 26.30 · good Fair
Sat 13:00 0.64 · high 4.00 · good 26.40 · good Fair
Sat 14:00 0.74 · high 3.49 · good 26.40 · good Fair
Sat 15:00 0.82 · high 3.96 · good 26.50 · good Fair
Sat 16:00 0.94 · high 3.42 · good 26.50 · good Fair
Sat 17:00 1.06 · high 3.51 · good 26.50 · good Fair
Sat 18:00 1.18 · high 3.10 · good 26.40 · good Fair
Sat 19:00 1.20 · high 2.21 · good 26.40 · good Poor
Sat 20:00 0.60 · high 2.30 · good 26.20 · good Poor
Sat 21:00 0.66 · high 3.34 · good 26.20 · good Poor
Sat 22:00 0.76 · high 2.57 · good 26.20 · good Poor
Sat 23:00 0.86 · high 2.08 · good 26.20 · good Poor
Sun 00:00 0.96 · high 3.14 · good 26.10 · good Poor
Sun 01:00 1.24 · high 4.53 · good 26.10 · good Poor
Sun 02:00 1.28 · high 4.22 · good 26.10 · good Poor
Sun 03:00 1.32 · high 3.86 · good 26.10 · good Poor
Sun 04:00 1.30 · high 3.65 · good 26.10 · good Poor
Sun 05:00 1.26 · high 3.31 · good 26.10 · good Poor
Sun 06:00 1.24 · high 3.81 · good 26.10 · good Poor
Sun 07:00 1.22 · high 3.95 · good 26.10 · good Poor
Sun 08:00 1.18 · high 4.27 · good 26.10 · good Poor
Sun 09:00 1.16 · high 2.91 · good 26.10 · good Poor
Sun 10:00 1.14 · high 3.30 · good 26.10 · good Poor
Sun 11:00 1.10 · high 3.43 · good 26.20 · good Poor
Sun 12:00 1.08 · high 3.22 · good 26.20 · good Poor
Sun 13:00 1.06 · high 3.53 · good 26.20 · good Fair
Sun 14:00 1.04 · high 3.45 · good 26.30 · good Poor
Sun 15:00 1.02 · high 3.26 · good 26.30 · good Poor
Sun 16:00 1.02 · high 3.80 · good 26.30 · good Poor
Sun 17:00 1.02 · high 3.24 · good 26.30 · good Poor
Sun 18:00 1.02 · high 2.89 · good 26.20 · good Fair
Sun 19:00 1.02 · high 3.32 · good 26.20 · good Poor
Sun 20:00 1.08 · high 2.97 · good 25.80 · good Poor
Sun 21:00 1.08 · high 2.93 · good 25.80 · good Poor
Sun 22:00 1.08 · high 3.22 · good 25.80 · good Poor
Sun 23:00 1.06 · high 3.18 · good 25.80 · good Poor
Mon 00:00 1.06 · high 2.90 · good 25.80 · good Poor
Mon 01:00 1.04 · high 2.40 · good 25.80 · good Poor
Mon 02:00 1.02 · high 2.21 · good 25.80 · good Poor
Mon 03:00 0.98 · high 1.87 · good 25.80 · good Poor
Mon 04:00 0.98 · high 1.35 · good 25.80 · good Poor
Mon 05:00 0.96 · high 2.10 · good 25.80 · good Poor
Mon 06:00 0.96 · high 2.93 · good 25.70 · good Poor
Mon 07:00 0.94 · high 2.40 · good 25.70 · good Poor
Mon 08:00 0.92 · high 2.53 · good 25.70 · good Poor
Mon 09:00 0.90 · high 3.00 · good 25.80 · good Poor
Mon 10:00 0.90 · high 3.41 · good 25.80 · good Poor
Mon 11:00 0.88 · high 2.93 · good 25.90 · good Poor
Mon 12:00 0.88 · high 2.91 · good 26.10 · good Poor
Mon 13:00 0.88 · high 1.99 · good 26.20 · good Fair
Mon 14:00 0.86 · high 1.89 · good 26.30 · good Fair
Mon 15:00 0.86 · high 1.27 · good 26.30 · good Fair
Mon 16:00 0.86 · high 3.13 · good 26.30 · good Poor