MARINE REPORT / 72 HOURS

Jeju Island Snorkel Report Today

South Korea · Updated Sun 17:56 (KST) · Source: Snapshot

The skinny

Poor Data updated Sun 17:56 (KST)

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

Right now (forecast)

Poor · 0.0/10

Sun 18:00 (KST)

Later today

No fresh data for this period.

Next three days

Good · 5.8/10

Tue 11:00 (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

06:40

Sunset

17:57

Water

25.2°C

Max air

24.3°C

Sky

Partly cloudy

65% cloud

Good model window in the next 72 hours

Next good model window: Tue 11:00–13:00 (4% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Sunday

❌ Poor conditions

Main blocker: Waves

Monday

⚠️ Fair conditions

Main blocker: Waves

Tuesday

✅ Good conditions

Main blocker: Waves

Best available hours

The next good model window starts at Tue 11:00 and lasts until 13:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (70 hours)
  • Tide/current (60 hours)
  • Darkness (44 hours)

Jellyfish drift risk

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

Low · 34/100

Low peak drift risk around Sun 20:00.

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: Mon 01:00

Mon 01:00, Mon 17:00, Tue 04:00, Tue 18:00, Wed 06:00

Nearby alternatives in South Korea

No nearby alternatives available.

Advanced forecast data

Viewing historical data

Fri 18:00 – Mon 18:00 (KST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.44 around Sat 12:00; 7 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 1.22m to 1.44m).

Wind is at or below 5.4m/s in 13/24 sampled hours (range 4.11 to 5.83m/s).

Tides range from -0.12m to 0.77m; 0 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
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
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
Good 🌟 Good
Good 🌟 Good
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 18:00 1.28 · high 5.48 · high 27.00 · good Fair
Fri 19:00 1.30 · high 5.70 · high 27.00 · good Poor
Fri 20:00 1.38 · high 5.41 · high 26.90 · good Poor
Fri 21:00 1.40 · high 5.52 · high 26.90 · good Poor
Fri 22:00 1.42 · high 5.49 · high 26.90 · good Poor
Fri 23:00 1.42 · high 4.98 · good 26.90 · good Poor
Sat 00:00 1.44 · high 4.79 · good 26.90 · good Poor
Sat 01:00 1.42 · high 4.62 · good 26.90 · good Poor
Sat 02:00 1.40 · high 4.43 · good 26.90 · good Poor
Sat 03:00 1.38 · high 4.38 · good 26.90 · good Poor
Sat 04:00 1.36 · high 4.43 · good 26.90 · good Poor
Sat 05:00 1.32 · high 4.35 · good 26.90 · good Poor
Sat 06:00 1.30 · high 4.11 · good 26.90 · good Poor
Sat 07:00 1.30 · high 4.30 · good 26.90 · good Poor
Sat 08:00 1.28 · high 4.96 · good 26.90 · good Poor
Sat 09:00 1.26 · high 5.45 · high 26.90 · good Fair
Sat 10:00 1.28 · high 5.52 · high 26.90 · good Fair
Sat 11:00 1.28 · high 5.37 · good 26.90 · good Fair
Sat 12:00 1.30 · high 5.28 · good 26.90 · good Fair
Sat 13:00 1.32 · high 5.83 · high 26.90 · good Fair
Sat 14:00 1.32 · high 5.76 · high 27.00 · good Poor
Sat 15:00 1.34 · high 5.70 · high 27.00 · good Poor
Sat 16:00 1.28 · high 5.59 · high 27.00 · good Fair
Sat 17:00 1.22 · high 5.40 · good 27.00 · good Poor
Sat 18:00 1.16 · high 4.92 · good 27.00 · good Fair
Sat 19:00 1.12 · high 3.58 · good 26.90 · good Poor
Sat 20:00 1.06 · high 3.10 · good 26.90 · good Poor
Sat 21:00 1.14 · high 4.01 · good 27.00 · good Poor
Sat 22:00 1.14 · high 4.29 · good 27.00 · good Poor
Sat 23:00 1.16 · high 4.07 · good 27.00 · good Poor
Sun 00:00 1.16 · high 3.76 · good 27.00 · good Poor
Sun 01:00 1.16 · high 3.22 · good 27.00 · good Poor
Sun 02:00 1.18 · high 3.47 · good 27.00 · good Poor
Sun 03:00 1.18 · high 3.55 · good 27.00 · good Poor
Sun 04:00 1.12 · high 1.38 · good 27.00 · good Poor
Sun 05:00 1.08 · high 1.54 · good 27.00 · good Poor
Sun 06:00 1.06 · high 1.51 · good 26.90 · good Poor
Sun 07:00 1.04 · high 2.06 · good 26.90 · good Poor
Sun 08:00 1.04 · high 2.41 · good 26.90 · good Poor
Sun 09:00 1.02 · high 2.90 · good 27.00 · good Fair
Sun 10:00 1.00 · high 3.90 · good 27.00 · good Fair
Sun 11:00 1.00 · high 3.69 · good 27.10 · good Fair
Sun 12:00 0.98 · high 2.75 · good 27.20 · good Fair
Sun 13:00 0.98 · high 3.14 · good 27.30 · good Fair
Sun 14:00 0.96 · high 3.58 · good 27.40 · good Fair
Sun 15:00 0.96 · high 3.44 · good 27.40 · good Fair
Sun 16:00 0.94 · high 0.47 · good 27.40 · good Fair
Sun 17:00 0.92 · high 0.45 · good 27.40 · good Fair
Sun 18:00 0.90 · high 0.46 · good 27.40 · good Fair
Sun 19:00 0.88 · high 0.38 · good 27.30 · good Poor
Sun 20:00 0.78 · high 0.21 · good 27.20 · good Poor
Sun 21:00 0.78 · high 0.25 · good 27.20 · good Poor
Sun 22:00 0.76 · high 0.42 · good 27.10 · good Poor
Sun 23:00 0.76 · high 0.45 · good 27.10 · good Poor
Mon 00:00 0.78 · high 1.10 · good 27.00 · good Poor
Mon 01:00 0.78 · high 0.71 · good 27.00 · good Poor
Mon 02:00 0.76 · high 0.82 · good 26.90 · good Poor
Mon 03:00 0.76 · high 0.32 · good 26.90 · good Poor
Mon 04:00 0.76 · high 0.28 · good 26.80 · good Poor
Mon 05:00 0.74 · high 0.46 · good 26.80 · good Poor
Mon 06:00 0.74 · high 0.39 · good 26.80 · good Poor
Mon 07:00 0.74 · high 0.20 · good 26.80 · good Poor
Mon 08:00 0.72 · high 0.16 · good 26.80 · good Poor
Mon 09:00 0.72 · high 0.60 · good 26.80 · good Fair
Mon 10:00 0.70 · high 0.90 · good 26.80 · good Fair
Mon 11:00 0.68 · high 1.40 · good 26.90 · good Fair
Mon 12:00 0.66 · high 1.76 · good 27.00 · good Fair
Mon 13:00 0.64 · high 2.16 · good 27.10 · good Fair
Mon 14:00 0.64 · high 2.38 · good 27.20 · good Fair
Mon 15:00 0.62 · high 1.96 · good 27.30 · good Fair
Mon 16:00 0.60 · high 0.93 · good 27.30 · good Good
Mon 17:00 0.60 · high 0.67 · good 27.20 · good Good