MARINE REPORT / 72 HOURS

Jeju Island Snorkel Report Today

South Korea · Updated Sat 19:44 (KST) · Source: Snapshot

The skinny

Poor Data updated Sat 19:44 (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

Sat 21:00 (KST)

Later today

No fresh data for this period.

Next three days

Good · 6.5/10

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

25.2°C

Max air

22.8°C

Sky

Partly cloudy

52% cloud

Good model window in the next 72 hours

Next good model window: Tue 09:00–14:00 (9% 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 14:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (69 hours)
  • Tide/current (61 hours)
  • Darkness (42 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

Mon 21:00 – Thu 21:00 (KST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.55 around Tue 12:00; 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 0.62m to 0.86m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.35 to 3.84m/s).

Tides range from -0.39m to 1.35m; 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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Good 🌟 Good
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
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
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
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Fair ⚠️ Fair
Good 🌟 Good
Good 🌟 Good
Fair ⚠️ Fair
Fair ⚠️ Fair
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
Mon 21:00 0.86 · high 0.67 · good 26.30 · good Poor
Mon 22:00 0.84 · high 0.49 · good 26.30 · good Poor
Mon 23:00 0.80 · high 0.53 · good 26.30 · good Poor
Tue 00:00 0.78 · high 0.64 · good 26.20 · good Poor
Tue 01:00 0.76 · high 0.78 · good 26.20 · good Poor
Tue 02:00 0.74 · high 1.84 · good 26.20 · good Poor
Tue 03:00 0.70 · high 0.82 · good 26.20 · good Poor
Tue 04:00 0.68 · high 0.79 · good 26.20 · good Poor
Tue 05:00 0.66 · high 1.17 · good 26.20 · good Poor
Tue 06:00 0.64 · high 0.72 · good 26.20 · good Poor
Tue 07:00 0.64 · high 0.96 · good 26.20 · good Poor
Tue 08:00 0.62 · high 1.71 · good 26.20 · good Poor
Tue 09:00 0.62 · high 0.83 · good 26.20 · good Fair
Tue 10:00 0.62 · high 0.65 · good 26.30 · good Fair
Tue 11:00 0.64 · high 0.47 · good 26.30 · good Fair
Tue 12:00 0.64 · high 0.67 · good 26.30 · good Good
Tue 13:00 0.66 · high 3.80 · good 26.40 · good Fair
Tue 14:00 0.70 · high 3.84 · good 26.40 · good Fair
Tue 15:00 0.72 · high 3.56 · good 26.40 · good Fair
Tue 16:00 0.76 · high 2.04 · good 26.40 · good Fair
Tue 17:00 0.80 · high 2.51 · good 26.40 · good Fair
Tue 18:00 0.84 · high 2.13 · good 26.40 · good Fair
Tue 19:00 0.80 · high 0.35 · good 26.30 · good Poor
Tue 20:00 0.68 · high 0.54 · good 26.30 · good Poor
Tue 21:00 0.64 · high 0.36 · good 26.30 · good Poor
Tue 22:00 0.60 · high 0.40 · good 26.30 · good Poor
Tue 23:00 0.56 · high 0.35 · good 26.30 · good Poor
Wed 00:00 0.52 · high 0.56 · good 26.30 · good Poor
Wed 01:00 0.50 · high 2.86 · good 26.30 · good Poor
Wed 02:00 0.50 · high 1.28 · good 26.30 · good Poor
Wed 03:00 0.48 · high 0.85 · good 26.30 · good Poor
Wed 04:00 0.46 · high 0.64 · good 26.30 · good Poor
Wed 05:00 0.46 · high 0.65 · good 26.30 · good Poor
Wed 06:00 0.44 · high 0.43 · good 26.30 · good Poor
Wed 07:00 0.44 · high 0.35 · good 26.30 · good Poor
Wed 08:00 0.46 · high 1.66 · good 26.30 · good Poor
Wed 09:00 0.46 · high 2.04 · good 26.30 · good Good
Wed 10:00 0.44 · high 1.21 · good 26.30 · good Good
Wed 11:00 0.44 · high 1.00 · good 26.30 · good Good
Wed 12:00 0.42 · high 1.04 · good 26.40 · good Good
Wed 13:00 0.42 · high 1.98 · good 26.40 · good Good
Wed 14:00 0.42 · high 1.72 · good 26.50 · good Good
Wed 15:00 0.42 · high 1.43 · good 26.50 · good Good
Wed 16:00 0.40 · high 0.29 · good 26.50 · good Excellent
Wed 17:00 0.40 · high 0.90 · good 26.40 · good Good
Wed 18:00 0.38 · high 1.10 · good 26.40 · good Good
Wed 19:00 0.36 · good 0.36 · good 26.40 · good Poor
Wed 20:00 0.36 · good 0.07 · good 26.40 · good Poor
Wed 21:00 0.34 · good 0.22 · good 26.30 · good Poor
Wed 22:00 0.32 · good 0.32 · good 26.30 · good Poor
Wed 23:00 0.32 · good 0.49 · good 26.30 · good Poor
Thu 00:00 0.30 · good 0.46 · good 26.30 · good Poor
Thu 01:00 0.28 · good 2.36 · good 26.30 · good Poor
Thu 02:00 0.28 · good 1.69 · good 26.30 · good Poor
Thu 03:00 0.26 · good 0.99 · good 26.30 · good Poor
Thu 04:00 0.28 · good 0.72 · good 26.30 · good Poor
Thu 05:00 0.28 · good 1.06 · good 26.30 · good Poor
Thu 06:00 0.30 · good 1.35 · good 26.30 · good Poor
Thu 07:00 0.32 · good 1.62 · good 26.30 · good Poor
Thu 08:00 0.32 · good 2.35 · good 26.30 · good Poor
Thu 09:00 0.28 · good 2.70 · good 26.30 · good Good
Thu 10:00 0.30 · good 3.04 · good 26.30 · good Good
Thu 11:00 0.32 · good 3.25 · good 26.30 · good Good
Thu 12:00 0.34 · good 3.37 · good 26.30 · good Good
Thu 13:00 0.38 · high 3.54 · good 26.30 · good Good
Thu 14:00 0.44 · high 4.60 · good 26.30 · good Fair
Thu 15:00 0.48 · high 4.50 · good 26.30 · good Good
Thu 16:00 0.52 · high 4.19 · good 26.30 · good Good
Thu 17:00 0.58 · high 3.78 · good 26.30 · good Fair
Thu 18:00 0.62 · high 3.23 · good 26.30 · good Fair
Thu 19:00 0.60 · high 1.65 · good 26.30 · good Poor
Thu 20:00 0.54 · high 2.13 · good 26.30 · good Poor