SnorkelForecast.com

Jeju Island Snorkel Report Today

South Korea · Updated Tue 19:59 (KST) · Source: Snapshot

The skinny

Marginal Report Wed 08:24

Jeju Island looks marginal today. The least-bad daylight window is around Thu 09:00, but waves is limiting the forecast.

Score: 5.1/10

Best time: Thu 09:00

Main risk: Waves

Best morning signal: Wed 09:00 (Fair).

Best afternoon signal: Wed 16:00 (Fair). Peak afternoon wind is about 3.5 m/s.

Email me when it is good

Sunrise

06:08

Sunset

18:58

Water

29.4°C

Max air

29.5°C

Sky

Clear

19% cloud

No good model 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

Wednesday

⚠️ Fair conditions

Main blocker: Waves

Thursday

⚠️ Fair conditions

Main blocker: Waves

Friday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

  • Thu 00:00: Fair (0.52) · still limited by waves, tide/current
  • Wed 00:00: Fair (0.51) · still limited by waves
  • Wed 07:00: Fair (0.50) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (67 hours)
  • Tide/current (60 hours)
  • Darkness (37 hours)

Jellyfish drift risk

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

Low · 34/100

Low peak drift risk around Wed 10:00.

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: Wed 15:00

Wed 04:00, Wed 15:00, Thu 04:00, Thu 16:00, Fri 06:00, Fri 17:00

Nearby alternatives in South Korea

No nearby alternatives available.

Advanced forecast data

Viewing current forecast

Tue 23:00 – Fri 23:00 (KST)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.51 around Wed 09:00; 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 0.86m to 1.02m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 2.15 to 3.47m/s).

Tides range from -0.46m to 1.4m; 2 of 24 hours are in or near peak slack windows.

72-hour forecast overview
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
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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
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
Wed 00:00 0.90 · high 3.04 · good 29.40 · good Fair
Wed 01:00 0.92 · high 2.94 · good 29.50 · good Fair
Wed 02:00 0.94 · high 2.92 · good 29.50 · good Fair
Wed 03:00 0.96 · high 3.16 · good 29.60 · good Fair
Wed 04:00 0.96 · high 3.32 · good 29.60 · good Fair
Wed 05:00 0.98 · high 3.47 · good 29.70 · good Fair
Wed 06:00 0.98 · high 2.96 · good 29.70 · good Fair
Wed 07:00 1.00 · high 3.03 · good 29.70 · good Fair
Wed 08:00 1.00 · high 2.80 · good 29.70 · good Fair
Wed 09:00 1.02 · high 2.42 · good 29.60 · good Fair
Wed 10:00 1.00 · high 2.21 · good 29.60 · good Poor
Wed 11:00 1.00 · high 2.36 · good 29.60 · good Poor
Wed 12:00 0.98 · high 2.30 · good 29.60 · good Poor
Wed 13:00 0.96 · high 2.62 · good 29.60 · good Poor
Wed 14:00 0.96 · high 2.62 · good 29.50 · good Poor
Wed 15:00 0.94 · high 2.66 · good 29.50 · good Poor
Wed 16:00 0.92 · high 2.73 · good 29.50 · good Poor
Wed 17:00 0.92 · high 2.73 · good 29.50 · good Poor
Wed 18:00 0.90 · high 3.05 · good 29.50 · good Poor
Wed 19:00 0.88 · high 3.16 · good 29.50 · good Poor
Wed 20:00 0.88 · high 2.62 · good 29.50 · good Poor
Wed 21:00 0.86 · high 2.50 · good 29.50 · good Poor
Wed 22:00 0.86 · high 2.56 · good 29.50 · good Poor
Wed 23:00 0.86 · high 2.15 · good 29.50 · good Poor
Thu 00:00 0.86 · high 2.28 · good 29.50 · good Fair
Thu 01:00 0.88 · high 2.98 · good 29.50 · good Fair
Thu 02:00 0.90 · high 3.42 · good 29.60 · good Fair
Thu 03:00 0.92 · high 4.00 · good 29.60 · good Fair
Thu 04:00 0.94 · high 4.30 · good 29.70 · good Fair
Thu 05:00 0.98 · high 3.09 · good 29.70 · good Fair
Thu 06:00 1.00 · high 2.84 · good 29.70 · good Fair
Thu 07:00 1.02 · high 3.16 · good 29.70 · good Fair
Thu 08:00 1.04 · high 3.54 · good 29.70 · good Fair
Thu 09:00 1.06 · high 3.82 · good 29.70 · good Fair
Thu 10:00 1.10 · high 4.24 · good 29.60 · good Poor
Thu 11:00 1.12 · high 4.53 · good 29.60 · good Poor
Thu 12:00 1.16 · high 4.55 · good 29.60 · good Poor
Thu 13:00 1.20 · high 4.82 · good 29.60 · good Poor
Thu 14:00 1.26 · high 4.74 · good 29.50 · good Poor
Thu 15:00 1.30 · high 4.56 · good 29.50 · good Poor
Thu 16:00 1.36 · high 4.81 · good 29.50 · good Poor
Thu 17:00 1.44 · high 5.66 · high 29.50 · good Poor
Thu 18:00 1.50 · high 5.95 · high 29.50 · good Poor
Thu 19:00 1.58 · high 6.67 · high 29.50 · good Poor
Thu 20:00 1.66 · high 7.11 · high 29.40 · good Poor
Thu 21:00 1.74 · high 7.95 · high 29.40 · good Poor
Thu 22:00 1.80 · high 8.13 · high 29.40 · good Poor
Thu 23:00 1.86 · high 8.42 · high 29.40 · good Poor
Fri 00:00 1.92 · high 8.80 · high 29.40 · good Poor
Fri 01:00 2.00 · high 8.89 · high 29.40 · good Fair
Fri 02:00 2.08 · high 9.52 · high 29.40 · good Poor
Fri 03:00 2.16 · high 9.77 · high 29.40 · good Poor
Fri 04:00 2.18 · high 9.77 · high 29.40 · good Poor
Fri 05:00 2.18 · high 9.60 · high 29.40 · good Poor
Fri 06:00 2.20 · high 9.42 · high 29.40 · good Poor
Fri 07:00 2.32 · high 9.14 · high 29.40 · good Poor
Fri 08:00 2.42 · high 8.78 · high 29.40 · good Poor
Fri 09:00 2.54 · high 8.22 · high 29.40 · good Fair
Fri 10:00 2.56 · high 7.36 · high 29.40 · good Poor
Fri 11:00 2.56 · high 6.86 · high 29.30 · good Poor
Fri 12:00 2.58 · high 6.25 · high 29.30 · good Poor
Fri 13:00 2.52 · high 5.87 · high 29.30 · good Poor
Fri 14:00 2.48 · high 5.56 · high 29.30 · good Poor
Fri 15:00 2.42 · high 5.36 · good 29.20 · good Poor
Fri 16:00 2.44 · high 4.89 · good 29.20 · good Poor
Fri 17:00 2.44 · high 4.70 · good 29.20 · good Poor
Fri 18:00 2.46 · high 4.86 · good 29.20 · good Poor