MARINE REPORT / 72 HOURS

Catalina Island Snorkel Report Today

USA · Updated Sat 06:08 (EDT) · Source: Snapshot

The skinny

Marginal Data updated Sat 06:08 (EDT)

Catalina Island looks marginal today. The least-bad daylight window is around Sat 19:00, but waves is limiting the forecast.

Right now (forecast)

Poor · 0.0/10

Sat 08:00 (EDT)

Later today

Fair · 5.3/10

Sat 19:00 (EDT)

Next three days

Good · 6.2/10

Sun 17:00 (EDT)

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

Score: 5.3/10

Best time: Sat 19:00

Main risk: Waves

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

Best afternoon signal: Sat 19:00 (Fair). Peak afternoon wind is about 5.9 m/s.

Email me when it is good

Sunrise

09:59

Sunset

21:17

Water

21.5°C

Max air

29.3°C

Sky

Partly cloudy

48% cloud

Good model window in the next 72 hours

Next good model window: Sun 15:00–19:00 (9% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Saturday

⚠️ Fair conditions

Main blocker: Waves

Sunday

✅ Good conditions

Main blocker: Waves

Monday

✅ Good conditions

Main blocker: Waves

Best available hours

The next good model window starts at Sun 15:00 and lasts until 19:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (69 hours)
  • Tide/current (53 hours)
  • Darkness (40 hours)

Jellyfish drift risk

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

Low · 26/100

Low drift risk now.

water is warm enough for occasional jellyfish; 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

Sat 16:00, Sun 18:00

Nearby alternatives in USA

La Jolla Cove

122 km away

✅ Good

Crystal River

3429 km away

✅ Good

Dry Tortugas

3572 km away

✅ Good

Looe Key

3711 km away

✅ Good

Advanced forecast data

Viewing historical data

Mon 08:00 – Thu 08:00 (EDT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.49 around Mon 14:00; 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 0.82m to 0.98m).

Wind is at or below 5.4m/s in 23/24 sampled hours (range 1.44 to 5.7m/s).

Tides range from -0.53m to 1.12m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
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
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 08:00 0.82 · high 3.97 · good 22.90 · good Poor
Mon 09:00 0.82 · high 3.91 · good 22.90 · good Poor
Mon 10:00 0.82 · high 3.47 · good 22.90 · good Fair
Mon 11:00 0.82 · high 3.04 · good 22.90 · good Fair
Mon 12:00 0.82 · high 2.98 · good 22.90 · good Fair
Mon 13:00 0.82 · high 3.39 · good 23.00 · good Fair
Mon 14:00 0.84 · high 2.19 · good 23.10 · good Fair
Mon 15:00 0.84 · high 2.91 · good 23.20 · good Fair
Mon 16:00 0.84 · high 3.23 · good 23.40 · good Fair
Mon 17:00 0.84 · high 3.86 · good 23.50 · good Fair
Mon 18:00 0.84 · high 4.21 · good 23.70 · good Fair
Mon 19:00 0.86 · high 4.27 · good 23.80 · good Fair
Mon 20:00 0.86 · high 4.74 · good 23.90 · good Poor
Mon 21:00 0.90 · high 4.87 · good 23.80 · good Poor
Mon 22:00 0.92 · high 5.70 · high 23.70 · good Poor
Mon 23:00 0.96 · high 5.25 · good 23.60 · good Poor
Tue 00:00 0.96 · high 3.52 · good 23.40 · good Poor
Tue 01:00 0.98 · high 4.91 · good 23.30 · good Poor
Tue 02:00 0.98 · high 4.11 · good 23.20 · good Poor
Tue 03:00 0.98 · high 2.83 · good 23.10 · good Poor
Tue 04:00 0.98 · high 1.44 · good 23.10 · good Poor
Tue 05:00 0.98 · high 1.50 · good 23.00 · good Poor
Tue 06:00 0.98 · high 2.10 · good 23.00 · good Poor
Tue 07:00 0.94 · high 1.92 · good 22.90 · good Poor
Tue 08:00 0.94 · high 2.28 · good 22.90 · good Poor
Tue 09:00 0.94 · high 2.09 · good 22.90 · good Poor
Tue 10:00 0.96 · high 1.90 · good 22.90 · good Fair
Tue 11:00 0.96 · high 1.79 · good 22.90 · good Fair
Tue 12:00 0.96 · high 1.39 · good 23.00 · good Fair
Tue 13:00 0.96 · high 0.85 · good 23.00 · good Fair
Tue 14:00 0.94 · high 0.57 · good 23.10 · good Fair
Tue 15:00 0.94 · high 0.51 · good 23.20 · good Fair
Tue 16:00 0.92 · high 1.87 · good 23.40 · good Fair
Tue 17:00 0.92 · high 3.38 · good 23.50 · good Fair
Tue 18:00 0.94 · high 4.20 · good 23.70 · good Fair
Tue 19:00 0.94 · high 3.06 · good 23.80 · good Fair
Tue 20:00 0.96 · high 4.90 · good 23.90 · good Poor
Tue 21:00 0.96 · high 4.68 · good 23.90 · good Poor
Tue 22:00 0.98 · high 4.98 · good 23.80 · good Poor
Tue 23:00 0.98 · high 4.62 · good 23.70 · good Poor
Wed 00:00 0.98 · high 4.21 · good 23.60 · good Poor
Wed 01:00 0.98 · high 3.31 · good 23.50 · good Poor
Wed 02:00 0.98 · high 2.55 · good 23.40 · good Poor
Wed 03:00 0.98 · high 2.14 · good 23.40 · good Poor
Wed 04:00 0.96 · high 2.13 · good 23.30 · good Poor
Wed 05:00 0.96 · high 1.48 · good 23.30 · good Poor
Wed 06:00 0.96 · high 0.85 · good 23.30 · good Poor
Wed 07:00 0.90 · high 1.93 · good 23.20 · good Poor
Wed 08:00 0.90 · high 1.87 · good 23.20 · good Poor
Wed 09:00 0.90 · high 2.02 · good 23.20 · good Poor
Wed 10:00 0.90 · high 1.70 · good 23.20 · good Fair
Wed 11:00 0.90 · high 1.40 · good 23.30 · good Fair
Wed 12:00 1.02 · high 1.75 · good 23.30 · good Fair
Wed 13:00 1.00 · high 1.87 · good 23.40 · good Fair
Wed 14:00 1.00 · high 1.80 · good 23.40 · good Fair
Wed 15:00 1.00 · high 2.10 · good 23.50 · good Fair
Wed 16:00 0.98 · high 2.47 · good 23.60 · good Fair
Wed 17:00 0.98 · high 3.34 · good 23.70 · good Fair
Wed 18:00 0.98 · high 4.26 · good 23.80 · good Fair
Wed 19:00 1.00 · high 4.85 · good 23.80 · good Fair
Wed 20:00 1.00 · high 4.60 · good 23.90 · good Poor
Wed 21:00 1.00 · high 4.33 · good 23.90 · good Poor
Wed 22:00 1.00 · high 3.50 · good 23.80 · good Poor
Wed 23:00 1.00 · high 2.72 · good 23.70 · good Poor
Thu 00:00 1.00 · high 1.92 · good 23.70 · good Poor
Thu 01:00 1.02 · high 1.84 · good 23.60 · good Poor
Thu 02:00 1.02 · high 1.77 · good 23.50 · good Poor
Thu 03:00 1.02 · high 1.63 · good 23.50 · good Poor
Thu 04:00 1.04 · high 1.61 · good 23.40 · good Poor
Thu 05:00 1.04 · high 1.84 · good 23.40 · good Poor
Thu 06:00 1.04 · high 2.26 · good 23.40 · good Poor
Thu 07:00 1.06 · high 2.32 · good 23.40 · good Poor