MARINE REPORT / 72 HOURS

Catalina Island Snorkel Report Today

USA · Updated Sat 13:19 (EDT) · Source: Snapshot

The skinny

Marginal Data updated Sat 13:19 (EDT)

Catalina Island looks marginal today. The least-bad daylight window is around Sat 17:00, but waves is limiting the forecast.

Right now (forecast)

Poor · 3.1/10

Sat 15:00 (EDT)

Later today

Fair · 4.7/10

Sat 17:00 (EDT)

Next three days

Good · 5.7/10

Mon 15:00 (EDT)

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

Score: 4.7/10

Best time: Sat 17:00

Main risk: Waves

No useful morning window is showing yet.

Best afternoon signal: Sat 17:00 (Fair). Peak afternoon wind is about 3.0 m/s.

Email me when it is good

Sunrise

09:59

Sunset

21:17

Water

21.9°C

Max air

29.4°C

Sky

Cloudy

100% cloud

Good model window in the next 72 hours

Next good model window: Mon 13:00–18:00 (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

⚠️ Fair conditions

Main blocker: Waves

Monday

✅ Good conditions

Main blocker: Waves

Best available hours

The next good model window starts at Mon 13:00 and lasts until 18:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (69 hours)
  • Tide/current (53 hours)
  • Darkness (44 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, Mon 19:00, Tue 10:00

Nearby alternatives in USA

La Jolla Cove

122 km away

✅ Good

Crystal River

3429 km away

✅ Good

Dry Tortugas

3572 km away

⚠️ Fair

Looe Key

3711 km away

⚠️ Fair

Advanced forecast data

Viewing historical data

Thu 15:00 – Sun 15:00 (EDT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.62 around Thu 16:00; 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 0.76m to 0.86m).

Wind is at or below 5.4m/s in 23/24 sampled hours (range 0.73 to 5.63m/s).

Tides range from -0.41m to 1.2m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
Good 🌟 Good
Good 🌟 Good
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
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
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
Thu 15:00 0.86 · high 0.73 · good 22.90 · good Good
Thu 16:00 0.84 · high 1.17 · good 22.90 · good Good
Thu 17:00 0.84 · high 2.61 · good 23.00 · good Fair
Thu 18:00 0.82 · high 3.71 · good 23.10 · good Fair
Thu 19:00 0.82 · high 4.61 · good 23.10 · good Fair
Thu 20:00 0.80 · high 4.87 · good 23.10 · good Poor
Thu 21:00 0.80 · high 4.98 · good 23.10 · good Poor
Thu 22:00 0.80 · high 5.63 · high 23.00 · good Poor
Thu 23:00 0.80 · high 5.38 · good 23.00 · good Poor
Fri 00:00 0.80 · high 4.49 · good 22.90 · good Poor
Fri 01:00 0.78 · high 3.47 · good 22.80 · good Poor
Fri 02:00 0.78 · high 3.28 · good 22.80 · good Poor
Fri 03:00 0.78 · high 3.07 · good 22.70 · good Poor
Fri 04:00 0.76 · high 2.51 · good 22.70 · good Poor
Fri 05:00 0.76 · high 2.20 · good 22.70 · good Poor
Fri 06:00 0.76 · high 3.67 · good 22.60 · good Poor
Fri 07:00 0.78 · high 4.61 · good 22.70 · good Poor
Fri 08:00 0.78 · high 5.16 · good 22.70 · good Poor
Fri 09:00 0.78 · high 5.39 · good 22.70 · good Poor
Fri 10:00 0.78 · high 4.74 · good 22.80 · good Fair
Fri 11:00 0.78 · high 4.44 · good 22.80 · good Fair
Fri 12:00 0.78 · high 3.80 · good 22.80 · good Fair
Fri 13:00 0.78 · high 3.36 · good 22.80 · good Fair
Fri 14:00 0.78 · high 3.98 · good 22.90 · good Fair
Fri 15:00 0.78 · high 4.03 · good 22.90 · good Fair
Fri 16:00 0.78 · high 4.33 · good 23.00 · good Fair
Fri 17:00 0.78 · high 4.24 · good 23.00 · good Good
Fri 18:00 0.80 · high 5.04 · good 23.10 · good Fair
Fri 19:00 0.80 · high 6.33 · high 23.10 · good Fair
Fri 20:00 0.82 · high 7.22 · high 23.10 · good Poor
Fri 21:00 0.82 · high 6.71 · high 23.10 · good Poor
Fri 22:00 0.84 · high 6.43 · high 23.10 · good Poor
Fri 23:00 0.84 · high 6.41 · high 23.00 · good Poor
Sat 00:00 0.84 · high 6.15 · high 23.00 · good Poor
Sat 01:00 0.82 · high 5.52 · high 22.90 · good Poor
Sat 02:00 0.82 · high 3.71 · good 22.90 · good Poor
Sat 03:00 0.80 · high 3.77 · good 22.80 · good Poor
Sat 04:00 0.80 · high 4.42 · good 22.80 · good Poor
Sat 05:00 0.78 · high 4.31 · good 22.80 · good Poor
Sat 06:00 0.78 · high 4.08 · good 22.80 · good Poor
Sat 07:00 0.80 · high 3.83 · good 22.80 · good Poor
Sat 08:00 0.80 · high 3.58 · good 22.80 · good Poor
Sat 09:00 0.80 · high 3.53 · good 22.80 · good Poor
Sat 10:00 0.78 · high 3.22 · good 22.90 · good Fair
Sat 11:00 0.78 · high 2.64 · good 22.90 · good Fair
Sat 12:00 0.78 · high 2.40 · good 23.00 · good Fair
Sat 13:00 0.76 · high 1.14 · good 23.10 · good Fair
Sat 14:00 0.76 · high 1.22 · good 23.20 · good Fair
Sat 15:00 0.76 · high 1.50 · good 23.30 · good Fair
Sat 16:00 0.76 · high 2.42 · good 23.40 · good Fair
Sat 17:00 0.76 · high 3.24 · good 23.60 · good Fair
Sat 18:00 0.76 · high 4.04 · good 23.70 · good Fair
Sat 19:00 0.76 · high 4.62 · good 23.80 · good Fair
Sat 20:00 0.76 · high 5.51 · high 23.80 · good Poor
Sat 21:00 0.78 · high 5.43 · high 23.80 · good Poor
Sat 22:00 0.78 · high 4.95 · good 23.70 · good Poor
Sat 23:00 0.80 · high 4.62 · good 23.50 · good Poor
Sun 00:00 0.80 · high 3.31 · good 23.30 · good Poor
Sun 01:00 0.80 · high 3.93 · good 23.20 · good Poor
Sun 02:00 0.80 · high 3.24 · good 23.10 · good Poor
Sun 03:00 0.80 · high 2.92 · good 23.00 · good Poor
Sun 04:00 0.82 · high 3.94 · good 23.00 · good Poor
Sun 05:00 0.82 · high 4.03 · good 23.00 · good Poor
Sun 06:00 0.82 · high 3.80 · good 22.90 · good Poor
Sun 07:00 0.76 · high 3.61 · good 22.40 · good Poor
Sun 08:00 0.76 · high 2.72 · good 22.40 · good Poor
Sun 09:00 0.76 · high 1.25 · good 22.50 · good Poor
Sun 10:00 0.78 · high 1.02 · good 22.50 · good Fair
Sun 11:00 0.78 · high 1.14 · good 22.60 · good Fair
Sun 12:00 0.78 · high 1.36 · good 22.70 · good Fair
Sun 13:00 0.80 · high 2.12 · good 22.80 · good Fair
Sun 14:00 0.76 · high 2.24 · good 22.90 · good Fair