MARINE REPORT / 72 HOURS

Catalina Island Snorkel Report Today

USA · Updated Sun 01:47 (EDT) · Source: Snapshot

The skinny

Go in the best window Data updated Sun 01:47 (EDT)

Catalina Island has a usable snorkeling window around Sun 15:00. The main thing to watch is waves.

Right now (forecast)

Poor · 0.0/10

Sun 04:00 (EDT)

Later today

Good · 5.7/10

Sun 17:00 (EDT)

Next three days

Good · 5.8/10

Mon 19:00 (EDT)

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

Score: 5.7/10

Best time: Sun 15:00

Main risk: Waves

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

Best afternoon signal: Sun 17:00 (Good). Peak afternoon wind is about 4.4 m/s.

Email me when it is good

Sunrise

10:00

Sunset

21:16

Water

21.7°C

Max air

26.9°C

Sky

Clear

0% cloud

Good model window in the next 72 hours

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

3-day planner Best available Show data

3-day planner

Sunday

✅ Good conditions

Main blocker: Waves

Monday

✅ Good conditions

Main blocker: Waves

Tuesday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

The next good model window starts at Sun 15:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (68 hours)
  • Tide/current (56 hours)
  • Darkness (40 hours)

Jellyfish drift risk

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

Low · 26/100

Low peak drift risk around Sun 11:00.

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

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

❌ Poor

Looe Key

3711 km away

❌ Poor

Advanced forecast data

Viewing historical data

Sat 04:00 – Tue 04:00 (EDT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.5 around Sat 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 0.84m to 1.04m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 1.49 to 4.14m/s).

Tides range from -0.35m to 0.8m; 1 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
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
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
Sat 04:00 1.00 · high 3.20 · good 21.90 · good Poor
Sat 05:00 1.00 · high 2.98 · good 21.90 · good Poor
Sat 06:00 1.00 · high 2.60 · good 21.90 · good Poor
Sat 07:00 1.02 · high 2.64 · good 21.80 · good Poor
Sat 08:00 1.04 · high 1.78 · good 21.90 · good Poor
Sat 09:00 1.02 · high 1.62 · good 21.90 · good Poor
Sat 10:00 1.00 · high 1.51 · good 22.00 · good Fair
Sat 11:00 0.98 · high 1.65 · good 22.00 · good Fair
Sat 12:00 0.96 · high 1.55 · good 22.10 · good Fair
Sat 13:00 0.94 · high 1.77 · good 22.10 · good Fair
Sat 14:00 0.90 · high 1.98 · good 22.20 · good Fair
Sat 15:00 0.88 · high 1.77 · good 22.30 · good Fair
Sat 16:00 0.88 · high 1.49 · good 22.50 · good Fair
Sat 17:00 0.86 · high 1.75 · good 22.60 · good Fair
Sat 18:00 0.86 · high 2.55 · good 22.70 · good Fair
Sat 19:00 0.84 · high 3.50 · good 22.80 · good Fair
Sat 20:00 0.84 · high 4.13 · good 22.90 · good Poor
Sat 21:00 0.84 · high 4.14 · good 22.90 · good Poor
Sat 22:00 0.86 · high 3.82 · good 22.80 · good Poor
Sat 23:00 0.86 · high 3.31 · good 22.70 · good Poor
Sun 00:00 0.88 · high 3.10 · good 22.60 · good Poor
Sun 01:00 0.88 · high 3.11 · good 22.50 · good Poor
Sun 02:00 0.90 · high 3.41 · good 22.40 · good Poor
Sun 03:00 0.92 · high 2.70 · good 22.40 · good Poor
Sun 04:00 0.92 · high 2.31 · good 22.30 · good Poor
Sun 05:00 0.94 · high 3.05 · good 22.30 · good Poor
Sun 06:00 0.94 · high 2.69 · good 22.30 · good Poor
Sun 07:00 0.94 · high 2.38 · good 22.70 · good Poor
Sun 08:00 0.96 · high 2.06 · good 22.70 · good Poor
Sun 09:00 0.96 · high 2.26 · good 22.70 · good Poor
Sun 10:00 0.94 · high 1.44 · good 22.60 · good Fair
Sun 11:00 0.94 · high 2.55 · good 22.60 · good Fair
Sun 12:00 0.92 · high 2.69 · good 22.60 · good Fair
Sun 13:00 0.92 · high 2.08 · good 22.60 · good Fair
Sun 14:00 0.90 · high 3.26 · good 22.70 · good Fair
Sun 15:00 0.88 · high 2.51 · good 22.70 · good Fair
Sun 16:00 0.88 · high 3.61 · good 22.80 · good Fair
Sun 17:00 0.86 · high 5.48 · high 22.90 · good Fair
Sun 18:00 0.86 · high 5.73 · high 23.00 · good Fair
Sun 19:00 0.84 · high 5.91 · high 23.10 · good Fair
Sun 20:00 0.84 · high 6.10 · high 23.10 · good Poor
Sun 21:00 0.84 · high 5.71 · high 23.10 · good Poor
Sun 22:00 0.84 · high 5.66 · high 23.10 · good Poor
Sun 23:00 0.84 · high 5.01 · good 23.00 · good Poor
Mon 00:00 0.82 · high 4.10 · good 22.90 · good Poor
Mon 01:00 0.82 · high 3.10 · good 22.90 · good Poor
Mon 02:00 0.80 · high 3.20 · good 22.80 · good Poor
Mon 03:00 0.80 · high 3.41 · good 22.80 · good Poor
Mon 04:00 0.80 · high 2.82 · good 22.70 · good Poor
Mon 05:00 0.80 · high 2.56 · good 22.70 · good Poor
Mon 06:00 0.80 · high 2.19 · good 22.70 · good Poor
Mon 07:00 0.82 · high 2.01 · good 22.50 · good Poor
Mon 08:00 0.82 · high 2.30 · good 22.50 · good Poor
Mon 09:00 0.82 · high 1.77 · good 22.50 · good Poor
Mon 10:00 0.84 · high 1.75 · good 22.50 · good Fair
Mon 11:00 0.84 · high 1.92 · good 22.50 · good Fair
Mon 12:00 0.84 · high 2.20 · good 22.50 · good Fair
Mon 13:00 0.84 · high 2.70 · good 22.50 · good Fair
Mon 14:00 0.86 · high 3.03 · good 22.50 · good Fair
Mon 15:00 0.86 · high 2.77 · good 22.50 · good Fair
Mon 16:00 0.86 · high 2.84 · good 22.50 · good Fair
Mon 17:00 0.86 · high 3.11 · good 22.60 · good Fair
Mon 18:00 0.88 · high 3.62 · good 22.60 · good Fair
Mon 19:00 0.88 · high 4.30 · good 22.70 · good Fair
Mon 20:00 0.90 · high 4.20 · good 22.70 · good Poor
Mon 21:00 0.92 · high 3.50 · good 22.70 · good Poor
Mon 22:00 0.94 · high 3.98 · good 22.70 · good Poor
Mon 23:00 0.96 · high 2.28 · good 22.60 · good Poor
Tue 00:00 0.96 · high 2.15 · good 22.60 · good Poor
Tue 01:00 0.94 · high 1.98 · good 22.60 · good Poor
Tue 02:00 0.94 · high 2.11 · good 22.50 · good Poor
Tue 03:00 0.96 · high 1.64 · good 22.50 · good Poor