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 01:00 (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

21.8°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 (14% 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 (71 hours)
  • Tide/current (58 hours)
  • Darkness (43 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

Tue 01:00 – Fri 01:00 (EDT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.54 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 0.88m to 1.0m).

Wind is at or below 5.4m/s in 22/24 sampled hours (range 0.9 to 5.92m/s).

Tides range from -0.48m to 1.06m; 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
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
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
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Good 🌟 Good
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
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
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
Tue 04:00 0.96 · high 1.48 · good 22.40 · good Poor
Tue 05:00 0.98 · high 1.58 · good 22.40 · good Poor
Tue 06:00 0.98 · high 1.70 · good 22.30 · good Poor
Tue 07:00 1.00 · high 0.90 · good 22.30 · good Poor
Tue 08:00 0.98 · high 1.39 · good 22.30 · good Poor
Tue 09:00 0.98 · high 1.30 · good 22.30 · good Poor
Tue 10:00 0.96 · high 1.30 · good 22.30 · good Fair
Tue 11:00 0.96 · high 1.77 · good 22.30 · good Fair
Tue 12:00 0.94 · high 2.00 · good 22.30 · good Fair
Tue 13:00 0.94 · high 2.25 · good 22.30 · good Fair
Tue 14:00 0.92 · high 2.47 · good 22.30 · good Fair
Tue 15:00 0.90 · high 2.75 · good 22.40 · good Fair
Tue 16:00 0.90 · high 3.09 · good 22.40 · good Fair
Tue 17:00 0.88 · high 3.32 · good 22.50 · good Fair
Tue 18:00 0.90 · high 3.45 · good 22.60 · good Fair
Tue 19:00 0.92 · high 3.95 · good 22.60 · good Fair
Tue 20:00 0.94 · high 4.81 · good 22.60 · good Poor
Tue 21:00 0.96 · high 5.92 · high 22.60 · good Poor
Tue 22:00 0.96 · high 5.69 · high 22.60 · good Poor
Tue 23:00 0.98 · high 4.71 · good 22.50 · good Poor
Wed 00:00 0.96 · high 3.93 · good 22.50 · good Poor
Wed 01:00 0.94 · high 2.71 · good 22.40 · good Poor
Wed 02:00 0.92 · high 2.50 · good 22.40 · good Poor
Wed 03:00 0.92 · high 2.42 · good 22.30 · good Poor
Wed 04:00 0.92 · high 2.31 · good 22.30 · good Poor
Wed 05:00 0.92 · high 1.84 · good 22.20 · good Poor
Wed 06:00 0.94 · high 1.63 · good 22.20 · good Poor
Wed 07:00 0.96 · high 1.84 · good 22.20 · good Poor
Wed 08:00 0.98 · high 1.42 · good 22.20 · good Poor
Wed 09:00 0.98 · high 1.14 · good 22.20 · good Poor
Wed 10:00 0.98 · high 1.12 · good 22.20 · good Fair
Wed 11:00 0.98 · high 1.33 · good 22.30 · good Fair
Wed 12:00 0.98 · high 1.41 · good 22.30 · good Fair
Wed 13:00 0.98 · high 1.22 · good 22.40 · good Fair
Wed 14:00 0.98 · high 1.34 · good 22.40 · good Fair
Wed 15:00 0.98 · high 1.57 · good 22.50 · good Fair
Wed 16:00 0.96 · high 1.84 · good 22.60 · good Fair
Wed 17:00 0.96 · high 2.38 · good 22.70 · good Fair
Wed 18:00 0.94 · high 2.15 · good 22.80 · good Good
Wed 19:00 0.94 · high 1.84 · good 22.90 · good Good
Wed 20:00 0.92 · high 1.63 · good 22.90 · good Poor
Wed 21:00 0.92 · high 1.39 · good 22.90 · good Poor
Wed 22:00 0.90 · high 1.36 · good 22.90 · good Poor
Wed 23:00 0.90 · high 1.65 · good 22.80 · good Poor
Thu 00:00 0.90 · high 2.06 · good 22.70 · good Poor
Thu 01:00 0.88 · high 2.82 · good 22.70 · good Poor
Thu 02:00 0.88 · high 2.63 · good 22.60 · good Poor
Thu 03:00 0.88 · high 2.24 · good 22.60 · good Poor
Thu 04:00 0.86 · high 1.80 · good 22.50 · good Poor
Thu 05:00 0.86 · high 1.58 · good 22.50 · good Poor
Thu 06:00 0.86 · high 1.84 · good 22.50 · good Poor
Thu 07:00 0.84 · high 1.32 · good 22.40 · good Poor
Thu 08:00 0.84 · high 1.40 · good 22.60 · good Poor
Thu 09:00 0.84 · high 1.61 · good 22.60 · good Poor
Thu 10:00 0.84 · high 1.64 · good 22.70 · good Fair
Thu 11:00 0.84 · high 0.92 · good 22.70 · good Fair
Thu 12:00 0.86 · high 0.41 · good 22.70 · good Fair
Thu 13:00 0.86 · high 0.58 · good 22.80 · good Fair
Thu 14:00 0.86 · high 1.30 · good 22.80 · good Fair
Thu 15:00 0.86 · high 1.43 · good 22.90 · good Good
Thu 16:00 0.86 · high 2.02 · good 23.00 · good Fair
Thu 17:00 0.86 · high 3.07 · good 23.10 · good Fair
Thu 18:00 0.86 · high 3.96 · good 23.20 · good Fair
Thu 19:00 0.86 · high 4.34 · good 23.30 · good Fair
Thu 20:00 0.86 · high 3.32 · good 23.30 · good Poor
Thu 21:00 0.86 · high 3.01 · good 23.30 · good Poor
Thu 22:00 0.84 · high 1.90 · good 23.30 · good Poor
Thu 23:00 0.84 · high 1.35 · good 23.20 · good Poor
Fri 00:00 0.84 · high 1.53 · good 23.10 · good Poor