MARINE REPORT / 72 HOURS

Catalina Island Snorkel Report Today

USA · Updated Sat 02:41 (EDT) · Source: Snapshot

The skinny

Marginal Data updated Sat 02:41 (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 04:00 (EDT)

Later today

Fair · 5.2/10

Sat 19:00 (EDT)

Next three days

Good · 6.3/10

Sun 17:00 (EDT)

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

Score: 5.2/10

Best time: Sat 19:00

Main risk: Waves

Best morning signal: Sat 10:00 (Fair).

Best afternoon signal: Sat 19:00 (Fair). Peak afternoon wind is about 5.5 m/s.

Email me when it is good

Sunrise

09:59

Sunset

21:17

Water

21.5°C

Max air

29.0°C

Sky

Cloudy

71% 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

Fri 04:00 – Mon 04:00 (EDT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.51 around Fri 12:00; 8 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 1.14m to 1.2m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.72 to 4.8m/s).

Tides range from -0.36m to 1.24m; 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
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
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
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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
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
Fri 04:00 1.16 · high 0.72 · good 23.60 · good Poor
Fri 05:00 1.16 · high 0.98 · good 23.60 · good Poor
Fri 06:00 1.16 · high 1.20 · good 23.50 · good Poor
Fri 07:00 1.16 · high 2.12 · good 23.60 · good Poor
Fri 08:00 1.16 · high 1.96 · good 23.60 · good Poor
Fri 09:00 1.16 · high 1.65 · good 23.60 · good Poor
Fri 10:00 1.16 · high 1.40 · good 23.60 · good Fair
Fri 11:00 1.16 · high 1.46 · good 23.60 · good Fair
Fri 12:00 1.16 · high 1.26 · good 23.60 · good Fair
Fri 13:00 1.16 · high 1.26 · good 23.60 · good Fair
Fri 14:00 1.16 · high 1.58 · good 23.60 · good Fair
Fri 15:00 1.16 · high 1.70 · good 23.70 · good Fair
Fri 16:00 1.14 · high 2.35 · good 23.70 · good Fair
Fri 17:00 1.14 · high 3.31 · good 23.80 · good Poor
Fri 18:00 1.14 · high 3.60 · good 23.80 · good Poor
Fri 19:00 1.16 · high 3.72 · good 23.80 · good Fair
Fri 20:00 1.16 · high 4.51 · good 23.80 · good Poor
Fri 21:00 1.18 · high 4.80 · good 23.80 · good Poor
Fri 22:00 1.18 · high 4.40 · good 23.70 · good Poor
Fri 23:00 1.20 · high 4.21 · good 23.60 · good Poor
Sat 00:00 1.20 · high 3.42 · good 23.50 · good Poor
Sat 01:00 1.18 · high 2.82 · good 23.40 · good Poor
Sat 02:00 1.18 · high 2.53 · good 23.40 · good Poor
Sat 03:00 1.18 · high 2.01 · good 23.30 · good Poor
Sat 04:00 1.16 · high 1.72 · good 23.30 · good Poor
Sat 05:00 1.16 · high 1.61 · good 23.20 · good Poor
Sat 06:00 1.16 · high 1.73 · good 23.20 · good Poor
Sat 07:00 1.14 · high 0.36 · good 23.30 · good Poor
Sat 08:00 1.14 · high 1.24 · good 23.30 · good Poor
Sat 09:00 1.14 · high 1.84 · good 23.30 · good Poor
Sat 10:00 1.14 · high 2.76 · good 23.20 · good Fair
Sat 11:00 1.14 · high 2.26 · good 23.20 · good Fair
Sat 12:00 1.14 · high 2.51 · good 23.20 · good Fair
Sat 13:00 1.14 · high 2.33 · good 23.30 · good Fair
Sat 14:00 1.14 · high 2.16 · good 23.30 · good Fair
Sat 15:00 1.14 · high 1.73 · good 23.30 · good Fair
Sat 16:00 1.14 · high 2.00 · good 23.40 · good Fair
Sat 17:00 1.14 · high 2.91 · good 23.40 · good Fair
Sat 18:00 1.14 · high 4.75 · good 23.50 · good Poor
Sat 19:00 1.12 · high 6.14 · high 23.50 · good Poor
Sat 20:00 1.12 · high 6.48 · high 23.50 · good Poor
Sat 21:00 1.12 · high 9.12 · high 23.50 · good Poor
Sat 22:00 1.10 · high 10.15 · high 23.50 · good Poor
Sat 23:00 1.10 · high 10.11 · high 23.40 · good Poor
Sun 00:00 1.10 · high 8.56 · high 23.40 · good Poor
Sun 01:00 1.10 · high 6.55 · high 23.30 · good Poor
Sun 02:00 1.10 · high 6.20 · high 23.30 · good Poor
Sun 03:00 1.10 · high 7.83 · high 23.20 · good Poor
Sun 04:00 1.12 · high 7.54 · high 23.20 · good Poor
Sun 05:00 1.12 · high 8.05 · high 23.20 · good Poor
Sun 06:00 1.14 · high 7.83 · high 23.10 · good Poor
Sun 07:00 1.06 · high 1.53 · good 22.40 · good Poor
Sun 08:00 1.08 · high 4.27 · good 22.30 · good Poor
Sun 09:00 1.18 · high 9.04 · high 22.30 · good Poor
Sun 10:00 1.26 · high 12.04 · high 22.30 · good Poor
Sun 11:00 1.36 · high 14.82 · high 22.20 · good Poor
Sun 12:00 1.52 · high 12.01 · high 22.20 · good Poor
Sun 13:00 1.60 · high 10.76 · high 22.20 · good Poor
Sun 14:00 1.70 · high 11.87 · high 22.10 · good Poor
Sun 15:00 1.82 · high 11.25 · high 22.10 · good Poor
Sun 16:00 1.92 · high 9.85 · high 22.00 · good Poor
Sun 17:00 2.04 · high 8.27 · high 22.00 · good Fair
Sun 18:00 2.12 · high 7.15 · high 22.00 · good Fair
Sun 19:00 2.20 · high 6.72 · high 21.90 · good Poor
Sun 20:00 2.28 · high 5.86 · high 21.90 · good Poor
Sun 21:00 2.26 · high 5.44 · high 21.80 · good Poor
Sun 22:00 2.24 · high 5.22 · good 21.80 · good Poor
Sun 23:00 2.22 · high 5.11 · good 21.80 · good Poor
Mon 00:00 2.14 · high 5.04 · good 21.80 · good Poor
Mon 01:00 2.06 · high 4.69 · good 21.70 · good Poor
Mon 02:00 1.98 · high 4.75 · good 21.70 · good Poor
Mon 03:00 1.90 · high 4.90 · good 21.70 · good Poor