SnorkelForecast.com

Catalina Island Snorkel Report Today

USA · Updated Tue 04:14 (EDT) · Source: Snapshot · Showing fallback/stale data

The skinny

Go in the best window Report Wed 19:39

Catalina Island has a usable snorkeling window around Thu 09:00. The main thing to watch is waves.

Score: 6.2/10

Best time: Thu 09:00

Main risk: Waves

No useful morning window is showing yet.

No useful afternoon window is showing yet.

Email me when it is good

Sunrise

09:00

Sunset

22:59

Water

21.3°C

Max air

18.9°C

Sky

Clear

0% cloud

Good window is available today

Next safe window: Thu 13:00–15:00 (11% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Wednesday

❌ poor conditions

Main blocker: Waves

Thursday

✅ good conditions

Main blocker: Waves

Best available hours

Next safe window starts at Thu 13:00 until 15:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (28 hours)
  • Darkness (17 hours)
  • Wind (12 hours)

Jellyfish drift risk

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

Low · 23/100

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

Thu 00:00, Thu 14:00

Nearby alternatives in USA

La Jolla Cove

122 km away

❌ Poor

Crystal River

3429 km away

✅ Good

Dry Tortugas

3572 km away

❌ Poor

Looe Key

3711 km away

❌ Poor

Advanced forecast data

Viewing historical data

Thu 23:00 – Sun 23:00 (EDT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.0 around Thu 19:00; 0 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 0.78m to 0.88m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 5.7 to 21.0m/s).

Tides range from -0.64m to 1.02m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
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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 and safety gate (outside daylight scores lower).
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Thu 23:00 0.88 · high 20.90 · high 20.70 · good poor
Fri 00:00 0.88 · high 20.50 · high 20.70 · good poor
Fri 01:00 0.88 · high 21.00 · high 20.70 · good poor
Fri 02:00 0.88 · high 19.10 · high 20.60 · good poor
Fri 03:00 0.88 · high 17.70 · high 20.50 · out of range poor
Fri 04:00 0.86 · high 14.60 · high 20.50 · out of range poor
Fri 05:00 0.86 · high 12.30 · high 20.40 · out of range poor
Fri 06:00 0.84 · high 11.30 · high 20.30 · out of range poor
Fri 07:00 0.84 · high 12.10 · high 20.30 · out of range poor
Fri 08:00 0.82 · high 10.30 · high 20.20 · out of range poor
Fri 09:00 0.82 · high 6.70 · high 20.20 · out of range poor
Fri 10:00 0.80 · high 6.70 · high 20.20 · out of range poor
Fri 11:00 0.80 · high 7.80 · high 20.10 · out of range poor
Fri 12:00 0.78 · high 10.50 · high 20.10 · out of range poor
Fri 13:00 0.78 · high 12.40 · high 20.10 · out of range poor
Fri 14:00 0.78 · high 12.20 · high 20.20 · out of range poor
Fri 15:00 0.78 · high 12.10 · high 20.20 · out of range poor
Fri 16:00 0.78 · high 11.60 · high 20.20 · out of range poor
Fri 17:00 0.78 · high 10.90 · high 20.30 · out of range poor
Fri 18:00 0.78 · high 12.10 · high 20.30 · out of range poor
Fri 19:00 0.78 · high 6.20 · high 20.40 · out of range poor
Fri 20:00 0.80 · high 5.70 · high 20.50 · out of range poor
Fri 21:00 0.80 · high 9.40 · high 20.60 · good poor
Fri 22:00 0.84 · high 12.60 · high 20.70 · good poor
Fri 23:00 0.86 · high 16.20 · high 20.80 · good poor
Sat 00:00 0.90 · high 17.60 · high 20.80 · good poor
Sat 01:00 0.94 · high 19.40 · high 20.80 · good poor
Sat 02:00 0.98 · high 21.70 · high 20.70 · good poor
Sat 03:00 1.02 · high 21.30 · high 20.70 · good poor
Sat 04:00 1.06 · high 20.20 · high 20.60 · good poor
Sat 05:00 1.12 · high 21.30 · high 20.50 · out of range poor
Sat 06:00 1.16 · high 20.90 · high 20.40 · out of range poor
Sat 07:00 1.22 · high 20.80 · high 20.40 · out of range poor
Sat 08:00 1.30 · high 19.30 · high 20.30 · out of range poor
Sat 09:00 1.36 · high 17.60 · high 20.30 · out of range poor
Sat 10:00 1.38 · high 14.50 · high 20.30 · out of range poor
Sat 11:00 1.38 · high 11.70 · high 20.30 · out of range poor
Sat 12:00 1.40 · high 10.20 · high 20.30 · out of range poor
Sat 13:00 1.02 · high 7.10 · high 20.10 · out of range poor
Sat 14:00 1.04 · high 7.60 · high 20.10 · out of range poor
Sat 15:00 1.04 · high 5.40 · good 20.10 · out of range poor
Sat 16:00 1.04 · high 2.90 · good 20.10 · out of range poor
Sat 17:00 1.02 · high 2.90 · good 20.10 · out of range poor
Sat 18:00 1.02 · high 3.40 · good 20.10 · out of range poor
Sat 19:00 1.02 · high 6.90 · high 20.20 · out of range poor
Sat 20:00 1.04 · high 10.30 · high 20.20 · out of range poor
Sat 21:00 1.04 · high 18.40 · high 20.30 · out of range poor
Sat 22:00 1.08 · high 24.20 · high 20.30 · out of range poor
Sat 23:00 1.12 · high 29.00 · high 20.40 · out of range poor
Sun 00:00 1.16 · high 30.10 · high 20.40 · out of range poor
Sun 01:00 1.18 · high 29.80 · high 20.40 · out of range poor
Sun 02:00 1.20 · high 30.70 · high 20.30 · out of range poor
Sun 03:00 1.22 · high 31.10 · high 20.20 · out of range poor
Sun 04:00 1.26 · high 30.10 · high 20.20 · out of range poor
Sun 05:00 1.28 · high 27.10 · high 20.10 · out of range poor
Sun 06:00 1.32 · high 27.20 · high 20.00 · out of range poor
Sun 07:00 1.34 · high 26.30 · high 20.00 · out of range poor
Sun 08:00 1.38 · high 24.50 · high 19.90 · out of range poor
Sun 09:00 1.40 · high 22.70 · high 19.80 · out of range poor
Sun 10:00 1.42 · high 20.60 · high 19.80 · out of range poor
Sun 11:00 1.42 · high 17.80 · high 19.70 · out of range poor
Sun 12:00 1.44 · high 17.50 · high 19.70 · out of range poor
Sun 13:00 1.44 · high 14.50 · high 19.70 · out of range poor
Sun 14:00 1.42 · high 12.00 · high 19.70 · out of range poor
Sun 15:00 1.42 · high 10.50 · high 19.70 · out of range poor
Sun 16:00 1.40 · high 10.20 · high 19.70 · out of range poor
Sun 17:00 1.38 · high 1.10 · good 19.70 · out of range poor
Sun 18:00 1.36 · high 1.50 · good 19.80 · out of range poor
Sun 19:00 1.34 · high 4.90 · good 19.80 · out of range poor
Sun 20:00 1.30 · high 8.90 · high 19.90 · out of range poor
Sun 21:00 1.28 · high 9.90 · high 20.10 · out of range poor
Sun 22:00 1.28 · high 14.00 · high 20.20 · out of range poor