SnorkelForecast.com

Key Largo Snorkel Report Today

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

The skinny

Go in the best window Report Wed 19:56

Key Largo has a usable snorkeling window around Thu 07:00. The main thing to watch is sea temperature.

Score: 7.0/10

Best time: Thu 07:00

Main risk: Sea Temperature

No useful morning window is showing yet.

No useful afternoon window is showing yet.

Email me when it is good

Sunrise

06:45

Sunset

20:11

Water

31.3°C

Max air

29.2°C

Sky

Clear

26% cloud

Good window is available today

Next safe window: Thu 11:00–12:00 (21% 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: Sea temperature

Best available hours

Next safe window starts at Thu 11:00 until 12:00.

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (28 hours)
  • Darkness (15 hours)
  • Wind (13 hours)

Jellyfish drift risk

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

Low · 29/100

Low peak drift risk around Thu 04:00.

warm water supports seasonal jellyfish activity; 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

Next early morning high tide: Thu 10:00

Thu 01:00, Thu 10:00, Fri 02:00

Nearby alternatives in USA

Bahia Honda

97 km away

✅ Good

Looe Key

114 km away

❌ Poor

Dry Tortugas

250 km away

❌ Poor

Crystal River

475 km away

✅ Good

Advanced forecast data

Viewing historical data

Wed 23:00 – Sat 23:00 (EDT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.07 around Wed 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.

18/24 sampled hours stay at or below 0.36m (range 0.24m to 0.38m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 8.4 to 26.5m/s).

Tides range from -0.45m to -0.07m; 3 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
Wed 23:00 0.24 · good 9.20 · high 31.80 · out of range poor
Thu 00:00 0.24 · good 9.70 · high 31.80 · out of range poor
Thu 01:00 0.24 · good 10.00 · high 31.80 · out of range poor
Thu 02:00 0.26 · good 9.80 · high 31.70 · out of range poor
Thu 03:00 0.26 · good 10.40 · high 31.70 · out of range poor
Thu 04:00 0.28 · good 13.30 · high 31.60 · out of range poor
Thu 05:00 0.28 · good 12.70 · high 31.60 · out of range poor
Thu 06:00 0.30 · good 8.40 · high 31.50 · out of range poor
Thu 07:00 0.30 · good 8.90 · high 31.50 · out of range poor
Thu 08:00 0.30 · good 9.60 · high 31.40 · out of range poor
Thu 09:00 0.30 · good 10.70 · high 31.40 · out of range poor
Thu 10:00 0.30 · good 9.00 · high 31.30 · out of range poor
Thu 11:00 0.32 · good 26.50 · high 31.30 · out of range poor
Thu 12:00 0.32 · good 10.00 · high 31.30 · out of range poor
Thu 13:00 0.34 · good 14.10 · high 31.30 · out of range poor
Thu 14:00 0.34 · good 15.30 · high 31.30 · out of range poor
Thu 15:00 0.36 · good 15.00 · high 31.40 · out of range poor
Thu 16:00 0.36 · good 15.80 · high 31.50 · out of range poor
Thu 17:00 0.38 · high 15.00 · high 31.50 · out of range poor
Thu 18:00 0.38 · high 20.10 · high 31.60 · out of range poor
Thu 19:00 0.38 · high 16.50 · high 31.60 · out of range poor
Thu 20:00 0.38 · high 10.00 · high 31.60 · out of range poor
Thu 21:00 0.38 · high 9.00 · high 31.70 · out of range poor
Thu 22:00 0.38 · high 11.50 · high 31.70 · out of range poor
Thu 23:00 0.40 · high 12.70 · high 31.70 · out of range poor
Fri 00:00 0.40 · high 12.50 · high 31.70 · out of range poor
Fri 01:00 0.42 · high 15.30 · high 31.70 · out of range poor
Fri 02:00 0.42 · high 14.60 · high 31.60 · out of range poor
Fri 03:00 0.44 · high 15.60 · high 31.60 · out of range poor
Fri 04:00 0.44 · high 12.60 · high 31.50 · out of range poor
Fri 05:00 0.46 · high 13.70 · high 31.50 · out of range poor
Fri 06:00 0.46 · high 14.70 · high 31.40 · out of range poor
Fri 07:00 0.48 · high 14.30 · high 31.40 · out of range poor
Fri 08:00 0.48 · high 16.50 · high 31.30 · out of range poor
Fri 09:00 0.50 · high 17.40 · high 31.20 · out of range poor
Fri 10:00 0.52 · high 17.60 · high 31.20 · out of range poor
Fri 11:00 0.54 · high 18.20 · high 31.10 · out of range poor
Fri 12:00 0.56 · high 19.70 · high 31.10 · out of range poor
Fri 13:00 0.56 · high 19.20 · high 31.10 · out of range poor
Fri 14:00 0.56 · high 19.90 · high 31.20 · out of range poor
Fri 15:00 0.56 · high 19.40 · high 31.20 · out of range poor
Fri 16:00 0.54 · high 18.70 · high 31.30 · out of range poor
Fri 17:00 0.52 · high 19.30 · high 31.30 · out of range poor
Fri 18:00 0.50 · high 20.30 · high 31.30 · out of range poor
Fri 19:00 0.48 · high 21.10 · high 31.30 · out of range poor
Fri 20:00 0.48 · high 20.60 · high 31.40 · out of range poor
Fri 21:00 0.46 · high 18.30 · high 31.40 · out of range poor
Fri 22:00 0.44 · high 18.70 · high 31.40 · out of range poor
Fri 23:00 0.44 · high 18.50 · high 31.40 · out of range poor
Sat 00:00 0.42 · high 16.60 · high 31.40 · out of range poor
Sat 01:00 0.44 · high 17.70 · high 31.30 · out of range poor
Sat 02:00 0.44 · high 18.50 · high 31.30 · out of range poor
Sat 03:00 0.46 · high 21.40 · high 31.20 · out of range poor
Sat 04:00 0.46 · high 18.00 · high 31.20 · out of range poor
Sat 05:00 0.46 · high 17.10 · high 31.10 · out of range poor
Sat 06:00 0.46 · high 16.10 · high 31.10 · out of range poor
Sat 07:00 0.46 · high 16.50 · high 31.00 · out of range poor
Sat 08:00 0.46 · high 17.20 · high 31.00 · out of range poor
Sat 09:00 0.46 · high 15.60 · high 30.90 · out of range poor
Sat 10:00 0.46 · high 17.70 · high 30.90 · out of range poor
Sat 11:00 0.48 · high 18.40 · high 30.80 · out of range poor
Sat 12:00 0.48 · high 19.90 · high 30.80 · out of range poor
Sat 13:00 0.50 · high 17.30 · high 31.00 · out of range fair
Sat 14:00 0.50 · high 18.40 · high 31.10 · out of range poor
Sat 15:00 0.48 · high 17.30 · high 31.10 · out of range poor
Sat 16:00 0.48 · high 14.50 · high 31.20 · out of range poor
Sat 17:00 0.48 · high 15.10 · high 31.20 · out of range poor
Sat 18:00 0.48 · high 14.50 · high 31.30 · out of range poor
Sat 19:00 0.48 · high 14.20 · high 31.30 · out of range poor
Sat 20:00 0.48 · high 11.90 · high 31.30 · out of range poor
Sat 21:00 0.48 · high 14.30 · high 31.40 · out of range poor
Sat 22:00 0.46 · high 18.00 · high 31.40 · out of range poor