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 17:07

Key Largo has a usable snorkeling window around Wed 18:00. The main thing to watch is sea temperature.

Score: 7.0/10

Best time: Wed 18:00

Main risk: Sea Temperature

No useful morning window is showing yet.

Best afternoon signal: Wed 18:00 (Good). Peak afternoon wind is about 4.4 m/s.

Email me when it is good

Sunrise

06:44

Sunset

20:11

Water

31.3°C

Max air

30.6°C

Sky

Clear

10% cloud

Good window is available today

Next safe window: Wed 22:00–23:00 (27% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Wednesday

✅ good conditions

Main blocker: Waves

Thursday

✅ good conditions

Main blocker: Sea temperature

Best available hours

Next safe window starts at Wed 22:00 until 23:00.

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (30 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

⚠️ Fair

Dry Tortugas

250 km away

⚠️ Fair

Crystal River

475 km away

✅ Good

Advanced forecast data

Viewing historical data

Sat 21:00 – Tue 21:00 (EDT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.48 around Sun 14:00; 9 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 0.4m to 0.48m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 8.0 to 25.1m/s).

Tides range from -0.46m to -0.07m; 3 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
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
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
fair ⚠️ Fair
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
fair ⚠️ Fair
excellent ✅ Excellent
good 🌟 Good
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
good 🌟 Good
good 🌟 Good
good 🌟 Good
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
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
Sat 23:00 0.44 · high 14.30 · high 31.40 · out of range fair
Sun 00:00 0.42 · high 14.00 · high 31.40 · out of range poor
Sun 01:00 0.42 · high 10.10 · high 31.30 · out of range poor
Sun 02:00 0.42 · high 11.50 · high 31.30 · out of range poor
Sun 03:00 0.42 · high 12.70 · high 31.20 · out of range poor
Sun 04:00 0.42 · high 14.70 · high 31.20 · out of range poor
Sun 05:00 0.42 · high 8.00 · high 31.10 · out of range poor
Sun 06:00 0.42 · high 12.20 · high 31.10 · out of range poor
Sun 07:00 0.42 · high 13.40 · high 31.00 · out of range poor
Sun 08:00 0.40 · high 16.60 · high 31.00 · out of range poor
Sun 09:00 0.40 · high 19.40 · high 30.90 · out of range poor
Sun 10:00 0.40 · high 19.50 · high 30.90 · out of range poor
Sun 11:00 0.40 · high 16.40 · high 30.80 · out of range fair
Sun 12:00 0.40 · high 14.50 · high 30.80 · out of range fair
Sun 13:00 0.40 · high 14.80 · high 30.80 · out of range poor
Sun 14:00 0.42 · high 22.40 · high 30.90 · out of range fair
Sun 15:00 0.42 · high 18.40 · high 30.90 · out of range fair
Sun 16:00 0.44 · high 14.80 · high 31.00 · out of range fair
Sun 17:00 0.44 · high 14.90 · high 31.00 · out of range fair
Sun 18:00 0.46 · high 25.10 · high 31.10 · out of range fair
Sun 19:00 0.46 · high 14.20 · high 31.10 · out of range fair
Sun 20:00 0.46 · high 15.00 · high 31.10 · out of range poor
Sun 21:00 0.46 · high 11.40 · high 31.10 · out of range poor
Sun 22:00 0.46 · high 17.10 · high 31.10 · out of range poor
Sun 23:00 0.48 · high 12.60 · high 31.10 · out of range poor
Mon 00:00 0.48 · high 14.80 · high 31.10 · out of range poor
Mon 01:00 0.50 · high 13.80 · high 31.10 · out of range poor
Mon 02:00 0.50 · high 11.30 · high 31.10 · out of range poor
Mon 03:00 0.52 · high 10.90 · high 31.00 · out of range poor
Mon 04:00 0.52 · high 12.70 · high 31.00 · out of range poor
Mon 05:00 0.54 · high 14.10 · high 30.90 · out of range poor
Mon 06:00 0.54 · high 17.40 · high 30.90 · out of range poor
Mon 07:00 0.54 · high 17.10 · high 30.80 · out of range poor
Mon 08:00 0.52 · high 16.30 · high 30.80 · out of range poor
Mon 09:00 0.52 · high 15.20 · high 30.70 · out of range poor
Mon 10:00 0.50 · high 14.80 · high 30.70 · out of range poor
Mon 11:00 0.50 · high 15.30 · high 30.60 · out of range fair
Mon 12:00 0.48 · high 16.10 · high 30.60 · out of range fair
Mon 13:00 0.48 · high 16.90 · high 30.60 · out of range poor
Mon 14:00 0.46 · high 15.60 · high 30.70 · out of range fair
Mon 15:00 0.46 · high 14.90 · high 30.80 · out of range poor
Mon 16:00 0.46 · high 17.40 · high 30.80 · out of range fair
Mon 17:00 0.48 · high 17.10 · high 30.90 · out of range fair
Mon 18:00 0.48 · high 15.30 · high 30.90 · out of range fair
Mon 19:00 0.48 · high 15.60 · high 31.00 · out of range fair
Mon 20:00 0.48 · high 18.10 · high 31.00 · out of range fair
Mon 21:00 0.48 · high 19.90 · high 31.00 · out of range fair
Mon 22:00 0.48 · high 19.60 · high 31.00 · out of range fair
Mon 23:00 0.46 · high 19.00 · high 31.00 · out of range fair
Tue 00:00 0.46 · high 17.00 · high 31.00 · out of range poor
Tue 01:00 0.44 · high 13.40 · high 31.00 · out of range poor
Tue 02:00 0.44 · high 12.60 · high 31.00 · out of range poor
Tue 03:00 0.42 · high 11.00 · high 30.90 · out of range poor
Tue 04:00 0.42 · high 10.50 · high 30.90 · out of range poor
Tue 05:00 0.42 · high 11.20 · high 30.90 · out of range poor
Tue 06:00 0.42 · high 10.80 · high 30.80 · out of range poor
Tue 07:00 0.40 · high 10.90 · high 30.80 · out of range poor
Tue 08:00 0.38 · high 10.90 · high 30.70 · out of range poor
Tue 09:00 0.36 · good 9.00 · high 30.70 · out of range poor
Tue 10:00 0.34 · good 8.80 · high 30.60 · out of range poor
Tue 11:00 0.32 · good 8.00 · high 30.60 · out of range fair
Tue 12:00 0.26 · good 3.70 · good 30.50 · out of range excellent
Tue 13:00 0.26 · good 6.50 · high 30.60 · out of range good
Tue 14:00 0.26 · good 7.20 · high 30.60 · out of range fair
Tue 15:00 0.26 · good 9.00 · high 30.70 · out of range fair
Tue 16:00 0.24 · good 13.00 · high 30.80 · out of range fair
Tue 17:00 0.24 · good 15.50 · high 30.90 · out of range fair
Tue 18:00 0.22 · good 15.80 · high 31.00 · out of range good
Tue 19:00 0.22 · good 14.80 · high 31.00 · out of range good
Tue 20:00 0.22 · good 13.40 · high 31.00 · out of range good