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 07:27

Key Largo has a usable snorkeling window around Wed 11:00. The main thing to watch is sea temperature.

Score: 7.0/10

Best time: Wed 11:00

Main risk: Sea Temperature

Best morning signal: Wed 11:00 (Good).

Best afternoon signal: Wed 18:00 (Good). Peak afternoon wind is about 6.3 m/s.

Email me when it is good

Sunrise

06:44

Sunset

20:11

Water

30.8°C

Max air

31.5°C

Sky

Partly cloudy

63% cloud

Good window is available today

Next safe window: Wed 15:00 (25% 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 15:00.

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (40 hours)
  • Waves (20 hours)
  • Wind (19 hours)

Jellyfish drift risk

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

Low · 31/100

Low peak drift risk around Wed 15:00.

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

⚠️ Fair

Crystal River

475 km away

✅ Good

Advanced forecast data

Viewing historical data

Sat 11:00 – Tue 11:00 (EDT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.52 around Sat 07:00; 12 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.

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

Wind is at or below 5.4m/s in 0/24 sampled hours (range 7.1 to 18.7m/s).

Tides range from -0.42m to -0.06m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
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
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
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
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
fair ⚠️ Fair
good 🌟 Good
fair ⚠️ Fair
good 🌟 Good
good 🌟 Good
fair ⚠️ Fair
good 🌟 Good
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
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 11:00 0.28 · good 11.80 · high 31.60 · out of range fair
Sat 12:00 0.30 · good 13.80 · high 31.60 · out of range fair
Sat 13:00 0.28 · good 8.20 · high 31.70 · out of range fair
Sat 14:00 0.28 · good 17.70 · high 31.70 · out of range fair
Sat 15:00 0.26 · good 17.20 · high 31.80 · out of range fair
Sat 16:00 0.26 · good 14.80 · high 31.90 · out of range fair
Sat 17:00 0.26 · good 14.80 · high 31.90 · out of range poor
Sat 18:00 0.26 · good 16.30 · high 32.00 · out of range fair
Sat 19:00 0.26 · good 18.70 · high 32.00 · out of range fair
Sat 20:00 0.26 · good 15.90 · high 32.00 · out of range fair
Sat 21:00 0.26 · good 14.70 · high 32.10 · out of range fair
Sat 22:00 0.26 · good 11.00 · high 32.10 · out of range fair
Sat 23:00 0.24 · good 8.40 · high 32.10 · out of range fair
Sun 00:00 0.24 · good 11.20 · high 32.10 · out of range poor
Sun 01:00 0.24 · good 10.10 · high 32.10 · out of range poor
Sun 02:00 0.26 · good 7.10 · high 32.00 · out of range poor
Sun 03:00 0.26 · good 7.20 · high 32.00 · out of range poor
Sun 04:00 0.28 · good 10.10 · high 32.00 · out of range poor
Sun 05:00 0.32 · good 12.20 · high 31.90 · out of range poor
Sun 06:00 0.34 · good 13.00 · high 31.90 · out of range poor
Sun 07:00 0.34 · good 12.00 · high 31.80 · out of range poor
Sun 08:00 0.36 · good 11.40 · high 31.80 · out of range poor
Sun 09:00 0.36 · good 12.30 · high 31.70 · out of range poor
Sun 10:00 0.36 · good 11.70 · high 31.70 · out of range poor
Sun 11:00 0.34 · good 9.70 · high 31.70 · out of range fair
Sun 12:00 0.34 · good 8.70 · high 31.70 · out of range fair
Sun 13:00 0.32 · good 8.70 · high 31.70 · out of range fair
Sun 14:00 0.32 · good 12.70 · high 31.70 · out of range fair
Sun 15:00 0.30 · good 14.30 · high 31.80 · out of range fair
Sun 16:00 0.30 · good 12.40 · high 31.90 · out of range fair
Sun 17:00 0.28 · good 12.70 · high 31.90 · out of range fair
Sun 18:00 0.28 · good 14.20 · high 32.00 · out of range fair
Sun 19:00 0.28 · good 14.60 · high 32.00 · out of range fair
Sun 20:00 0.26 · good 14.30 · high 32.00 · out of range fair
Sun 21:00 0.26 · good 13.80 · high 32.10 · out of range fair
Sun 22:00 0.30 · good 13.50 · high 32.10 · out of range fair
Sun 23:00 0.36 · good 14.60 · high 32.10 · out of range fair
Mon 00:00 0.40 · high 14.20 · high 32.10 · out of range poor
Mon 01:00 0.40 · high 9.80 · high 32.00 · out of range poor
Mon 02:00 0.42 · high 13.90 · high 32.00 · out of range poor
Mon 03:00 0.42 · high 14.30 · high 31.90 · out of range poor
Mon 04:00 0.40 · high 14.50 · high 31.90 · out of range poor
Mon 05:00 0.40 · high 14.50 · high 31.80 · out of range poor
Mon 06:00 0.38 · high 16.50 · high 31.80 · out of range poor
Mon 07:00 0.36 · good 14.60 · high 31.70 · out of range poor
Mon 08:00 0.36 · good 14.50 · high 31.70 · out of range poor
Mon 09:00 0.34 · good 12.30 · high 31.60 · out of range poor
Mon 10:00 0.38 · high 3.77 · good 31.60 · out of range poor
Mon 11:00 0.36 · good 3.40 · good 31.50 · out of range good
Mon 12:00 0.34 · good 2.55 · good 31.50 · out of range good
Mon 13:00 0.32 · good 2.56 · good 31.50 · out of range good
Mon 14:00 0.32 · good 1.70 · good 31.60 · out of range good
Mon 15:00 0.30 · good 7.38 · high 31.70 · out of range fair
Mon 16:00 0.28 · good 1.84 · good 31.70 · out of range good
Mon 17:00 0.28 · good 1.99 · good 31.80 · out of range fair
Mon 18:00 0.26 · good 2.41 · good 31.80 · out of range good
Mon 19:00 0.26 · good 0.20 · good 31.90 · out of range good
Mon 20:00 0.24 · good 2.60 · good 31.90 · out of range fair
Mon 21:00 0.24 · good 2.92 · good 32.00 · out of range good
Mon 22:00 0.24 · good 3.27 · good 32.00 · out of range good
Mon 23:00 0.22 · good 1.70 · good 32.00 · out of range good
Tue 00:00 0.22 · good 2.85 · good 32.00 · out of range poor
Tue 01:00 0.20 · good 2.13 · good 32.00 · out of range poor
Tue 02:00 0.20 · good 1.39 · good 32.00 · out of range poor
Tue 03:00 0.18 · good 2.30 · good 31.90 · out of range poor
Tue 04:00 0.18 · good 3.36 · good 31.90 · out of range poor
Tue 05:00 0.20 · good 3.94 · good 31.80 · out of range poor
Tue 06:00 0.20 · good 3.67 · good 31.80 · out of range poor
Tue 07:00 0.22 · good 4.21 · good 31.70 · out of range poor
Tue 08:00 0.24 · good 3.81 · good 31.70 · out of range poor
Tue 09:00 0.26 · good 3.77 · good 31.70 · out of range poor
Tue 10:00 0.26 · good 4.06 · good 31.60 · out of range poor