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 15:01

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 5.2 m/s.

Email me when it is good

Sunrise

06:44

Sunset

20:11

Water

31.3°C

Max air

31.4°C

Sky

Cloudy

97% cloud

Good window is available today

Next safe window: Wed 22:00–23:00 (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 22:00 until 23:00.

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (32 hours)
  • Darkness (15 hours)
  • Wind (13 hours)

Jellyfish drift risk

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

Low · 31/100

Low drift risk now.

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

❌ Poor

Crystal River

475 km away

✅ Good

Advanced forecast data

Viewing historical data

Mon 19:00 – Thu 19:00 (EDT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.72 around Tue 08:00; 13 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.

10/24 sampled hours stay at or below 0.36m (range 0.22m to 0.48m).

Wind is at or below 5.4m/s in 1/24 sampled hours (range 3.7 to 19.9m/s).

Tides range from -0.46m to -0.04m; 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
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
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
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
fair ⚠️ Fair
fair ⚠️ Fair
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
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
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
fair ⚠️ Fair
fair ⚠️ Fair
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
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
Tue 21:00 0.22 · good 9.70 · high 31.10 · out of range good
Tue 22:00 0.22 · good 9.20 · high 31.10 · out of range good
Tue 23:00 0.22 · good 6.80 · high 31.10 · out of range good
Wed 00:00 0.22 · good 7.40 · high 31.10 · out of range poor
Wed 01:00 0.22 · good 6.40 · high 31.10 · out of range poor
Wed 02:00 0.22 · good 6.30 · high 31.00 · out of range poor
Wed 03:00 0.22 · good 7.40 · high 31.00 · out of range poor
Wed 04:00 0.22 · good 7.20 · high 31.00 · out of range poor
Wed 05:00 0.20 · good 9.40 · high 31.00 · out of range poor
Wed 06:00 0.20 · good 9.00 · high 30.90 · out of range poor
Wed 07:00 0.20 · good 5.90 · high 30.90 · out of range poor
Wed 08:00 0.18 · good 10.10 · high 30.90 · out of range poor
Wed 09:00 0.18 · good 8.00 · high 30.80 · out of range poor
Wed 10:00 0.18 · good 7.60 · high 30.80 · out of range poor
Wed 11:00 0.16 · good 8.00 · high 30.80 · out of range good
Wed 12:00 0.16 · good 7.60 · high 30.80 · out of range good
Wed 13:00 0.16 · good 11.00 · high 30.80 · out of range good
Wed 14:00 0.16 · good 6.40 · high 30.90 · out of range good
Wed 15:00 0.16 · good 9.40 · high 30.90 · out of range fair
Wed 16:00 0.16 · good 23.00 · high 31.00 · out of range fair
Wed 17:00 0.16 · good 9.50 · high 31.10 · out of range good
Wed 18:00 0.16 · good 9.00 · high 31.10 · out of range good
Wed 19:00 0.16 · good 9.90 · high 31.20 · out of range good
Wed 20:00 0.14 · good 18.40 · high 31.20 · out of range good
Wed 21:00 0.14 · good 8.70 · high 31.20 · out of range good
Wed 22:00 0.14 · good 4.80 · good 31.30 · out of range good
Wed 23:00 0.14 · good 6.60 · high 31.30 · out of range good
Thu 00:00 0.14 · good 11.20 · high 31.30 · out of range poor
Thu 01:00 0.14 · good 11.60 · high 31.30 · out of range poor
Thu 02:00 0.14 · good 9.70 · high 31.20 · out of range poor
Thu 03:00 0.14 · good 5.50 · high 31.20 · out of range poor
Thu 04:00 0.14 · good 7.10 · high 31.20 · out of range poor
Thu 05:00 0.14 · good 9.60 · high 31.20 · out of range poor
Thu 06:00 0.14 · good 9.90 · high 31.10 · out of range poor
Thu 07:00 0.14 · good 11.00 · high 31.10 · out of range poor
Thu 08:00 0.12 · good 11.80 · high 31.10 · out of range poor
Thu 09:00 0.12 · good 11.80 · high 31.00 · out of range poor
Thu 10:00 0.12 · good 12.20 · high 31.00 · out of range poor
Thu 11:00 0.14 · good 11.80 · high 31.00 · out of range good
Thu 12:00 0.14 · good 11.90 · high 31.00 · out of range good
Thu 13:00 0.14 · good 13.00 · high 31.00 · out of range good
Thu 14:00 0.14 · good 13.50 · high 31.10 · out of range good
Thu 15:00 0.14 · good 15.20 · high 31.20 · out of range fair
Thu 16:00 0.14 · good 16.80 · high 31.20 · out of range fair
Thu 17:00 0.14 · good 18.00 · high 31.30 · out of range good
Thu 18:00 0.14 · good 18.80 · high 31.40 · out of range good