SnorkelForecast.com

Key Largo Snorkel Report Today

USA · Updated Sat 05:02 (EDT) · Source: Snapshot · Showing fallback/stale data

The skinny

Go in the best window Report Mon 17:52

Key Largo has a usable snorkeling window around Mon 19:00. The main thing to watch is waves.

Score: 5.6/10

Best time: Mon 19:00

Main risk: Waves

No useful morning window is showing yet.

Best afternoon signal: Mon 19:00 (Good). Peak afternoon wind is about 4.3 m/s.

Email me when it is good

Sunrise

06:43

Sunset

20:12

Water

31.4°C

Max air

30.2°C

Sky

Clear

25% cloud

Good window is available today

Next safe window: Mon 23:00 (14% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Monday

✅ good conditions

Main blocker: Waves

Tuesday

❌ poor conditions

Main blocker: Waves

Best available hours

Next safe window starts at Mon 23:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (7 hours)
  • Sea temperature (7 hours)
  • Darkness (5 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.

Nearby alternatives in USA

Bahia Honda

97 km away

✅ Good

Looe Key

114 km away

✅ Good

Dry Tortugas

250 km away

✅ Good

Crystal River

475 km away

⚠️ Fair

Advanced forecast data

Viewing historical data

Wed 21:00 – Sat 21:00 (EDT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.69 around Thu 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.

24/24 sampled hours stay at or below 0.36m (range 0.3m to 0.36m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.57 to 4.51m/s).

Tides range from -0.53m to 0.03m; 3 of 24 hours are in or near peak slack windows.

72-hour historical overview
good 🌟 Good
fair ⚠️ Fair
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
good 🌟 Good
good 🌟 Good
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
good 🌟 Good
good 🌟 Good
fair ⚠️ Fair
fair ⚠️ Fair
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
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
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 21:00 0.36 · good 4.51 · good 31.10 · out of range good
Wed 22:00 0.36 · good 4.11 · good 31.10 · out of range fair
Wed 23:00 0.34 · good 4.17 · good 31.10 · out of range good
Thu 00:00 0.34 · good 1.20 · good 31.10 · out of range poor
Thu 01:00 0.34 · good 0.64 · good 31.10 · out of range poor
Thu 02:00 0.32 · good 1.64 · good 31.00 · out of range poor
Thu 03:00 0.32 · good 0.57 · good 31.00 · out of range poor
Thu 04:00 0.32 · good 0.89 · good 31.00 · out of range poor
Thu 05:00 0.32 · good 3.58 · good 31.00 · out of range poor
Thu 06:00 0.32 · good 3.32 · good 30.90 · out of range poor
Thu 07:00 0.32 · good 2.33 · good 30.90 · out of range poor
Thu 08:00 0.30 · good 2.00 · good 30.90 · out of range poor
Thu 09:00 0.30 · good 1.77 · good 30.80 · out of range poor
Thu 10:00 0.30 · good 1.70 · good 30.80 · out of range poor
Thu 11:00 0.30 · good 1.63 · good 30.80 · out of range good
Thu 12:00 0.30 · good 1.43 · good 30.80 · out of range good
Thu 13:00 0.30 · good 0.64 · good 30.80 · out of range good
Thu 14:00 0.30 · good 0.73 · good 30.90 · out of range good
Thu 15:00 0.30 · good 1.32 · good 31.00 · out of range good
Thu 16:00 0.30 · good 1.68 · good 31.00 · out of range good
Thu 17:00 0.30 · good 1.50 · good 31.10 · out of range good
Thu 18:00 0.30 · good 2.60 · good 31.20 · out of range good
Thu 19:00 0.30 · good 3.69 · good 31.20 · out of range good
Thu 20:00 0.30 · good 3.73 · good 31.20 · out of range good
Thu 21:00 0.30 · good 3.36 · good 31.20 · out of range good
Thu 22:00 0.30 · good 2.26 · good 31.20 · out of range good
Thu 23:00 0.30 · good 2.60 · good 31.20 · out of range good
Fri 00:00 0.30 · good 2.66 · good 31.20 · out of range poor
Fri 01:00 0.28 · good 2.64 · good 31.20 · out of range poor
Fri 02:00 0.28 · good 2.48 · good 31.20 · out of range poor
Fri 03:00 0.26 · good 2.86 · good 31.20 · out of range poor
Fri 04:00 0.26 · good 2.80 · good 31.10 · out of range poor
Fri 05:00 0.26 · good 2.14 · good 31.10 · out of range poor
Fri 06:00 0.26 · good 1.30 · good 31.10 · out of range poor
Fri 07:00 0.26 · good 1.12 · good 31.10 · out of range poor
Fri 08:00 0.26 · good 0.82 · good 31.00 · out of range poor
Fri 09:00 0.26 · good 0.20 · good 31.00 · out of range poor
Fri 10:00 0.26 · good 0.20 · good 31.00 · out of range poor
Fri 11:00 0.26 · good 0.14 · good 31.00 · out of range good
Fri 12:00 0.26 · good 0.50 · good 31.00 · out of range good
Fri 13:00 0.26 · good 0.72 · good 31.00 · out of range good
Fri 14:00 0.26 · good 1.08 · good 31.10 · out of range good
Fri 15:00 0.26 · good 1.97 · good 31.10 · out of range good
Fri 16:00 0.28 · good 3.49 · good 31.20 · out of range good
Fri 17:00 0.28 · good 4.48 · good 31.30 · out of range fair
Fri 18:00 0.30 · good 5.15 · good 31.30 · out of range fair
Fri 19:00 0.30 · good 5.24 · good 31.40 · out of range good
Fri 20:00 0.30 · good 5.19 · good 31.40 · out of range good
Fri 21:00 0.30 · good 5.33 · good 31.40 · out of range good
Fri 22:00 0.28 · good 4.40 · good 31.40 · out of range good
Fri 23:00 0.28 · good 3.76 · good 31.40 · out of range good
Sat 00:00 0.26 · good 3.70 · good 31.40 · out of range poor
Sat 01:00 0.26 · good 1.52 · good 31.40 · out of range poor
Sat 02:00 0.26 · good 2.10 · good 31.40 · out of range poor
Sat 03:00 0.26 · good 2.27 · good 31.40 · out of range poor
Sat 04:00 0.24 · good 2.56 · good 31.30 · out of range poor
Sat 05:00 0.24 · good 2.33 · good 31.30 · out of range poor
Sat 06:00 0.26 · good 3.76 · good 31.20 · out of range poor
Sat 07:00 0.30 · good 4.48 · good 31.10 · out of range poor
Sat 08:00 0.32 · good 4.89 · good 31.10 · out of range poor
Sat 09:00 0.36 · good 5.45 · high 31.10 · out of range poor
Sat 10:00 0.40 · high 5.81 · high 31.00 · out of range poor
Sat 11:00 0.44 · high 5.52 · high 31.00 · out of range fair
Sat 12:00 0.48 · high 5.75 · high 31.00 · out of range fair
Sat 13:00 0.50 · high 5.46 · high 31.10 · out of range fair
Sat 14:00 0.50 · high 5.46 · high 31.10 · out of range fair
Sat 15:00 0.52 · high 5.14 · good 31.20 · out of range fair
Sat 16:00 0.52 · high 5.05 · good 31.30 · out of range fair
Sat 17:00 0.52 · high 5.91 · high 31.30 · out of range fair
Sat 18:00 0.52 · high 5.32 · good 31.40 · out of range fair
Sat 19:00 0.50 · high 4.65 · good 31.40 · out of range fair
Sat 20:00 0.50 · high 5.55 · high 31.50 · out of range fair