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 04:10

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

Score: 6.2/10

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

30.9°C

Max air

31.5°C

Sky

Clear

18% cloud

Good window is available today

Next safe window: Wed 15:00 (23% 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 (43 hours)
  • Waves (23 hours)
  • Wind (22 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: Wed 10:00

Wed 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

Mon 08:00 – Thu 08:00 (EDT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.69 around Mon 19:00; 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.

23/24 sampled hours stay at or below 0.36m (range 0.18m to 0.38m).

Wind is at or below 5.4m/s in 21/24 sampled hours (range 0.2 to 14.5m/s).

Tides range from -0.39m to -0.08m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
fair ⚠️ Fair
good 🌟 Good
fair ⚠️ Fair
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
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
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 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
Tue 11:00 0.24 · good 4.16 · good 31.60 · out of range good
Tue 12:00 0.24 · good 4.03 · good 31.60 · out of range good
Tue 13:00 0.24 · good 3.88 · good 31.70 · out of range good
Tue 14:00 0.22 · good 3.89 · good 31.70 · out of range good
Tue 15:00 0.22 · good 3.72 · good 31.80 · out of range good
Tue 16:00 0.22 · good 2.88 · good 31.90 · out of range good
Tue 17:00 0.22 · good 6.00 · high 32.00 · out of range fair
Tue 18:00 0.22 · good 2.40 · good 32.00 · out of range good
Tue 19:00 0.24 · good 6.62 · high 32.10 · out of range fair
Tue 20:00 0.26 · good 6.21 · high 32.10 · out of range fair
Tue 21:00 0.28 · good 1.25 · good 32.10 · out of range good
Tue 22:00 0.30 · good 0.98 · good 32.10 · out of range good
Tue 23:00 0.32 · good 2.43 · good 32.10 · out of range good
Wed 00:00 0.34 · good 1.61 · good 32.10 · out of range poor
Wed 01:00 0.36 · good 2.64 · good 32.10 · out of range poor
Wed 02:00 0.36 · good 2.82 · good 32.10 · out of range poor
Wed 03:00 0.38 · high 2.98 · good 32.00 · out of range poor
Wed 04:00 0.38 · high 3.55 · good 32.00 · out of range poor
Wed 05:00 0.38 · high 4.22 · good 31.90 · out of range poor
Wed 06:00 0.38 · high 4.34 · good 31.90 · out of range poor
Wed 07:00 0.38 · high 4.70 · good 31.80 · out of range poor
Wed 08:00 0.40 · high 5.16 · good 31.80 · out of range poor
Wed 09:00 0.40 · high 5.26 · good 31.70 · out of range poor
Wed 10:00 0.42 · high 5.61 · high 31.70 · out of range poor
Wed 11:00 0.42 · high 5.66 · high 31.70 · out of range fair
Wed 12:00 0.44 · high 5.27 · good 31.70 · out of range fair
Wed 13:00 0.46 · high 4.92 · good 31.70 · out of range fair
Wed 14:00 0.50 · high 4.44 · good 31.70 · out of range fair
Wed 15:00 0.52 · high 4.78 · good 31.80 · out of range fair
Wed 16:00 0.54 · high 5.07 · good 31.80 · out of range fair
Wed 17:00 0.56 · high 5.59 · high 31.90 · out of range fair
Wed 18:00 0.58 · high 5.99 · high 31.90 · out of range fair
Wed 19:00 0.58 · high 5.86 · high 31.90 · out of range fair
Wed 20:00 0.56 · high 5.28 · good 32.00 · out of range fair
Wed 21:00 0.56 · high 5.07 · good 32.00 · out of range fair
Wed 22:00 0.54 · high 5.19 · good 32.00 · out of range fair
Wed 23:00 0.54 · high 5.46 · high 32.00 · out of range fair
Thu 00:00 0.52 · high 4.98 · good 32.00 · out of range poor
Thu 01:00 0.52 · high 5.04 · good 31.90 · out of range poor
Thu 02:00 0.52 · high 5.10 · good 31.90 · out of range poor
Thu 03:00 0.52 · high 5.04 · good 31.80 · out of range poor
Thu 04:00 0.56 · high 4.70 · good 31.80 · out of range poor
Thu 05:00 0.58 · high 5.16 · good 31.70 · out of range poor
Thu 06:00 0.62 · high 5.24 · good 31.70 · out of range poor
Thu 07:00 0.64 · high 5.77 · high 31.60 · out of range poor