SnorkelForecast.com

Key Largo Snorkel Report Today

USA · Updated Tue 04:14 (EDT) · Source: Snapshot

The skinny

Go in the best window Report Tue 21:21

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

No useful morning window is showing yet.

No useful afternoon window is showing yet.

Email me when it is good

Sunrise

06:44

Sunset

20:11

Water

31.2°C

Max air

28.3°C

Sky

Clear

0% cloud

Good window is available today

Next safe window: Wed 15:00 (20% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Tuesday

❌ poor conditions

Main blocker: Waves

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 (50 hours)
  • Waves (30 hours)
  • Wind (24 hours)

Jellyfish drift risk

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

Low · 32/100

Low peak drift risk around Wed 03:00.

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: 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

Fri 01:00 – Mon 01:00 (EDT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.46 around Fri 08:00; 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.

0/24 sampled hours stay at or below 0.36m (range 0.68m to 0.88m).

Wind is at or below 5.4m/s in 3/24 sampled hours (range 5.1 to 6.95m/s).

Tides range from -0.5m to -0.07m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
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
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
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
Fri 01:00 0.78 · high 6.04 · high 31.50 · out of range poor
Fri 02:00 0.78 · high 6.11 · high 31.40 · out of range poor
Fri 03:00 0.78 · high 6.26 · high 31.40 · out of range poor
Fri 04:00 0.82 · high 6.31 · high 31.30 · out of range poor
Fri 05:00 0.84 · high 5.24 · good 31.20 · out of range poor
Fri 06:00 0.88 · high 5.17 · good 31.20 · out of range poor
Fri 07:00 0.86 · high 6.24 · high 31.10 · out of range poor
Fri 08:00 0.82 · high 5.63 · high 31.10 · out of range poor
Fri 09:00 0.80 · high 5.85 · high 31.00 · out of range poor
Fri 10:00 0.80 · high 6.04 · high 31.00 · out of range poor
Fri 11:00 0.78 · high 6.14 · high 30.90 · out of range fair
Fri 12:00 0.78 · high 5.97 · high 30.90 · out of range fair
Fri 13:00 0.76 · high 5.63 · high 30.90 · out of range fair
Fri 14:00 0.76 · high 6.14 · high 31.00 · out of range fair
Fri 15:00 0.74 · high 5.87 · high 31.00 · out of range fair
Fri 16:00 0.72 · high 5.43 · high 31.00 · out of range fair
Fri 17:00 0.72 · high 5.89 · high 31.10 · out of range poor
Fri 18:00 0.70 · high 6.02 · high 31.10 · out of range fair
Fri 19:00 0.70 · high 5.45 · high 31.20 · out of range fair
Fri 20:00 0.68 · high 5.91 · high 31.20 · out of range fair
Fri 21:00 0.68 · high 6.95 · high 31.20 · out of range fair
Fri 22:00 0.70 · high 6.01 · high 31.20 · out of range fair
Fri 23:00 0.74 · high 5.73 · high 31.20 · out of range fair
Sat 00:00 0.76 · high 5.10 · good 31.20 · out of range poor
Sat 01:00 0.74 · high 5.45 · high 31.20 · out of range poor
Sat 02:00 0.74 · high 5.98 · high 31.10 · out of range poor
Sat 03:00 0.72 · high 4.31 · good 31.10 · out of range poor
Sat 04:00 0.72 · high 5.66 · high 31.00 · out of range poor
Sat 05:00 0.74 · high 7.98 · high 30.90 · out of range poor
Sat 06:00 0.74 · high 6.01 · high 30.90 · out of range poor
Sat 07:00 0.74 · high 6.15 · high 30.80 · out of range poor
Sat 08:00 0.72 · high 7.22 · high 30.80 · out of range poor
Sat 09:00 0.72 · high 7.31 · high 30.70 · out of range poor
Sat 10:00 0.70 · high 6.88 · high 30.70 · out of range poor
Sat 11:00 0.70 · high 6.47 · high 30.60 · out of range fair
Sat 12:00 0.68 · high 6.16 · high 30.60 · out of range fair
Sat 13:00 0.66 · high 5.98 · high 30.60 · out of range fair
Sat 14:00 0.66 · high 5.74 · high 30.70 · out of range fair
Sat 15:00 0.64 · high 6.01 · high 30.70 · out of range fair
Sat 16:00 0.62 · high 6.12 · high 30.80 · out of range fair
Sat 17:00 0.58 · high 6.02 · high 30.80 · out of range fair
Sat 18:00 0.56 · high 5.73 · high 30.90 · out of range fair
Sat 19:00 0.56 · high 5.66 · high 30.90 · out of range fair
Sat 20:00 0.54 · high 6.07 · high 30.90 · out of range fair
Sat 21:00 0.54 · high 7.70 · high 31.00 · out of range fair
Sat 22:00 0.54 · high 7.18 · high 31.00 · out of range fair
Sat 23:00 0.52 · high 5.65 · high 31.00 · out of range fair
Sun 00:00 0.52 · high 4.47 · good 31.00 · out of range poor
Sun 01:00 0.52 · high 3.47 · good 31.00 · out of range poor
Sun 02:00 0.54 · high 3.52 · good 31.00 · out of range poor
Sun 03:00 0.54 · high 4.00 · good 31.00 · out of range poor
Sun 04:00 0.52 · high 5.00 · good 30.90 · out of range poor
Sun 05:00 0.52 · high 5.00 · good 30.90 · out of range poor
Sun 06:00 0.50 · high 4.20 · good 30.90 · out of range poor
Sun 07:00 0.50 · high 4.41 · good 30.80 · out of range poor
Sun 08:00 0.58 · high 2.36 · good 30.70 · out of range poor
Sun 09:00 0.58 · high 3.20 · good 30.70 · out of range poor
Sun 10:00 0.58 · high 4.33 · good 30.70 · out of range poor
Sun 11:00 0.58 · high 4.27 · good 30.60 · out of range fair
Sun 12:00 0.58 · high 4.40 · good 30.60 · out of range fair
Sun 13:00 0.56 · high 4.24 · good 30.60 · out of range fair
Sun 14:00 0.56 · high 4.90 · good 30.70 · out of range fair
Sun 15:00 0.54 · high 4.03 · good 30.80 · out of range fair
Sun 16:00 0.54 · high 3.95 · good 30.80 · out of range fair
Sun 17:00 0.52 · high 3.40 · good 30.90 · out of range fair
Sun 18:00 0.52 · high 3.63 · good 30.90 · out of range fair
Sun 19:00 0.54 · high 4.00 · good 31.00 · out of range fair
Sun 20:00 0.54 · high 3.70 · good 31.00 · out of range fair
Sun 21:00 0.56 · high 3.90 · good 31.10 · out of range fair
Sun 22:00 0.56 · high 4.03 · good 31.10 · out of range fair
Sun 23:00 0.58 · high 3.86 · good 31.10 · out of range fair
Mon 00:00 0.58 · high 4.20 · good 31.10 · out of range poor