Can you snorkel in Key Largo today?

Yes. The next good snorkeling window in Key Largo starts Wed 15:00. Around 18% of the next 72 hours are suitable.

What is the best time of day to snorkel in Key Largo?

Snorkel during daylight, ideally in the morning before the wind picks up, and around high slack tide when water is clearest and currents are weakest. SnorkelForecast scores every daylight hour in Key Largo so you can pick the calmest window.

What is the best tide for snorkeling?

High slack tide — within about an hour of the high-tide peak when currents are weakest — is the safest, clearest window. Strong low tides, strong tidal flow near channels or headlands, and large tidal-range days reduce score.

Key Largo Snorkel Report Today

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

The skinny

Go in the best window Report Tue 16:03

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

Score: 5.8/10

Best time: Wed 11:00

Main risk: Sea Temperature

No useful morning window is showing yet.

Best afternoon signal: Tue 18:00 (Fair). Peak afternoon wind is about 4.4 m/s.

Email me when it is good

Sunrise

06:44

Sunset

20:12

Water

31.2°C

Max air

31.1°C

Sky

Cloudy

100% cloud

Good window is available today

Next safe window: Wed 15:00 (18% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Tuesday

⚠️ fair 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 (55 hours)
Waves (35 hours)
Darkness (26 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 00:00, 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

⚠️ Fair

Crystal River

475 km away

✅ Good

Advanced forecast data

Viewing historical data

Sun 20:00 – Wed 20:00 (EDT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.63 around Mon 14:00; 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.

0/24 sampled hours stay at or below 0.36m (range 0.5m to 0.66m).

Wind is at or below 5.4m/s in 20/24 sampled hours (range 3.2 to 6.74m/s).

Tides range from -0.56m to -0.08m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview

Sun 20:00 fair ⚠️ Fair

Sun 21:00 fair ⚠️ Fair

Sun 22:00 fair ⚠️ Fair

Sun 23:00 fair ⚠️ Fair

Mon 00:00 poor ❌ Limited

Mon 01:00 poor ❌ Limited

Mon 02:00 poor ❌ Limited

Mon 03:00 poor ❌ Limited

Mon 04:00 poor ❌ Limited

Mon 05:00 poor ❌ Limited

Mon 06:00 poor ❌ Limited

Mon 07:00 poor ❌ Limited

Mon 08:00 poor ❌ Limited

Mon 09:00 poor ❌ Limited

Mon 10:00 poor ❌ Limited

Mon 11:00 fair ⚠️ Fair

Mon 12:00 fair ⚠️ Fair

Mon 13:00 fair ⚠️ Fair

Mon 14:00 fair ⚠️ Fair

Mon 15:00 good 🌟 Good

Mon 16:00 good 🌟 Good

Mon 17:00 good 🌟 Good

Mon 18:00 good 🌟 Good

Mon 19:00 good 🌟 Good

Mon 20:00 good 🌟 Good

Mon 21:00 good 🌟 Good

Mon 22:00 good 🌟 Good

Mon 23:00 good 🌟 Good

Tue 00:00 poor ❌ Limited

Tue 01:00 poor ❌ Limited

Tue 02:00 poor ❌ Limited

Tue 03:00 poor ❌ Limited

Tue 04:00 poor ❌ Limited

Tue 05:00 poor ❌ Limited

Tue 06:00 poor ❌ Limited

Tue 07:00 poor ❌ Limited

Tue 08:00 poor ❌ Limited

Tue 09:00 poor ❌ Limited

Tue 10:00 poor ❌ Limited

Tue 11:00 good 🌟 Good

Tue 12:00 fair ⚠️ Fair

Tue 13:00 fair ⚠️ Fair

Tue 14:00 fair ⚠️ Fair

Tue 15:00 fair ⚠️ Fair

Tue 16:00 fair ⚠️ Fair

Tue 17:00 fair ⚠️ Fair

Tue 18:00 good 🌟 Good

Tue 19:00 good 🌟 Good

Tue 20:00 fair ⚠️ Fair

Tue 21:00 fair ⚠️ Fair

Tue 22:00 good 🌟 Good

Tue 23:00 fair ⚠️ Fair

Wed 00:00 poor ❌ Limited

Wed 01:00 poor ❌ Limited

Wed 02:00 poor ❌ Limited

Wed 03:00 poor ❌ Limited

Wed 04:00 poor ❌ Limited

Wed 05:00 poor ❌ Limited

Wed 06:00 poor ❌ Limited

Wed 07:00 poor ❌ Limited

Wed 08:00 poor ❌ Limited

Wed 09:00 poor ❌ Limited

Wed 10:00 poor ❌ Limited

Wed 11:00 good 🌟 Good

Wed 12:00 good 🌟 Good

Wed 13:00 good 🌟 Good

Wed 14:00 fair ⚠️ Fair

Wed 15:00 fair ⚠️ Fair

Wed 16:00 fair ⚠️ Fair

Wed 17:00 fair ⚠️ Fair

Wed 18:00 fair ⚠️ Fair

Wed 19:00 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
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
Mon 01:00	0.60 · high	3.95 · good	31.10 · out of range	poor
Mon 02:00	0.60 · high	4.05 · good	31.10 · out of range	poor
Mon 03:00	0.62 · high	4.61 · good	31.00 · out of range	poor
Mon 04:00	0.62 · high	4.16 · good	31.00 · out of range	poor
Mon 05:00	0.64 · high	4.65 · good	30.90 · out of range	poor
Mon 06:00	0.64 · high	5.12 · good	30.90 · out of range	poor
Mon 07:00	0.64 · high	5.22 · good	30.80 · out of range	poor
Mon 08:00	0.66 · high	6.26 · high	30.80 · out of range	poor
Mon 09:00	0.66 · high	5.55 · high	30.80 · out of range	poor
Mon 10:00	0.64 · high	6.74 · high	30.70 · out of range	poor
Mon 11:00	0.62 · high	5.78 · high	30.70 · out of range	fair
Mon 12:00	0.60 · high	4.88 · good	30.70 · out of range	fair
Mon 13:00	0.58 · high	3.86 · good	30.80 · out of range	fair
Mon 14:00	0.58 · high	3.94 · good	30.80 · out of range	fair
Mon 15:00	0.56 · high	3.67 · good	30.90 · out of range	good
Mon 16:00	0.54 · high	3.20 · good	31.00 · out of range	good
Mon 17:00	0.54 · high	3.76 · good	31.00 · out of range	good
Mon 18:00	0.52 · high	3.33 · good	31.10 · out of range	good
Mon 19:00	0.50 · high	3.89 · good	31.10 · out of range	good
Mon 20:00	0.50 · high	4.37 · good	31.20 · out of range	good
Mon 21:00	0.48 · high	4.20 · good	31.20 · out of range	good
Mon 22:00	0.46 · high	4.58 · good	31.20 · out of range	good
Mon 23:00	0.46 · high	4.59 · good	31.20 · out of range	good
Tue 00:00	0.44 · high	4.77 · good	31.20 · out of range	poor
Tue 01:00	0.46 · high	2.76 · good	31.20 · out of range	poor
Tue 02:00	0.46 · high	2.48 · good	31.20 · out of range	poor
Tue 03:00	0.48 · high	2.95 · good	31.10 · out of range	poor
Tue 04:00	0.48 · high	3.64 · good	31.10 · out of range	poor
Tue 05:00	0.50 · high	3.23 · good	31.00 · out of range	poor
Tue 06:00	0.50 · high	2.69 · good	31.00 · out of range	poor
Tue 07:00	0.50 · high	3.35 · good	30.90 · out of range	poor
Tue 08:00	0.48 · high	3.75 · good	30.90 · out of range	poor
Tue 09:00	0.48 · high	3.95 · good	30.90 · out of range	poor
Tue 10:00	0.48 · high	3.82 · good	30.80 · out of range	poor
Tue 11:00	0.50 · high	3.81 · good	30.80 · out of range	good
Tue 12:00	0.50 · high	5.00 · good	30.80 · out of range	fair
Tue 13:00	0.50 · high	5.47 · high	30.90 · out of range	fair
Tue 14:00	0.52 · high	5.07 · good	30.90 · out of range	fair
Tue 15:00	0.52 · high	5.23 · good	31.00 · out of range	fair
Tue 16:00	0.54 · high	5.47 · high	31.10 · out of range	fair
Tue 17:00	0.54 · high	5.56 · high	31.20 · out of range	fair
Tue 18:00	0.56 · high	5.41 · high	31.20 · out of range	good
Tue 19:00	0.54 · high	5.64 · high	31.30 · out of range	good
Tue 20:00	0.54 · high	5.29 · good	31.30 · out of range	fair
Tue 21:00	0.52 · high	5.12 · good	31.30 · out of range	fair
Tue 22:00	0.50 · high	4.96 · good	31.30 · out of range	good
Tue 23:00	0.50 · high	5.12 · good	31.30 · out of range	fair
Wed 00:00	0.48 · high	5.01 · good	31.30 · out of range	poor
Wed 01:00	0.48 · high	4.60 · good	31.30 · out of range	poor
Wed 02:00	0.48 · high	3.98 · good	31.30 · out of range	poor
Wed 03:00	0.48 · high	4.08 · good	31.20 · out of range	poor
Wed 04:00	0.50 · high	4.34 · good	31.20 · out of range	poor
Wed 05:00	0.52 · high	4.51 · good	31.10 · out of range	poor
Wed 06:00	0.54 · high	5.00 · good	31.10 · out of range	poor
Wed 07:00	0.42 · high	4.53 · good	30.80 · out of range	poor
Wed 08:00	0.40 · high	4.47 · good	30.70 · out of range	poor
Wed 09:00	0.40 · high	4.46 · good	30.70 · out of range	poor
Wed 10:00	0.40 · high	5.13 · good	30.70 · out of range	poor
Wed 11:00	0.38 · high	4.76 · good	30.60 · out of range	good
Wed 12:00	0.38 · high	4.92 · good	30.60 · out of range	good
Wed 13:00	0.40 · high	5.86 · high	30.70 · out of range	good
Wed 14:00	0.44 · high	6.14 · high	30.70 · out of range	fair
Wed 15:00	0.46 · high	5.92 · high	30.80 · out of range	fair
Wed 16:00	0.44 · high	6.15 · high	30.90 · out of range	fair
Wed 17:00	0.44 · high	5.72 · high	30.90 · out of range	fair
Wed 18:00	0.42 · high	5.12 · good	31.00 · out of range	fair
Wed 19:00	0.40 · high	4.60 · good	31.00 · out of range	good