SnorkelForecast.com

Key Largo Snorkel Report Today

USA · Updated Tue 20:31 (EDT) · Source: Snapshot

The skinny

Go in the best window Report Tue 19:21

Key Largo has a usable snorkeling window around Wed 08:00. The main thing to watch is sea temperature.

Score: 7.5/10

Best time: Wed 08:00

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

07:03

Sunset

19:39

Water

31.5°C

Max air

29.1°C

Sky

Cloudy

100% cloud

Good window is available today

Next good model window: Wed 12:00–23:00 (41% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Tuesday

❌ Poor conditions

Main blocker: Sea temperature

Wednesday

✅ Excellent conditions

Main blocker: Sea temperature

Thursday

✅ Excellent conditions

Main blocker: Sea temperature

Best available hours

The next good model window starts at Wed 12:00 and lasts until 23:00.

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (68 hours)
  • Tide/current (36 hours)
  • Darkness (36 hours)

Jellyfish drift risk

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

Low · 34/100

Low peak drift risk around Wed 13:00.

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: Thu 08:00

Wed 20:00, Wed 23:00, Thu 08:00, Fri 00:00, Fri 04:00, Fri 09:00

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

✅ Good

Advanced forecast data

Viewing current forecast

Tue 23:00 – Fri 23:00 (EDT)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.75 around Wed 09:00; 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.

24/24 sampled hours stay at or below 0.36m (range 0.12m to 0.2m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.61 to 3.91m/s).

Tides range from -0.5m to -0.03m; 2 of 24 hours are in or near peak slack windows.

72-hour forecast overview
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Excellent ✅ Excellent
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Excellent ✅ Excellent
Excellent ✅ Excellent
Good 🌟 Good
Poor ❌ Limited
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
Excellent ✅ Excellent
Poor ❌ Limited
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
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 is better in daylight, so night hours score lower.
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Wed 00:00 0.14 · good 0.61 · good 31.50 · out of range Poor
Wed 01:00 0.14 · good 3.40 · good 31.50 · out of range Poor
Wed 02:00 0.14 · good 2.72 · good 31.50 · out of range Poor
Wed 03:00 0.14 · good 2.10 · good 31.40 · out of range Poor
Wed 04:00 0.16 · good 2.82 · good 31.40 · out of range Poor
Wed 05:00 0.16 · good 2.42 · good 31.40 · out of range Poor
Wed 06:00 0.18 · good 2.65 · good 31.30 · out of range Poor
Wed 07:00 0.18 · good 2.73 · good 31.30 · out of range Poor
Wed 08:00 0.20 · good 2.80 · good 31.20 · out of range Poor
Wed 09:00 0.20 · good 3.16 · good 31.20 · out of range Poor
Wed 10:00 0.20 · good 2.70 · good 31.20 · out of range Poor
Wed 11:00 0.18 · good 2.55 · good 31.20 · out of range Poor
Wed 12:00 0.18 · good 2.52 · good 31.20 · out of range Excellent
Wed 13:00 0.16 · good 1.98 · good 31.20 · out of range Excellent
Wed 14:00 0.16 · good 1.99 · good 31.30 · out of range Good
Wed 15:00 0.14 · good 1.61 · good 31.40 · out of range Good
Wed 16:00 0.14 · good 1.41 · good 31.50 · out of range Good
Wed 17:00 0.14 · good 1.70 · good 31.60 · out of range Good
Wed 18:00 0.14 · good 2.97 · good 31.70 · out of range Good
Wed 19:00 0.14 · good 3.91 · good 31.70 · out of range Good
Wed 20:00 0.12 · good 2.86 · good 31.70 · out of range Good
Wed 21:00 0.12 · good 0.95 · good 31.70 · out of range Excellent
Wed 22:00 0.12 · good 0.61 · good 31.70 · out of range Excellent
Wed 23:00 0.12 · good 1.66 · good 31.70 · out of range Good
Thu 00:00 0.12 · good 1.40 · good 31.70 · out of range Poor
Thu 01:00 0.12 · good 1.30 · good 31.70 · out of range Poor
Thu 02:00 0.14 · good 1.08 · good 31.60 · out of range Poor
Thu 03:00 0.14 · good 2.20 · good 31.60 · out of range Poor
Thu 04:00 0.16 · good 2.00 · good 31.60 · out of range Poor
Thu 05:00 0.20 · good 2.15 · good 31.60 · out of range Poor
Thu 06:00 0.22 · good 2.60 · good 31.50 · out of range Poor
Thu 07:00 0.20 · good 2.42 · good 31.50 · out of range Poor
Thu 08:00 0.20 · good 3.00 · good 31.40 · out of range Poor
Thu 09:00 0.18 · good 2.51 · good 31.40 · out of range Poor
Thu 10:00 0.16 · good 2.47 · good 31.40 · out of range Poor
Thu 11:00 0.16 · good 2.82 · good 31.30 · out of range Poor
Thu 12:00 0.14 · good 2.22 · good 31.30 · out of range Good
Thu 13:00 0.14 · good 2.11 · good 31.30 · out of range Good
Thu 14:00 0.12 · good 2.02 · good 31.40 · out of range Good
Thu 15:00 0.12 · good 2.24 · good 31.40 · out of range Good
Thu 16:00 0.12 · good 5.63 · high 31.50 · out of range Good
Thu 17:00 0.12 · good 3.59 · good 31.50 · out of range Good
Thu 18:00 0.12 · good 3.75 · good 31.60 · out of range Good
Thu 19:00 0.14 · good 4.56 · good 31.60 · out of range Good
Thu 20:00 0.14 · good 3.86 · good 31.60 · out of range Good
Thu 21:00 0.16 · good 3.69 · good 31.60 · out of range Good
Thu 22:00 0.18 · good 3.83 · good 31.60 · out of range Good
Thu 23:00 0.18 · good 3.08 · good 31.50 · out of range Excellent
Fri 00:00 0.20 · good 1.89 · good 31.50 · out of range Poor
Fri 01:00 0.22 · good 2.09 · good 31.50 · out of range Poor
Fri 02:00 0.22 · good 2.86 · good 31.50 · out of range Poor
Fri 03:00 0.24 · good 3.33 · good 31.40 · out of range Poor
Fri 04:00 0.28 · good 3.44 · good 31.40 · out of range Poor
Fri 05:00 0.32 · good 3.66 · good 31.40 · out of range Poor
Fri 06:00 0.36 · good 3.69 · good 31.30 · out of range Poor
Fri 07:00 0.36 · good 3.83 · good 31.30 · out of range Poor
Fri 08:00 0.38 · high 3.66 · good 31.20 · out of range Poor
Fri 09:00 0.38 · high 3.66 · good 31.20 · out of range Poor
Fri 10:00 0.36 · good 3.74 · good 31.10 · out of range Poor
Fri 11:00 0.36 · good 3.41 · good 31.10 · out of range Poor
Fri 12:00 0.34 · good 3.02 · good 31.10 · out of range Good
Fri 13:00 0.34 · good 3.75 · good 31.10 · out of range Good
Fri 14:00 0.32 · good 3.97 · good 31.10 · out of range Good
Fri 15:00 0.32 · good 3.96 · good 31.10 · out of range Good
Fri 16:00 0.32 · good 4.19 · good 31.20 · out of range Fair
Fri 17:00 0.34 · good 4.25 · good 31.20 · out of range Fair
Fri 18:00 0.34 · good 4.46 · good 31.20 · out of range Fair
Fri 19:00 0.34 · good 4.46 · good 31.20 · out of range Fair