Can you snorkel in Dry Tortugas today?

Yes. The next good snorkeling window in Dry Tortugas starts Fri 22:00. Around 39% of the next 72 hours are suitable.

What is the best time of day to snorkel in Dry Tortugas?

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 Dry Tortugas 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.

Dry Tortugas Snorkel Report Today

USA · Updated Fri 03:24 (EDT) · Source: Snapshot

The skinny

Go in the best window Report Fri 00:47

Dry Tortugas has a usable snorkeling window around Fri 18:00. The main thing to watch is sea temperature.

Score: 5.5/10

Best time: Fri 18:00

Main risk: Sea Temperature

Best morning signal: Fri 08:00 (Fair).

Best afternoon signal: Fri 18:00 (Good). Peak afternoon wind is about 3.8 m/s.

Email me when it is good

Sunrise

06:56

Sunset

20:19

Water

30.6°C

Max air

29.5°C

Sky

Clear

1% cloud

Good window is available today

Next safe window: Fri 22:00 (39% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Friday

✅ good conditions

Main blocker: Waves

Saturday

✅ excellent conditions

Main blocker: Sea temperature

Sunday

✅ excellent conditions

Main blocker: Sea temperature

Best available hours

Next safe window starts at Fri 22:00.

Why this verdict

Main blockers across the next 72 hours:

Sea temperature (70 hours)
Tide/current (60 hours)
Darkness (31 hours)

Jellyfish drift risk

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

Low · 34/100

Low peak drift risk around Fri 09:00.

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: Fri 10:00

Fri 10:00, Sat 11:00

Nearby alternatives in USA

Looe Key

149 km away

✅ Good

Bahia Honda

161 km away

✅ Good

Key Largo

250 km away

✅ Good

Crystal River

476 km away

✅ Good

Advanced forecast data

Viewing historical data

Wed 04:00 – Sat 04:00 (EDT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.37 around Wed 15:00; 0 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.

13/24 sampled hours stay at or below 0.36m (range 0.28m to 0.46m).

Wind is at or below 5.4m/s in 4/24 sampled hours (range 3.3 to 19.9m/s).

Tides range from -0.39m to 0.02m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview

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 poor ❌ Limited

Wed 12:00 poor ❌ Limited

Wed 13:00 poor ❌ Limited

Wed 14:00 poor ❌ Limited

Wed 15:00 poor ❌ Limited

Wed 16:00 poor ❌ Limited

Wed 17:00 poor ❌ Limited

Wed 18:00 poor ❌ Limited

Wed 19:00 poor ❌ Limited

Wed 20:00 poor ❌ Limited

Wed 21:00 poor ❌ Limited

Wed 22:00 poor ❌ Limited

Wed 23:00 poor ❌ Limited

Thu 00:00 poor ❌ Limited

Thu 01:00 poor ❌ Limited

Thu 02:00 poor ❌ Limited

Thu 03:00 poor ❌ Limited

Thu 04:00 poor ❌ Limited

Thu 05:00 poor ❌ Limited

Thu 06:00 poor ❌ Limited

Thu 07:00 poor ❌ Limited

Thu 08:00 poor ❌ Limited

Thu 09:00 poor ❌ Limited

Thu 10:00 poor ❌ Limited

Thu 11:00 poor ❌ Limited

Thu 12:00 poor ❌ Limited

Thu 13:00 poor ❌ Limited

Thu 14:00 poor ❌ Limited

Thu 15:00 poor ❌ Limited

Thu 16:00 poor ❌ Limited

Thu 17:00 poor ❌ Limited

Thu 18:00 poor ❌ Limited

Thu 19:00 poor ❌ Limited

Thu 20:00 poor ❌ Limited

Thu 21:00 poor ❌ Limited

Thu 22:00 poor ❌ Limited

Thu 23:00 poor ❌ Limited

Fri 00:00 poor ❌ Limited

Fri 01:00 poor ❌ Limited

Fri 02:00 poor ❌ Limited

Fri 03:00 poor ❌ Limited

Fri 04:00 poor ❌ Limited

Fri 05:00 poor ❌ Limited

Fri 06:00 poor ❌ Limited

Fri 07:00 poor ❌ Limited

Fri 08:00 poor ❌ Limited

Fri 09:00 poor ❌ Limited

Fri 10:00 poor ❌ Limited

Fri 11:00 poor ❌ Limited

Fri 12:00 poor ❌ Limited

Fri 13:00 poor ❌ Limited

Fri 14:00 poor ❌ Limited

Fri 15:00 poor ❌ Limited

Fri 16:00 poor ❌ Limited

Fri 17:00 poor ❌ Limited

Fri 18:00 poor ❌ Limited

Fri 19:00 poor ❌ Limited

Fri 20:00 poor ❌ Limited

Fri 21:00 poor ❌ Limited

Fri 22:00 poor ❌ Limited

Fri 23:00 poor ❌ Limited

Sat 00:00 poor ❌ Limited

Sat 01:00 poor ❌ Limited

Sat 02:00 poor ❌ Limited

Sat 03:00 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
Wed 04:00	0.46 · high	15.90 · high	30.30 · good	poor
Wed 05:00	0.46 · high	17.30 · high	30.30 · good	poor
Wed 06:00	0.46 · high	18.00 · high	30.30 · good	poor
Wed 07:00	0.44 · high	19.50 · high	30.30 · good	poor
Wed 08:00	0.44 · high	19.90 · high	30.20 · good	poor
Wed 09:00	0.42 · high	18.30 · high	30.20 · good	poor
Wed 10:00	0.42 · high	16.50 · high	30.20 · good	poor
Wed 11:00	0.42 · high	14.90 · high	30.20 · good	poor
Wed 12:00	0.42 · high	13.30 · high	30.20 · good	poor
Wed 13:00	0.40 · high	14.00 · high	30.30 · good	poor
Wed 14:00	0.40 · high	5.80 · high	30.40 · good	poor
Wed 15:00	0.36 · good	6.40 · high	30.50 · out of range	poor
Wed 16:00	0.34 · good	7.60 · high	30.60 · out of range	poor
Wed 17:00	0.32 · good	4.70 · good	30.70 · out of range	poor
Wed 18:00	0.30 · good	3.90 · good	30.70 · out of range	poor
Wed 19:00	0.30 · good	3.30 · good	30.80 · out of range	poor
Wed 20:00	0.28 · good	4.40 · good	30.80 · out of range	poor
Wed 21:00	0.28 · good	6.50 · high	30.80 · out of range	poor
Wed 22:00	0.28 · good	7.50 · high	30.80 · out of range	poor
Wed 23:00	0.28 · good	8.30 · high	30.80 · out of range	poor
Thu 00:00	0.28 · good	10.20 · high	30.80 · out of range	poor
Thu 01:00	0.28 · good	8.80 · high	30.80 · out of range	poor
Thu 02:00	0.30 · good	9.70 · high	30.70 · out of range	poor
Thu 03:00	0.30 · good	12.50 · high	30.60 · out of range	poor
Thu 04:00	0.32 · good	12.60 · high	30.60 · out of range	poor
Thu 05:00	0.32 · good	10.40 · high	30.50 · out of range	poor
Thu 06:00	0.34 · good	13.90 · high	30.40 · good	poor
Thu 07:00	0.36 · good	12.60 · high	30.40 · good	poor
Thu 08:00	0.36 · good	12.00 · high	30.40 · good	poor
Thu 09:00	0.38 · high	9.40 · high	30.30 · good	poor
Thu 10:00	0.40 · high	12.90 · high	30.30 · good	poor
Thu 11:00	0.40 · high	20.40 · high	30.30 · good	poor
Thu 12:00	0.42 · high	19.90 · high	30.30 · good	poor
Thu 13:00	0.42 · high	18.90 · high	30.40 · good	poor
Thu 14:00	0.44 · high	16.60 · high	30.40 · good	poor
Thu 15:00	0.44 · high	14.10 · high	30.50 · out of range	poor
Thu 16:00	0.44 · high	13.80 · high	30.60 · out of range	poor
Thu 17:00	0.42 · high	15.50 · high	30.60 · out of range	poor
Thu 18:00	0.42 · high	15.80 · high	30.70 · out of range	poor
Thu 19:00	0.42 · high	11.40 · high	30.70 · out of range	poor
Thu 20:00	0.42 · high	16.00 · high	30.70 · out of range	poor
Thu 21:00	0.42 · high	3.20 · good	30.70 · out of range	poor
Thu 22:00	0.44 · high	10.60 · high	30.70 · out of range	poor
Thu 23:00	0.46 · high	14.30 · high	30.70 · out of range	poor
Fri 00:00	0.48 · high	14.90 · high	30.70 · out of range	poor
Fri 01:00	0.50 · high	17.70 · high	30.60 · out of range	poor
Fri 02:00	0.54 · high	16.30 · high	30.60 · out of range	poor
Fri 03:00	0.56 · high	19.70 · high	30.60 · out of range	poor
Fri 04:00	0.60 · high	21.50 · high	30.50 · out of range	poor
Fri 05:00	0.62 · high	23.40 · high	30.50 · out of range	poor
Fri 06:00	0.66 · high	25.00 · high	30.40 · good	poor
Fri 07:00	0.68 · high	24.60 · high	30.40 · good	poor
Fri 08:00	0.68 · high	25.30 · high	30.40 · good	poor
Fri 09:00	0.70 · high	26.40 · high	30.30 · good	poor
Fri 10:00	0.68 · high	25.30 · high	30.30 · good	poor
Fri 11:00	0.68 · high	24.60 · high	30.30 · good	poor
Fri 12:00	0.66 · high	23.70 · high	30.30 · good	poor
Fri 13:00	0.66 · high	23.60 · high	30.30 · good	poor
Fri 14:00	0.64 · high	23.60 · high	30.30 · good	poor
Fri 15:00	0.64 · high	22.50 · high	30.40 · good	poor
Fri 16:00	0.62 · high	21.70 · high	30.40 · good	poor
Fri 17:00	0.60 · high	19.70 · high	30.40 · good	poor
Fri 18:00	0.58 · high	19.80 · high	30.50 · out of range	poor
Fri 19:00	0.56 · high	19.80 · high	30.50 · out of range	poor
Fri 20:00	0.54 · high	19.90 · high	30.50 · out of range	poor
Fri 21:00	0.52 · high	20.90 · high	30.50 · out of range	poor
Fri 22:00	0.52 · high	20.30 · high	30.50 · out of range	poor
Fri 23:00	0.54 · high	20.10 · high	30.50 · out of range	poor
Sat 00:00	0.54 · high	19.10 · high	30.50 · out of range	poor
Sat 01:00	0.56 · high	21.60 · high	30.50 · out of range	poor
Sat 02:00	0.60 · high	23.50 · high	30.50 · out of range	poor
Sat 03:00	0.62 · high	24.40 · high	30.50 · out of range	poor