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

Snorkel in daylight, if possible in the morning before the wind picks up. Currents are often weaker near high slack tide. SnorkelForecast scores each daylight hour for Dry Tortugas.

What is the best tide for snorkeling?

High slack tide, within about an hour of the high-tide peak, often has weaker currents. Strong low tides and tidal flow near channels or headlands reduce the score.

Dry Tortugas Snorkel Report Today

USA · Updated Mon 12:52 (EDT) · Source: Snapshot

The skinny

Go in the best window Data updated Mon 12:52 (EDT)

Dry Tortugas has a usable snorkeling window around Mon 19:00. The main thing to watch is sea temperature.

Right now (forecast)

Good · 6.9/10

Mon 18:00 (EDT)

Later today

Good · 5.7/10

Mon 19:00 (EDT)

Next three days

Good · 6.5/10

Tue 11:00 (EDT)

Model estimates using Open-Meteo; not observations or safety guarantees. Check official advisories and conditions at the beach.

Score: 5.7/10

Best time: Mon 19:00

Main risk: Sea Temperature

No useful morning window is showing yet.

Best afternoon signal: Mon 19:00 (Good). Peak afternoon wind is about 2.5 m/s.

Email me when it is good

Also see the best places to snorkel in Florida, ranked on our stored historical scores.

Sunrise

07:19

Sunset

19:28

Water

31.0°C

Max air

28.4°C

Sky

Cloudy

100% cloud

Good model window in the next 72 hours

Next good model window: Mon 19:00 (23% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Monday

✅ Good conditions

Main blocker: Sea temperature

Tuesday

✅ Good conditions

Main blocker: Sea temperature

Wednesday

✅ Good conditions

Main blocker: Sea temperature

Best available hours

The next good model window starts at Mon 19:00.

Why this verdict

Main blockers across the next 72 hours:

Sea temperature (65 hours)
Tide/current (45 hours)
Darkness (36 hours)

Jellyfish drift risk

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

Low · 34/100

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: Tue 07:00

Tue 07:00, Tue 21:00, Wed 21:00

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

Fri 18:00 – Mon 18:00 (EDT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.69 around Fri 18:00; 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 0.14m to 0.24m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 1.7 to 3.68m/s).

Tides range from -0.44m to 0.15m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview

Fri 18:00 Good 🌟 Good

Fri 19:00 Good 🌟 Good

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

Sat 04:00 Poor ❌ Limited

Sat 05:00 Poor ❌ Limited

Sat 06:00 Poor ❌ Limited

Sat 07:00 Poor ❌ Limited

Sat 08:00 Good 🌟 Good

Sat 09:00 Good 🌟 Good

Sat 10:00 Good 🌟 Good

Sat 11:00 Good 🌟 Good

Sat 12:00 Good 🌟 Good

Sat 13:00 Good 🌟 Good

Sat 14:00 Good 🌟 Good

Sat 15:00 Good 🌟 Good

Sat 16:00 Good 🌟 Good

Sat 17:00 Good 🌟 Good

Sat 18:00 Good 🌟 Good

Sat 19:00 Good 🌟 Good

Sat 20:00 Poor ❌ Limited

Sat 21:00 Poor ❌ Limited

Sat 22:00 Poor ❌ Limited

Sat 23:00 Poor ❌ Limited

Sun 00:00 Poor ❌ Limited

Sun 01:00 Poor ❌ Limited

Sun 02:00 Poor ❌ Limited

Sun 03:00 Poor ❌ Limited

Sun 04:00 Poor ❌ Limited

Sun 05:00 Poor ❌ Limited

Sun 06:00 Poor ❌ Limited

Sun 07:00 Poor ❌ Limited

Sun 08:00 Good 🌟 Good

Sun 09:00 Good 🌟 Good

Sun 10:00 Good 🌟 Good

Sun 11:00 Good 🌟 Good

Sun 12:00 Good 🌟 Good

Sun 13:00 Good 🌟 Good

Sun 14:00 Good 🌟 Good

Sun 15:00 Excellent ✅ Excellent

Sun 16:00 Excellent ✅ Excellent

Sun 17:00 Excellent ✅ Excellent

Sun 18:00 Good 🌟 Good

Sun 19:00 Good 🌟 Good

Sun 20:00 Poor ❌ Limited

Sun 21:00 Poor ❌ Limited

Sun 22:00 Poor ❌ Limited

Sun 23:00 Poor ❌ Limited

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 Excellent ✅ Excellent

Mon 09:00 Excellent ✅ Excellent

Mon 10:00 Excellent ✅ Excellent

Mon 11:00 Excellent ✅ Excellent

Mon 12:00 Excellent ✅ Excellent

Mon 13:00 Good 🌟 Good

Mon 14:00 Good 🌟 Good

Mon 15:00 Excellent ✅ Excellent

Mon 16:00 Excellent ✅ Excellent

Mon 17:00 Excellent ✅ Excellent

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
Fri 18:00	0.24 · good	1.70 · good	31.80 · out of range	Good
Fri 19:00	0.24 · good	2.05 · good	31.80 · out of range	Good
Fri 20:00	0.22 · good	2.34 · good	31.80 · out of range	Poor
Fri 21:00	0.22 · good	2.13 · good	31.80 · out of range	Poor
Fri 22:00	0.20 · good	2.14 · good	31.70 · out of range	Poor
Fri 23:00	0.20 · good	2.50 · good	31.70 · out of range	Poor
Sat 00:00	0.20 · good	2.73 · good	31.70 · out of range	Poor
Sat 01:00	0.20 · good	3.34 · good	31.60 · out of range	Poor
Sat 02:00	0.20 · good	3.22 · good	31.60 · out of range	Poor
Sat 03:00	0.20 · good	2.63 · good	31.60 · out of range	Poor
Sat 04:00	0.22 · good	2.38 · good	31.60 · out of range	Poor
Sat 05:00	0.22 · good	2.51 · good	31.60 · out of range	Poor
Sat 06:00	0.24 · good	2.86 · good	31.60 · out of range	Poor
Sat 07:00	0.14 · good	3.68 · good	31.60 · out of range	Poor
Sat 08:00	0.14 · good	3.26 · good	31.60 · out of range	Good
Sat 09:00	0.14 · good	2.60 · good	31.60 · out of range	Good
Sat 10:00	0.14 · good	2.40 · good	31.60 · out of range	Good
Sat 11:00	0.14 · good	2.24 · good	31.70 · out of range	Good
Sat 12:00	0.14 · good	2.18 · good	31.70 · out of range	Good
Sat 13:00	0.16 · good	2.61 · good	31.70 · out of range	Good
Sat 14:00	0.16 · good	2.02 · good	31.70 · out of range	Good
Sat 15:00	0.16 · good	2.14 · good	31.70 · out of range	Good
Sat 16:00	0.20 · good	2.96 · good	31.70 · out of range	Good
Sat 17:00	0.20 · good	2.84 · good	31.70 · out of range	Good
Sat 18:00	0.20 · good	2.72 · good	31.70 · out of range	Good
Sat 19:00	0.18 · good	3.01 · good	31.70 · out of range	Good
Sat 20:00	0.18 · good	3.32 · good	31.70 · out of range	Poor
Sat 21:00	0.18 · good	3.23 · good	31.70 · out of range	Poor
Sat 22:00	0.18 · good	3.51 · good	31.70 · out of range	Poor
Sat 23:00	0.18 · good	3.71 · good	31.70 · out of range	Poor
Sun 00:00	0.16 · good	2.62 · good	31.70 · out of range	Poor
Sun 01:00	0.16 · good	2.47 · good	31.60 · out of range	Poor
Sun 02:00	0.14 · good	2.22 · good	31.60 · out of range	Poor
Sun 03:00	0.14 · good	2.33 · good	31.60 · out of range	Poor
Sun 04:00	0.14 · good	2.63 · good	31.60 · out of range	Poor
Sun 05:00	0.14 · good	2.35 · good	31.60 · out of range	Poor
Sun 06:00	0.14 · good	2.25 · good	31.50 · out of range	Poor
Sun 07:00	0.16 · good	2.48 · good	31.70 · out of range	Poor
Sun 08:00	0.16 · good	2.48 · good	31.70 · out of range	Good
Sun 09:00	0.16 · good	2.16 · good	31.70 · out of range	Good
Sun 10:00	0.16 · good	1.91 · good	31.80 · out of range	Good
Sun 11:00	0.16 · good	1.80 · good	31.80 · out of range	Good
Sun 12:00	0.16 · good	1.39 · good	31.90 · out of range	Good
Sun 13:00	0.16 · good	1.86 · good	32.00 · out of range	Good
Sun 14:00	0.16 · good	1.28 · good	32.00 · out of range	Good
Sun 15:00	0.16 · good	0.72 · good	32.10 · out of range	Excellent
Sun 16:00	0.14 · good	0.91 · good	32.10 · out of range	Excellent
Sun 17:00	0.14 · good	1.36 · good	32.10 · out of range	Excellent
Sun 18:00	0.14 · good	2.20 · good	32.10 · out of range	Good
Sun 19:00	0.14 · good	2.42 · good	32.10 · out of range	Good
Sun 20:00	0.14 · good	2.77 · good	32.10 · out of range	Poor
Sun 21:00	0.14 · good	3.01 · good	32.00 · out of range	Poor
Sun 22:00	0.12 · good	3.21 · good	32.00 · out of range	Poor
Sun 23:00	0.12 · good	3.62 · good	32.00 · out of range	Poor
Mon 00:00	0.12 · good	4.28 · good	31.90 · out of range	Poor
Mon 01:00	0.12 · good	3.18 · good	31.90 · out of range	Poor
Mon 02:00	0.12 · good	3.61 · good	31.80 · out of range	Poor
Mon 03:00	0.12 · good	3.66 · good	31.80 · out of range	Poor
Mon 04:00	0.12 · good	2.66 · good	31.80 · out of range	Poor
Mon 05:00	0.12 · good	2.19 · good	31.70 · out of range	Poor
Mon 06:00	0.12 · good	1.89 · good	31.70 · out of range	Poor
Mon 07:00	0.12 · good	1.33 · good	31.70 · out of range	Poor
Mon 08:00	0.12 · good	1.46 · good	31.70 · out of range	Excellent
Mon 09:00	0.12 · good	1.89 · good	31.80 · out of range	Excellent
Mon 10:00	0.12 · good	2.34 · good	31.80 · out of range	Excellent
Mon 11:00	0.12 · good	1.86 · good	31.90 · out of range	Excellent
Mon 12:00	0.12 · good	1.00 · good	32.00 · out of range	Excellent
Mon 13:00	0.12 · good	2.10 · good	32.10 · out of range	Good
Mon 14:00	0.12 · good	1.90 · good	32.10 · out of range	Good
Mon 15:00	0.12 · good	1.77 · good	32.20 · out of range	Excellent
Mon 16:00	0.12 · good	2.12 · good	32.20 · out of range	Excellent
Mon 17:00	0.12 · good	1.40 · good	32.20 · out of range	Excellent