MARINE REPORT / 72 HOURS

Trunk Bay Snorkel Report Today

US Virgin Islands · Updated Sun 04:22 (AST) · Source: Snapshot

The skinny

Go in the best window Data updated Sun 04:22 (AST)

Trunk Bay has a usable snorkeling window around Sun 07:00. The main thing to watch is waves.

Right now (forecast)

Poor · 0.0/10

Sun 04:00 (AST)

Later today

Good · 6.2/10

Sun 14:00 (AST)

Next three days

Good · 6.3/10

Mon 16:00 (AST)

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

Score: 6.2/10

Best time: Sun 07:00

Main risk: Waves

Best morning signal: Sun 08:00 (Good).

Best afternoon signal: Sun 14:00 (Good). Peak afternoon wind is about 3.8 m/s.

Email me when it is good

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

Sunrise

06:13

Sunset

17:54

Water

29.5°C

Max air

28.9°C

Sky

Clear

30% cloud

Good model window in the next 72 hours

Next good model window: Sun 07:00–09:00 (37% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Sunday

✅ Good conditions

Main blocker: Waves

Monday

✅ Good conditions

Main blocker: Waves

Tuesday

✅ Good conditions

Main blocker: Waves

Best available hours

The next good model window starts at Sun 07:00 and lasts until 09:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (71 hours)
  • Tide/current (40 hours)
  • Darkness (38 hours)

Jellyfish drift risk

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

Low · 29/100

Low peak drift risk around Sun 08:00.

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: Tue 03:00

Sun 15:00, Mon 16:00, Tue 03:00

Nearby alternatives in US Virgin Islands

Buck Island

65 km away

✅ Good

Advanced forecast data

Viewing historical data

Sat 04:00 – Tue 04:00 (AST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.52 around Sat 12:00; 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 0.54m to 0.72m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 2.77 to 4.72m/s).

Tides range from 0.2m to 0.49m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
Poor ❌ Limited
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
Good 🌟 Good
Fair ⚠️ Fair
Good 🌟 Good
Good 🌟 Good
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
Poor ❌ Limited
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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 is better in daylight, so night hours score lower.
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Sat 04:00 0.72 · high 3.90 · good 29.40 · good Poor
Sat 05:00 0.70 · high 3.46 · good 29.40 · good Poor
Sat 06:00 0.68 · high 3.71 · good 29.40 · good Poor
Sat 07:00 0.68 · high 4.72 · good 29.40 · good Fair
Sat 08:00 0.68 · high 3.42 · good 29.30 · good Fair
Sat 09:00 0.68 · high 4.03 · good 29.40 · good Fair
Sat 10:00 0.68 · high 4.40 · good 29.50 · good Fair
Sat 11:00 0.68 · high 4.30 · good 29.60 · good Fair
Sat 12:00 0.68 · high 3.80 · good 29.70 · good Fair
Sat 13:00 0.66 · high 3.58 · good 29.80 · good Fair
Sat 14:00 0.62 · high 3.33 · good 29.80 · good Fair
Sat 15:00 0.60 · high 2.92 · good 29.80 · good Fair
Sat 16:00 0.60 · high 2.77 · good 29.80 · good Fair
Sat 17:00 0.58 · high 2.93 · good 29.80 · good Fair
Sat 18:00 0.58 · high 3.20 · good 29.80 · good Fair
Sat 19:00 0.56 · high 3.39 · good 29.70 · good Poor
Sat 20:00 0.56 · high 3.72 · good 29.70 · good Poor
Sat 21:00 0.56 · high 3.93 · good 29.60 · good Poor
Sat 22:00 0.56 · high 4.13 · good 29.60 · good Poor
Sat 23:00 0.56 · high 4.05 · good 29.50 · good Poor
Sun 00:00 0.56 · high 3.91 · good 29.50 · good Poor
Sun 01:00 0.56 · high 3.89 · good 29.50 · good Poor
Sun 02:00 0.56 · high 4.02 · good 29.40 · good Poor
Sun 03:00 0.54 · high 4.29 · good 29.40 · good Poor
Sun 04:00 0.54 · high 3.94 · good 29.40 · good Poor
Sun 05:00 0.52 · high 4.22 · good 29.30 · good Poor
Sun 06:00 0.52 · high 4.61 · good 29.30 · good Poor
Sun 07:00 0.52 · high 4.35 · good 29.20 · good Fair
Sun 08:00 0.52 · high 3.97 · good 29.30 · good Fair
Sun 09:00 0.52 · high 3.67 · good 29.30 · good Fair
Sun 10:00 0.50 · high 3.80 · good 29.40 · good Fair
Sun 11:00 0.48 · high 4.23 · good 29.60 · good Fair
Sun 12:00 0.48 · high 4.23 · good 29.70 · good Good
Sun 13:00 0.48 · high 4.24 · good 29.80 · good Fair
Sun 14:00 0.48 · high 3.98 · good 29.80 · good Good
Sun 15:00 0.48 · high 3.08 · good 29.80 · good Good
Sun 16:00 0.46 · high 3.60 · good 29.80 · good Fair
Sun 17:00 0.46 · high 3.25 · good 29.70 · good Fair
Sun 18:00 0.46 · high 3.23 · good 29.60 · good Fair
Sun 19:00 0.44 · high 3.36 · good 29.60 · good Poor
Sun 20:00 0.44 · high 3.11 · good 29.50 · good Poor
Sun 21:00 0.44 · high 3.32 · good 29.50 · good Poor
Sun 22:00 0.42 · high 3.53 · good 29.40 · good Poor
Sun 23:00 0.42 · high 3.38 · good 29.40 · good Poor
Mon 00:00 0.42 · high 3.50 · good 29.40 · good Poor
Mon 01:00 0.42 · high 3.63 · good 29.30 · good Poor
Mon 02:00 0.42 · high 3.65 · good 29.30 · good Poor
Mon 03:00 0.42 · high 3.81 · good 29.30 · good Poor
Mon 04:00 0.42 · high 3.70 · good 29.30 · good Poor
Mon 05:00 0.42 · high 3.91 · good 29.30 · good Poor
Mon 06:00 0.42 · high 4.09 · good 29.20 · good Poor
Mon 07:00 0.46 · high 4.47 · good 29.40 · good Good
Mon 08:00 0.46 · high 3.79 · good 29.40 · good Good
Mon 09:00 0.46 · high 3.70 · good 29.40 · good Good
Mon 10:00 0.46 · high 3.80 · good 29.50 · good Good
Mon 11:00 0.46 · high 4.07 · good 29.60 · good Good
Mon 12:00 0.46 · high 4.10 · good 29.70 · good Good
Mon 13:00 0.46 · high 3.97 · good 29.80 · good Good
Mon 14:00 0.46 · high 3.73 · good 29.80 · good Good
Mon 15:00 0.46 · high 3.71 · good 29.80 · good Good
Mon 16:00 0.44 · high 3.46 · good 29.80 · good Good
Mon 17:00 0.44 · high 3.48 · good 29.80 · good Good
Mon 18:00 0.44 · high 3.66 · good 29.70 · good Good
Mon 19:00 0.44 · high 3.65 · good 29.70 · good Poor
Mon 20:00 0.44 · high 3.91 · good 29.60 · good Poor
Mon 21:00 0.44 · high 4.16 · good 29.60 · good Poor
Mon 22:00 0.44 · high 4.25 · good 29.60 · good Poor
Mon 23:00 0.44 · high 4.15 · good 29.50 · good Poor
Tue 00:00 0.44 · high 4.55 · good 29.50 · good Poor
Tue 01:00 0.44 · high 4.74 · good 29.50 · good Poor
Tue 02:00 0.44 · high 4.55 · good 29.50 · good Poor
Tue 03:00 0.44 · high 4.17 · good 29.50 · good Poor