MARINE REPORT / 72 HOURS

Trunk Bay Snorkel Report Today

US Virgin Islands · Updated Fri 23:35 (AST) · Source: Snapshot

The skinny

Marginal Data updated Fri 23:35 (AST)

Trunk Bay looks marginal today. The least-bad daylight window is around Sat 16:00, but waves is limiting the forecast.

Right now (forecast)

Poor · 0.0/10

Sat 02:00 (AST)

Later today

Fair · 4.7/10

Sat 16:00 (AST)

Next three days

Good · 6.0/10

Mon 16:00 (AST)

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

Score: 4.7/10

Best time: Sat 16:00

Main risk: Waves

Best morning signal: Sat 11:00 (Fair).

Best afternoon signal: Sat 16:00 (Fair). Peak afternoon wind is about 4.8 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

17:55

Water

29.5°C

Max air

28.9°C

Sky

Partly cloudy

70% cloud

Good model window in the next 72 hours

Next good model window: Sun 07:00–10:00 (24% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Saturday

⚠️ Fair conditions

Main blocker: Waves

Sunday

✅ Good conditions

Main blocker: Waves

Monday

✅ Good conditions

Main blocker: Waves

Best available hours

The next good model window starts at Sun 07:00 and lasts until 10:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (68 hours)
  • Tide/current (58 hours)
  • Darkness (35 hours)

Jellyfish drift risk

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

Low · 34/100

Low peak drift risk around Sat 05:00.

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

Mon 16:00

Nearby alternatives in US Virgin Islands

Buck Island

65 km away

✅ Good

Advanced forecast data

Viewing historical data

Mon 02:00 – Thu 02:00 (AST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.41 around Mon 09:00; 9 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 0.84m to 1.02m).

Wind is at or below 5.4m/s in 13/24 sampled hours (range 4.7 to 7.45m/s).

Tides range from 0.26m to 0.53m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
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
Mon 02:00 1.02 · high 5.59 · high 29.50 · good Poor
Mon 03:00 1.02 · high 4.90 · good 29.50 · good Poor
Mon 04:00 1.02 · high 4.70 · good 29.40 · good Poor
Mon 05:00 1.02 · high 4.91 · good 29.40 · good Poor
Mon 06:00 1.00 · high 5.52 · high 29.40 · good Poor
Mon 07:00 0.84 · high 6.88 · high 29.40 · good Fair
Mon 08:00 0.84 · high 6.94 · high 29.40 · good Fair
Mon 09:00 0.86 · high 7.45 · high 29.40 · good Fair
Mon 10:00 0.86 · high 6.60 · high 29.40 · good Fair
Mon 11:00 0.88 · high 6.18 · high 29.50 · good Fair
Mon 12:00 0.88 · high 6.02 · high 29.50 · good Fair
Mon 13:00 0.96 · high 5.88 · high 29.60 · good Poor
Mon 14:00 0.96 · high 5.25 · good 29.60 · good Poor
Mon 15:00 0.94 · high 5.20 · good 29.60 · good Fair
Mon 16:00 0.94 · high 5.25 · good 29.50 · good Fair
Mon 17:00 0.92 · high 5.35 · good 29.50 · good Fair
Mon 18:00 0.92 · high 5.21 · good 29.50 · good Poor
Mon 19:00 0.90 · high 5.14 · good 29.40 · good Poor
Mon 20:00 0.90 · high 5.46 · high 29.40 · good Poor
Mon 21:00 0.90 · high 5.16 · good 29.40 · good Poor
Mon 22:00 0.88 · high 5.27 · good 29.40 · good Poor
Mon 23:00 0.88 · high 5.28 · good 29.40 · good Poor
Tue 00:00 0.88 · high 5.32 · good 29.40 · good Poor
Tue 01:00 0.88 · high 5.63 · high 29.40 · good Poor
Tue 02:00 0.88 · high 6.20 · high 29.40 · good Poor
Tue 03:00 0.86 · high 5.85 · high 29.40 · good Poor
Tue 04:00 0.86 · high 7.14 · high 29.40 · good Poor
Tue 05:00 0.84 · high 3.74 · good 29.40 · good Poor
Tue 06:00 0.84 · high 3.83 · good 29.30 · good Poor
Tue 07:00 0.76 · high 5.18 · good 29.40 · good Poor
Tue 08:00 0.78 · high 7.74 · high 29.40 · good Poor
Tue 09:00 0.80 · high 7.70 · high 29.40 · good Poor
Tue 10:00 0.84 · high 7.57 · high 29.50 · good Poor
Tue 11:00 0.86 · high 6.72 · high 29.50 · good Poor
Tue 12:00 0.86 · high 6.46 · high 29.60 · good Poor
Tue 13:00 0.72 · high 4.27 · good 29.70 · good Fair
Tue 14:00 0.72 · high 4.35 · good 29.70 · good Fair
Tue 15:00 0.72 · high 4.41 · good 29.70 · good Fair
Tue 16:00 0.72 · high 5.32 · good 29.60 · good Poor
Tue 17:00 0.72 · high 5.53 · high 29.60 · good Poor
Tue 18:00 0.72 · high 5.87 · high 29.50 · good Poor
Tue 19:00 0.72 · high 5.98 · high 29.50 · good Poor
Tue 20:00 0.72 · high 4.21 · good 29.40 · good Poor
Tue 21:00 0.74 · high 4.62 · good 29.40 · good Poor
Tue 22:00 0.74 · high 4.56 · good 29.40 · good Poor
Tue 23:00 0.76 · high 4.50 · good 29.40 · good Poor
Wed 00:00 0.76 · high 4.95 · good 29.40 · good Poor
Wed 01:00 0.76 · high 4.80 · good 29.40 · good Poor
Wed 02:00 0.76 · high 3.65 · good 29.40 · good Poor
Wed 03:00 0.74 · high 7.21 · high 29.40 · good Poor
Wed 04:00 0.72 · high 6.63 · high 29.40 · good Poor
Wed 05:00 0.70 · high 6.05 · high 29.40 · good Poor
Wed 06:00 0.70 · high 6.53 · high 29.40 · good Poor
Wed 07:00 0.70 · high 6.02 · high 29.40 · good Poor
Wed 08:00 0.82 · high 5.97 · high 29.40 · good Fair
Wed 09:00 0.82 · high 6.36 · high 29.50 · good Poor
Wed 10:00 0.80 · high 6.82 · high 29.50 · good Poor
Wed 11:00 0.80 · high 6.97 · high 29.50 · good Poor
Wed 12:00 0.78 · high 6.75 · high 29.60 · good Poor
Wed 13:00 0.78 · high 6.35 · high 29.60 · good Poor
Wed 14:00 0.76 · high 5.60 · high 29.60 · good Poor
Wed 15:00 0.74 · high 5.27 · good 29.60 · good Fair
Wed 16:00 0.74 · high 2.69 · good 29.60 · good Fair
Wed 17:00 0.72 · high 3.92 · good 29.60 · good Poor
Wed 18:00 0.70 · high 5.11 · good 29.60 · good Poor
Wed 19:00 0.70 · high 5.03 · good 29.50 · good Poor
Wed 20:00 0.76 · high 6.12 · high 29.50 · good Poor
Wed 21:00 0.76 · high 1.21 · good 29.50 · good Poor
Wed 22:00 0.74 · high 4.56 · good 29.50 · good Poor
Wed 23:00 0.74 · high 5.90 · high 29.50 · good Poor
Thu 00:00 0.74 · high 5.09 · good 29.50 · good Poor
Thu 01:00 0.74 · high 6.05 · high 29.50 · good Poor