MARINE REPORT / 72 HOURS

Trunk Bay Snorkel Report Today

US Virgin Islands · Updated Sat 02:42 (AST) · Source: Snapshot

The skinny

Marginal Data updated Sat 02:42 (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 05:00 (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

65% 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 (55 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 07:00.

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

Thu 05:00 – Sun 05:00 (AST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.39 around Thu 07:00; 5 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 0.82m to 1.04m).

Wind is at or below 5.4m/s in 2/24 sampled hours (range 4.95 to 7.62m/s).

Tides range from 0.31m to 0.49m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Poor ❌ Limited
Fair ⚠️ Fair
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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
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
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Fair ⚠️ Fair
Poor ❌ Limited
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
Thu 05:00 0.82 · high 6.36 · high 29.60 · good Poor
Thu 06:00 0.82 · high 6.65 · high 29.60 · good Poor
Thu 07:00 0.86 · high 5.76 · high 29.50 · good Fair
Thu 08:00 0.86 · high 6.46 · high 29.50 · good Poor
Thu 09:00 0.86 · high 6.53 · high 29.50 · good Poor
Thu 10:00 0.84 · high 6.91 · high 29.50 · good Poor
Thu 11:00 0.86 · high 4.95 · good 29.60 · good Fair
Thu 12:00 0.86 · high 6.02 · high 29.70 · good Poor
Thu 13:00 0.86 · high 5.20 · good 29.70 · good Fair
Thu 14:00 0.86 · high 5.84 · high 29.70 · good Poor
Thu 15:00 0.86 · high 6.42 · high 29.70 · good Poor
Thu 16:00 0.86 · high 6.36 · high 29.70 · good Poor
Thu 17:00 0.86 · high 5.63 · high 29.70 · good Fair
Thu 18:00 0.86 · high 6.03 · high 29.70 · good Fair
Thu 19:00 0.88 · high 6.14 · high 29.60 · good Poor
Thu 20:00 0.88 · high 6.33 · high 29.60 · good Poor
Thu 21:00 0.90 · high 6.66 · high 29.60 · good Poor
Thu 22:00 0.92 · high 7.05 · high 29.60 · good Poor
Thu 23:00 0.94 · high 7.17 · high 29.60 · good Poor
Fri 00:00 0.96 · high 7.43 · high 29.60 · good Poor
Fri 01:00 1.00 · high 7.62 · high 29.50 · good Poor
Fri 02:00 1.02 · high 7.18 · high 29.50 · good Poor
Fri 03:00 1.02 · high 7.03 · high 29.50 · good Poor
Fri 04:00 1.04 · high 6.89 · high 29.50 · good Poor
Fri 05:00 1.04 · high 6.93 · high 29.50 · good Poor
Fri 06:00 1.02 · high 7.19 · high 29.50 · good Poor
Fri 07:00 1.00 · high 7.48 · high 29.50 · good Poor
Fri 08:00 1.02 · high 7.36 · high 29.50 · good Fair
Fri 09:00 1.02 · high 7.35 · high 29.50 · good Fair
Fri 10:00 1.02 · high 7.15 · high 29.50 · good Poor
Fri 11:00 1.02 · high 6.76 · high 29.60 · good Fair
Fri 12:00 1.00 · high 6.40 · high 29.60 · good Fair
Fri 13:00 0.98 · high 6.36 · high 29.70 · good Fair
Fri 14:00 0.98 · high 6.03 · high 29.70 · good Fair
Fri 15:00 0.98 · high 7.31 · high 29.70 · good Poor
Fri 16:00 0.96 · high 6.35 · high 29.70 · good Fair
Fri 17:00 0.96 · high 6.65 · high 29.60 · good Fair
Fri 18:00 0.98 · high 7.39 · high 29.60 · good Poor
Fri 19:00 1.00 · high 7.30 · high 29.60 · good Poor
Fri 20:00 1.02 · high 7.64 · high 29.60 · good Poor
Fri 21:00 1.02 · high 7.54 · high 29.60 · good Poor
Fri 22:00 1.04 · high 7.59 · high 29.60 · good Poor
Fri 23:00 1.04 · high 7.44 · high 29.50 · good Poor
Sat 00:00 1.02 · high 6.58 · high 29.50 · good Poor
Sat 01:00 1.00 · high 7.12 · high 29.50 · good Poor
Sat 02:00 0.98 · high 6.07 · high 29.50 · good Poor
Sat 03:00 0.96 · high 5.95 · high 29.50 · good Poor
Sat 04:00 0.94 · high 6.24 · high 29.50 · good Poor
Sat 05:00 0.92 · high 7.31 · high 29.50 · good Poor
Sat 06:00 0.90 · high 5.85 · high 29.50 · good Poor
Sat 07:00 0.96 · high 5.72 · high 29.50 · good Poor
Sat 08:00 0.94 · high 3.49 · good 29.50 · good Fair
Sat 09:00 0.92 · high 3.72 · good 29.50 · good Fair
Sat 10:00 0.92 · high 5.39 · good 29.60 · good Poor
Sat 11:00 0.90 · high 4.73 · good 29.60 · good Fair
Sat 12:00 0.88 · high 5.48 · high 29.70 · good Fair
Sat 13:00 0.86 · high 3.47 · good 29.70 · good Fair
Sat 14:00 0.84 · high 4.19 · good 29.80 · good Fair
Sat 15:00 0.84 · high 4.45 · good 29.80 · good Fair
Sat 16:00 0.82 · high 5.55 · high 29.80 · good Fair
Sat 17:00 0.82 · high 5.69 · high 29.70 · good Poor
Sat 18:00 0.84 · high 6.65 · high 29.70 · good Fair
Sat 19:00 0.86 · high 7.02 · high 29.70 · good Poor
Sat 20:00 0.88 · high 7.20 · high 29.60 · good Poor
Sat 21:00 0.94 · high 6.79 · high 29.60 · good Poor
Sat 22:00 0.98 · high 6.46 · high 29.60 · good Poor
Sat 23:00 1.04 · high 6.63 · high 29.60 · good Poor
Sun 00:00 1.06 · high 7.45 · high 29.60 · good Poor
Sun 01:00 1.08 · high 7.95 · high 29.50 · good Poor
Sun 02:00 1.10 · high 7.20 · high 29.50 · good Poor
Sun 03:00 1.08 · high 7.36 · high 29.50 · good Poor
Sun 04:00 1.06 · high 8.20 · high 29.50 · good Poor