MARINE REPORT / 72 HOURS

Trunk Bay Snorkel Report Today

US Virgin Islands · Updated Sat 12:47 (AST) · Source: Snapshot

The skinny

Marginal Data updated Sat 12:47 (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)

Fair · 4.5/10

Sat 15:00 (AST)

Later today

Fair · 4.6/10

Sat 16:00 (AST)

Next three days

Good · 6.3/10

Sun 14:00 (AST)

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

Score: 4.6/10

Best time: Sat 16:00

Main risk: Waves

No useful morning window is showing yet.

Best afternoon signal: Sat 16:00 (Fair). Peak afternoon wind is about 4.7 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

29.8°C

Max air

28.9°C

Sky

Clear

10% cloud

Good model window in the next 72 hours

Next good model window: Sun 08:00–17:00 (26% 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 08:00 and lasts until 17:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (68 hours)
  • Tide/current (46 hours)
  • Darkness (39 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 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

Thu 15:00 – Sun 15:00 (AST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.41 around Thu 17:00; 8 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 0.9m to 1.12m).

Wind is at or below 5.4m/s in 2/24 sampled hours (range 5.01 to 8.46m/s).

Tides range from 0.16m to 0.55m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
Poor ❌ Limited
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
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
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
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 15:00 1.12 · high 6.60 · high 29.70 · good Fair
Thu 16:00 1.08 · high 5.64 · high 29.70 · good Fair
Thu 17:00 1.06 · high 5.01 · good 29.70 · good Fair
Thu 18:00 1.04 · high 5.17 · good 29.60 · good Fair
Thu 19:00 1.04 · high 5.60 · high 29.60 · good Poor
Thu 20:00 1.02 · high 6.71 · high 29.60 · good Poor
Thu 21:00 1.02 · high 7.74 · high 29.60 · good Poor
Thu 22:00 1.02 · high 8.46 · high 29.60 · good Poor
Thu 23:00 1.02 · high 7.37 · high 29.60 · good Poor
Fri 00:00 1.02 · high 7.35 · high 29.60 · good Poor
Fri 01:00 1.04 · high 7.00 · high 29.60 · good Poor
Fri 02:00 1.04 · high 7.16 · high 29.60 · good Poor
Fri 03:00 1.04 · high 7.16 · high 29.60 · good Poor
Fri 04:00 1.04 · high 6.86 · high 29.50 · good Poor
Fri 05:00 1.04 · high 6.42 · high 29.50 · good Poor
Fri 06:00 1.02 · high 5.98 · high 29.50 · good Poor
Fri 07:00 0.98 · high 6.00 · high 29.50 · good Fair
Fri 08:00 0.98 · high 6.49 · high 29.50 · good Fair
Fri 09:00 0.98 · high 6.27 · high 29.60 · good Fair
Fri 10:00 0.96 · high 6.47 · high 29.60 · good Poor
Fri 11:00 0.96 · high 5.96 · high 29.70 · good Fair
Fri 12:00 0.94 · high 6.06 · high 29.70 · good Poor
Fri 13:00 0.94 · high 5.75 · high 29.80 · good Poor
Fri 14:00 0.90 · high 5.93 · high 29.80 · good Poor
Fri 15:00 0.90 · high 5.68 · high 29.80 · good Poor
Fri 16:00 0.88 · high 5.86 · high 29.80 · good Poor
Fri 17:00 0.88 · high 5.59 · high 29.70 · good Poor
Fri 18:00 0.86 · high 5.33 · good 29.70 · good Poor
Fri 19:00 0.86 · high 5.28 · good 29.70 · good Poor
Fri 20:00 0.84 · high 5.15 · good 29.70 · good Poor
Fri 21:00 0.82 · high 5.75 · high 29.70 · good Poor
Fri 22:00 0.82 · high 5.82 · high 29.70 · good Poor
Fri 23:00 0.80 · high 5.81 · high 29.60 · good Poor
Sat 00:00 0.80 · high 5.66 · high 29.60 · good Poor
Sat 01:00 0.82 · high 7.33 · high 29.60 · good Poor
Sat 02:00 0.82 · high 7.68 · high 29.60 · good Poor
Sat 03:00 0.82 · high 6.02 · high 29.60 · good Poor
Sat 04:00 0.80 · high 5.61 · high 29.60 · good Poor
Sat 05:00 0.80 · high 5.55 · high 29.60 · good Poor
Sat 06:00 0.84 · high 5.43 · high 29.60 · good Poor
Sat 07:00 0.88 · high 6.18 · high 29.60 · good Fair
Sat 08:00 0.88 · high 6.11 · high 29.60 · good Fair
Sat 09:00 0.88 · high 5.99 · high 29.60 · good Fair
Sat 10:00 0.90 · high 5.52 · high 29.60 · good Fair
Sat 11:00 0.90 · high 5.75 · high 29.70 · good Fair
Sat 12:00 0.90 · high 6.00 · high 29.70 · good Fair
Sat 13:00 0.88 · high 5.83 · high 29.70 · good Fair
Sat 14:00 0.88 · high 6.06 · high 29.70 · good Fair
Sat 15:00 0.88 · high 5.76 · high 29.70 · good Fair
Sat 16:00 0.86 · high 5.55 · high 29.70 · good Fair
Sat 17:00 0.86 · high 4.95 · good 29.70 · good Fair
Sat 18:00 0.86 · high 4.84 · good 29.70 · good Fair
Sat 19:00 0.84 · high 5.35 · good 29.70 · good Poor
Sat 20:00 0.84 · high 6.28 · high 29.70 · good Poor
Sat 21:00 0.84 · high 6.89 · high 29.70 · good Poor
Sat 22:00 0.82 · high 5.32 · good 29.60 · good Poor
Sat 23:00 0.82 · high 5.22 · good 29.60 · good Poor
Sun 00:00 0.82 · high 5.40 · good 29.60 · good Poor
Sun 01:00 0.80 · high 6.51 · high 29.60 · good Poor
Sun 02:00 0.80 · high 5.73 · high 29.60 · good Poor
Sun 03:00 0.80 · high 5.21 · good 29.60 · good Poor
Sun 04:00 0.78 · high 5.30 · good 29.60 · good Poor
Sun 05:00 0.78 · high 5.92 · high 29.60 · good Poor
Sun 06:00 0.78 · high 5.66 · high 29.60 · good Poor
Sun 07:00 0.78 · high 5.71 · high 29.60 · good Fair
Sun 08:00 0.76 · high 5.70 · high 29.60 · good Fair
Sun 09:00 0.74 · high 5.44 · high 29.70 · good Fair
Sun 10:00 0.74 · high 5.64 · high 29.70 · good Fair
Sun 11:00 0.72 · high 5.41 · high 29.80 · good Fair
Sun 12:00 0.72 · high 5.15 · good 29.80 · good Fair
Sun 13:00 0.72 · high 5.28 · good 29.90 · good Fair
Sun 14:00 0.74 · high 5.03 · good 29.90 · good Fair