MARINE REPORT / 72 HOURS

Trunk Bay Snorkel Report Today

US Virgin Islands · Updated Sat 09:19 (AST) · Source: Snapshot

The skinny

Marginal Data updated Sat 09:19 (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 · 4.1/10

Sat 10:00 (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

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

29.7°C

Max air

28.9°C

Sky

Clear

5% 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 (70 hours)
  • Tide/current (48 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

Sat 10:00 – Tue 10:00 (AST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.47 around Sun 09:00; 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 0.74m to 0.9m).

Wind is at or below 5.4m/s in 8/24 sampled hours (range 4.84 to 6.89m/s).

Tides range from 0.2m 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
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
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
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
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 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
Sun 15:00 0.74 · high 4.58 · good 29.90 · good Fair
Sun 16:00 0.72 · high 3.72 · good 29.90 · good Fair
Sun 17:00 0.72 · high 3.20 · good 29.90 · good Fair
Sun 18:00 0.72 · high 4.18 · good 29.80 · good Fair
Sun 19:00 0.70 · high 5.09 · good 29.80 · good Poor
Sun 20:00 0.70 · high 4.27 · good 29.80 · good Poor
Sun 21:00 0.70 · high 4.07 · good 29.80 · good Poor
Sun 22:00 0.70 · high 3.94 · good 29.70 · good Poor
Sun 23:00 0.70 · high 5.81 · high 29.70 · good Poor
Mon 00:00 0.70 · high 6.46 · high 29.70 · good Poor
Mon 01:00 0.72 · high 5.70 · high 29.70 · good Poor
Mon 02:00 0.72 · high 4.84 · good 29.70 · good Poor
Mon 03:00 0.74 · high 4.89 · good 29.70 · good Poor
Mon 04:00 0.74 · high 4.75 · good 29.60 · good Poor
Mon 05:00 0.76 · high 5.23 · good 29.60 · good Poor
Mon 06:00 0.76 · high 4.80 · good 29.60 · good Poor
Mon 07:00 0.78 · high 4.76 · good 29.60 · good Fair
Mon 08:00 0.72 · high 5.88 · high 29.60 · good Fair
Mon 09:00 0.72 · high 5.99 · high 29.70 · good Fair
Mon 10:00 0.72 · high 5.95 · high 29.70 · good Fair
Mon 11:00 0.72 · high 5.22 · good 29.80 · good Fair
Mon 12:00 0.72 · high 5.16 · good 29.80 · good Fair
Mon 13:00 0.72 · high 5.34 · good 29.90 · good Fair
Mon 14:00 0.72 · high 5.00 · good 29.90 · good Fair
Mon 15:00 0.72 · high 5.56 · high 29.90 · good Fair
Mon 16:00 0.72 · high 5.86 · high 29.90 · good Fair
Mon 17:00 0.72 · high 5.86 · high 29.90 · good Fair
Mon 18:00 0.72 · high 5.40 · good 29.80 · good Fair
Mon 19:00 0.72 · high 5.10 · good 29.80 · good Poor
Mon 20:00 0.72 · high 4.86 · good 29.80 · good Poor
Mon 21:00 0.72 · high 5.30 · good 29.80 · good Poor
Mon 22:00 0.72 · high 5.51 · high 29.70 · good Poor
Mon 23:00 0.72 · high 5.55 · high 29.70 · good Poor
Tue 00:00 0.72 · high 5.70 · high 29.70 · good Poor
Tue 01:00 0.72 · high 5.61 · high 29.70 · good Poor
Tue 02:00 0.72 · high 6.59 · high 29.70 · good Poor
Tue 03:00 0.72 · high 6.53 · high 29.70 · good Poor
Tue 04:00 0.72 · high 6.37 · high 29.70 · good Poor
Tue 05:00 0.72 · high 5.91 · high 29.70 · good Poor
Tue 06:00 0.72 · high 6.07 · high 29.60 · good Poor
Tue 07:00 0.88 · high 5.78 · high 29.60 · good Fair
Tue 08:00 0.88 · high 5.46 · high 29.60 · good Fair
Tue 09:00 0.88 · high 5.47 · high 29.70 · good Fair