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Trunk Bay
St. John, USVI
Updated 56m ago
Estimates only. Not safety advice. Verify locally before entering the water. Terms & Conditions
Trunk Bay is looking fair today, a decent day to explore the famous underwater trail, though not quite postcard-perfect. The calm surf, less than a foot, is ideal for navigating the underwater snorkel trail, but a steady 14.7 mph ESE cross-offshore breeze will be noticeable. The estimated visibility today is 30-40 ft, which is a bit lower than Trunk Bay's usual crystal-clear standard, despite minimal recent rainfall.
Wind
ESE 15 mph
Cross-Offshore
Wave Height
Flat
Swell
| Component | Height | Period | Dir |
|---|---|---|---|
| Primary | 2.3 ft | 7s | NE 54° |
| Secondary | 0.4 ft | 7s | NE 42° |
Visibility
~30-40 ft
Rainfall
Minimal impact on visibility
0.01" in last 24h0.01" in last 72h
Temperature
82°F
Water
79°F
Air
12%
Cloud cover
Tide rising(AST)
low 0.1ft @ 5:36 AM
high 0.3ft @ 9:50 AM
low -0.2ft @ 3:38 PM
high 1.1ft @ 11:06 PM
Forecast
Today
Morning
Viz: 30-40 ft
Wind: 16 mph Cross-Shore
Waves: < 1 ft
Afternoon
Viz: 30-40 ft
Wind: 17 mph Cross-Shore
Waves: < 1 ft
Tomorrow
Morning
Viz: 30-40 ft
Wind: 17 mph Cross-Offshore
Waves: < 1 ft
Afternoon
Viz: 30-40 ft
Wind: 15 mph Cross-Offshore
Waves: < 1 ft
Wed, May 6
Morning
Viz: 20-30 ft
Wind: 17 mph Cross-Offshore
Waves: < 1 ft
Afternoon
Viz: 30-40 ft
Wind: 11 mph Cross-Offshore
Waves: < 1 ft
Thu, May 7
Morning
Viz: 30-40 ft
Wind: 13 mph Cross-Shore
Waves: < 1 ft
Afternoon
Viz: 30-40 ft
Wind: 9 mph Cross-Shore
Waves: < 1 ft
Fri, May 8
Morning
Viz: 30-40 ft
Wind: 11 mph Cross-Shore
Waves: < 1 ft
Afternoon
Viz: 30-40 ft
Wind: 10 mph Cross-Shore
Waves: < 1 ft
Sat, May 9
Morning
Viz: 30-40 ft
Wind: 14 mph Cross-Shore
Waves: < 1 ft
Afternoon
Viz: 30-40 ft
Wind: 13 mph Cross-Shore
Waves: < 1 ft
Sun, May 10
Morning
Viz: 20-30 ft
Wind: 18 mph Cross-Shore
Waves: < 1 ft
Afternoon
Viz: 20-30 ft
Wind: 18 mph Cross-Shore
Waves: < 1 ft
Site Notes
Underwater trail marked with signs along the reef. North-facing — exposed to northerly swells in winter. Best on calm days. National Park entrance fee required.