Know the Tide

Know the tide.

Hawaii & the Territories

Hawksnest Beach

St. John · Puerto Rico · NOAA station 9751417 · Tide predictions

· Atlantic Time · Feet / MLLW (mean lower low water)

18.3489, -64.7774

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48-hour outlook

Drag across the curve to inspect any time. Weather icons show the forecast at each high tide.

The next seven days

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H = high tide · L = low tide · highs & lows in local time

On the water nearby

Vieques Island buoy · 45 mi W · Station 41056
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Nearby tide stations

Plan ahead

2027 tide extremes for this station

Highest predicted high tide: 1.7 ft — Sat Oct 30 · 9:25 AM

Lowest predicted low tide: -0.4 ft — Thu Jan 21 · 12:32 AM

Biggest single-day swing: 1.9 ft on Sat Jul 3

Best daytime minus tides of 2027
DateLow tideHeight
Sat Jun 52:21 PM-0.4 ft
Fri Jun 41:27 PM-0.3 ft
Sat May 83:29 PM-0.3 ft
Sat Jul 31:10 PM-0.3 ft
Sun Jun 63:16 PM-0.3 ft
Fri Jul 212:14 PM-0.3 ft
Fri May 72:43 PM-0.3 ft
Sun May 94:16 PM-0.3 ft
Sun Jul 42:12 PM-0.3 ft
Thu Jun 312:39 PM-0.3 ft

184 minus tides (below 0 ft) are predicted here in 2027. The table shows up to the 10 lowest that fall between 7 AM and 7 PM — the ones worth planning a clam dig or tidepool walk around.

About this station

Hawksnest Beach, St. John is one of NOAA's reference tide stations — its predictions are computed directly from harmonic analysis of water levels observed here, and other nearby stations are calculated from it.

Trade-wind shores with small mixed tides — a foot or two in Hawaii, a few feet in the Caribbean — where swell and season matter more than range.

Diurnal range1.3 ft
Mean range0.9 ft
RegionHawaii & the Territories
NOAA chart25647
Station since2020