Know the Tide

Know the tide.

Hawaii & the Territories

Boca de Cangrejos

Puerto Rico · NOAA station 9754986 · Tide predictions

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

18.4566, -65.9915

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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

San Juan buoy · 7 mi W · Station 41053
Wind & wave reports →

Nearby tide stations

Plan ahead

2027 tide extremes for this station

Highest predicted high tide: 1.8 ft — Fri Oct 1 · 10:08 AM

Lowest predicted low tide: -0.5 ft — Thu Jan 21 · 12:58 AM

Biggest single-day swing: 2.1 ft on Sat Jun 5

Best daytime minus tides of 2027
DateLow tideHeight
Sat Jun 52:48 PM-0.4 ft
Fri Jun 41:54 PM-0.4 ft
Sat May 83:56 PM-0.4 ft
Sat Jul 31:37 PM-0.4 ft
Sun Jun 63:43 PM-0.3 ft
Fri Jul 212:42 PM-0.3 ft
Fri May 73:09 PM-0.3 ft
Thu Jun 31:04 PM-0.3 ft
Sun May 94:47 PM-0.3 ft
Sun Jul 42:37 PM-0.3 ft

165 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

Boca de Cangrejos 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 range1.4 ft
Mean range1.0 ft
RegionHawaii & the Territories
NOAA chartUS5PR33M
Station since1983