Hawaii & the Territories
Santa Isabel
Puerto Rico · NOAA station 9756639 · Tide predictions
17.9550, -66.4067
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48-hour outlook
Drag across the curve to inspect any time. Weather icons show the forecast at each high tide.
Drawn from the high/low predictions — NOAA publishes high/low only for this station.
The next seven days
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H = high tide · L = low tide · highs & lows in local time
On the water nearby
Southeast of Ponce buoy · 10 mi SW · Station 42085
Wind & wave reports →
Nearby tide stations
- Central Aguirre · 11.9 mi E
- Ponce · 14.0 mi W
- Las Mareas · 16.4 mi E
- Penuelas (Punta Guayanilla) · 23.4 mi W
- Guanica · 32.9 mi W
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 1.2 ft — Thu Oct 21 · 5:40 PM
Lowest predicted low tide: -0.5 ft — Tue Jan 19 · 10:51 PM
Biggest single-day swing: 1.3 ft on Fri Jul 2
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Sat Jun 5 | 12:49 PM | -0.3 ft |
| Fri Jun 4 | 12:12 PM | -0.3 ft |
| Fri Jul 2 | 11:30 AM | -0.3 ft |
| Sat Jul 3 | 12:05 PM | -0.3 ft |
| Fri May 21 | 11:34 AM | -0.3 ft |
| Thu May 20 | 11:00 AM | -0.3 ft |
| Sun Jun 6 | 1:26 PM | -0.3 ft |
| Thu Jun 3 | 11:40 AM | -0.3 ft |
| Sat May 22 | 12:15 PM | -0.3 ft |
| Thu Jul 1 | 10:56 AM | -0.3 ft |
217 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
Santa Isabel 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.