Heights in feet above Mean Lower Low Water (MLLW). Dots are NOAA's predicted highs and lows; the line between them is our interpolation. Shaded: night.
| Tide | Time | Height |
|---|---|---|
| Low tide | 12:40 AM | -0.14 ft |
| High tide | 11:47 AM | 0.88 ft |
| Day | High tides | Low tides |
|---|---|---|
| Today Tue, Oct 27 | 11:47 AM 0.9 ft | 12:40 AM -0.1 ft |
| Tomorrow Wed, Oct 28 | 1:01 PM 0.9 ft | 12:48 AM -0.2 ft |
| Thu, Oct 29 | 2:04 PM 0.9 ft | 12:58 AM -0.2 ft |
| Fri, Oct 30 | 2:57 PM 0.9 ft | 1:25 AM -0.2 ft |
| Sat, Oct 31 | 3:49 PM 0.8 ft | 1:59 AM -0.2 ft |
| Sun, Nov 1 | 4:42 PM 0.8 ft | 2:35 AM -0.1 ft |
| Mon, Nov 2 | 5:23 PM 0.6 ft | 3:03 AM -0.0 ft |
Orange: measured by NOAA's sensor, last 24 hours (6-minute data, preliminary). Dashed: predicted tide, through the next 24 hours. The prediction contains only the astronomical tide; wind, air pressure and river flow move the real water level away from it.
All Puerto Rico tide stations →
On Tuesday, October 27, high tide at Las Mareas is at 11:47 AM (0.9 ft); low tide is at 12:40 AM (-0.1 ft) (AST, heights above MLLW). The table above lists the next 7 days.
The highest predicted tide in the next 12 months is 1.1 ft on December 23, 2026 at 10:37 AM. The largest tides fall a day or two after a full or new moon, especially when the Moon is closest to Earth.
Yes — on 194 days in the next 12 months the low tide drops below 0 ft (MLLW). The lowest is -0.3 ft on November 26, 2026 at 12:36 AM. Minus tides expose the most shoreline, which is why tide-poolers look for them.
Station local time (AST at the time this page was built), with daylight saving time applied where the area observes it — the same convention as NOAA's own tide tables.
From NOAA CO-OPS, the U.S. government tide station network (tidesandcurrents.noaa.gov); the predictions are public domain. The curve between highs and lows is our interpolation. This page is not for navigation.