tidealmanac
Fri, Sep 11

Saturday, September 12, 2026

Arroyo, PR · NOAA TEC4737 · MLLW · Local time (America/Puerto_Rico)

Sun, Sep 13

This is a subordinate station: NOAA predicts its highs and lows from a nearby reference station and publishes no curve for it. Nothing is interpolated.

Tides

  1. Low3:55 AM0.6 ft0.17 m
  2. High9:43 AM0.7 ft0.22 m
  3. Low3:30 PM0.6 ft0.20 m
  4. High8:19 PM0.7 ft0.22 m

Range 0.2 ft0.05 m · 4 predicted tides · MLLW

Sun

Civil dawn
5:50 AM
Sunrise
6:12 AM
Solar noon
12:21 PM
Sunset
6:30 PM
Civil dusk
6:52 PM
Daylight
12h 18m

Computed from the station's coordinates (NOAA solar algorithm, ±1 min); not NOAA tide data. Sun calendars: sunupsundown.site.

Moon

New moon1% illuminated · day 0 of the cycle

Near new or full moon: spring tides, a larger range than average. Approximate phase, computed here.

This week

Wed, Sep 9L 11:49AM 0.3 ft0.09 mH 10:15PM 1.0 ft0.29 mThu, Sep 10L 12:49PM 0.4 ft0.13 mH 9:42PM 0.9 ft0.26 mFri, Sep 11L 4:30AM 0.6 ft0.19 mH 8:00AM 0.6 ft0.20 mL 1:50PM 0.5 ft0.17 mH 8:53PM 0.8 ft0.23 mSat, Sep 12L 3:55AM 0.6 ft0.17 mH 9:43AM 0.7 ft0.22 mL 3:30PM 0.6 ft0.20 mH 8:19PM 0.7 ft0.22 mSun, Sep 13L 3:26AM 0.5 ft0.14 mH 11:10AM 0.8 ft0.23 mMon, Sep 14L 2:41AM 0.3 ft0.10 mH 3:00PM 0.8 ft0.25 mTue, Sep 15L 2:44AM 0.2 ft0.07 mH 3:56PM 0.8 ft0.26 m