tidealmanac
Thu, Sep 10

Friday, September 11, 2026

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

Sat, Sep 12

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. Low4:30 AM0.6 ft0.19 m
  2. High8:00 AM0.6 ft0.20 m
  3. Low1:50 PM0.5 ft0.17 m
  4. High8:53 PM0.8 ft0.23 m

Range 0.2 ft0.07 m · 4 predicted tides · MLLW

Sun

Civil dawn
5:50 AM
Sunrise
6:12 AM
Solar noon
12:21 PM
Sunset
6:31 PM
Civil dusk
6:52 PM
Daylight
12h 19m

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

Moon

New moon0% illuminated · day 29 of the cycle

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

This week

Tue, Sep 8L 10:41AM 0.2 ft0.06 mH 10:03PM 1.0 ft0.32 mWed, 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 m