tidealmanac
Sat, Sep 19

Sunday, September 20, 2026

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

Mon, Sep 21

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. Low6:30 AM0.1 ft0.04 m
  2. High7:52 PM0.9 ft0.28 m

Range 0.8 ft0.24 m · 2 predicted tides · MLLW

Sun

Civil dawn
5:51 AM
Sunrise
6:13 AM
Solar noon
12:18 PM
Sunset
6:23 PM
Civil dusk
6:45 PM
Daylight
12h 10m

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

Moon

First quarter65% illuminated · day 8 of the cycle

Near quarter moon: neap tides, a smaller range than average. Approximate phase, computed here.

This week

Thu, Sep 17L 3:47AM 0.1 ft0.03 mH 5:35PM 0.9 ft0.26 mFri, Sep 18L 4:32AM 0.1 ft0.02 mH 6:27PM 0.9 ft0.26 mSat, Sep 19L 5:26AM 0.1 ft0.03 mH 7:14PM 0.9 ft0.27 mSun, Sep 20L 6:30AM 0.1 ft0.04 mH 7:52PM 0.9 ft0.28 mMon, Sep 21L 7:43AM 0.2 ft0.06 mH 8:17PM 0.9 ft0.29 mTue, Sep 22L 8:58AM 0.3 ft0.08 mH 8:32PM 1.0 ft0.29 mWed, Sep 23L 10:05AM 0.4 ft0.11 mH 8:39PM 0.9 ft0.28 m