tidealmanac
Sat, Oct 17

Sunday, October 18, 2026

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

Mon, Oct 19

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. Low4:21 AM0.1 ft0.03 m
  2. High5:44 PM0.9 ft0.27 m

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

Sun

Civil dawn
5:56 AM
Sunrise
6:18 AM
Solar noon
12:09 PM
Sunset
6:01 PM
Civil dusk
6:23 PM
Daylight
11h 42m

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

Moon

First quarter49% illuminated · day 7 of the cycle

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

This week

Thu, Oct 15L 2:17AM 0.0 ft0.00 mH 2:25PM 0.9 ft0.26 mFri, Oct 16L 2:56AM 0.0 ft0.00 mH 3:55PM 0.8 ft0.26 mSat, Oct 17L 3:38AM 0.0 ft0.01 mH 5:00PM 0.9 ft0.26 mSun, Oct 18L 4:21AM 0.1 ft0.03 mH 5:44PM 0.9 ft0.27 mMon, Oct 19L 5:02AM 0.2 ft0.06 mH 6:15PM 0.9 ft0.27 mTue, Oct 20L 5:32AM 0.3 ft0.09 mH 6:34PM 0.9 ft0.27 mWed, Oct 21L 5:27AM 0.4 ft0.13 mH 6:45PM 0.8 ft0.26 m