tidealmanac
Wed, Dec 16

Thursday, December 17, 2026

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

Fri, Dec 18

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. Low12:39 AM0.3 ft0.08 m
  2. High12:09 PM0.7 ft0.21 m
  3. Low10:42 PM0.2 ft0.07 m

Range 0.5 ft0.14 m · 3 predicted tides · MLLW

Sun

Civil dawn
6:25 AM
Sunrise
6:48 AM
Solar noon
12:20 PM
Sunset
5:52 PM
Civil dusk
6:15 PM
Daylight
11h 3m

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

Moon

First quarter59% illuminated · day 8 of the cycle

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

This week

Mon, Dec 14L 2:25AM 0.0 ft-0.01 mH 1:43PM 0.8 ft0.25 mTue, Dec 15L 2:38AM 0.1 ft0.03 mH 1:48PM 0.8 ft0.24 mWed, Dec 16L 2:26AM 0.2 ft0.06 mH 1:27PM 0.7 ft0.22 mThu, Dec 17L 12:39AM 0.3 ft0.08 mH 12:09PM 0.7 ft0.21 mL 10:42PM 0.2 ft0.07 mFri, Dec 18H 10:30AM 0.7 ft0.22 mL 10:11PM 0.1 ft0.04 mSat, Dec 19H 9:52AM 0.8 ft0.24 mL 10:10PM 0.0 ft-0.01 mSun, Dec 20H 9:50AM 0.9 ft0.27 mL 10:27PM -0.2 ft-0.05 m