tidealmanac
Sun, Dec 20

Monday, December 21, 2026

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

Tue, Dec 22

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. High10:10 AM0.9 ft0.29 m
  2. Low10:58 PM-0.3 ft-0.08 m

Range 1.2 ft0.37 m · 2 predicted tides · MLLW

Sun

Civil dawn
6:27 AM
Sunrise
6:51 AM
Solar noon
12:22 PM
Sunset
5:54 PM
Civil dusk
6:17 PM
Daylight
11h 3m

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

Moon

Waxing gibbous93% illuminated · day 12 of the cycle

Between spring and neap: an average tidal range. Approximate phase, computed here.

This week

Fri, 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 mMon, Dec 21H 10:10AM 0.9 ft0.29 mL 10:58PM -0.3 ft-0.08 mTue, Dec 22H 10:43AM 1.0 ft0.30 mL 11:36PM -0.3 ft-0.11 mWed, Dec 23H 11:25AM 1.0 ft0.31 mThu, Dec 24L 12:16AM -0.4 ft-0.12 mH 12:13PM 1.0 ft0.31 m