tidealmanac
Tue, Oct 20

Wednesday, October 21, 2026

Arecibo, PR · NOAA 9757809 · MLLW · Local time (America/Puerto_Rico)

Thu, Oct 22

Predicted tide height, every 6 minutes

HighLowNightTwilight
3.3 ft1.0 m1.6 ft0.5 m0 ft0.0 m12 AM3 AM6 AM9 AMNoon3 PM6 PM9 PM12 AMSunrise 6:22 AMSunset 6:01 PM4:15 AM · 1.3 ft4:15 AM · 0.38 m10:03 AM · 0.6 ft10:03 AM · 0.18 m4:43 PM · 1.6 ft4:43 PM · 0.50 m11:12 PM · 0.6 ft11:12 PM · 0.19 m

NOAA's sampled predictions for this station and day. Sun times are computed here from the station's coordinates and are not NOAA data.

Tides

  1. High4:15 AM1.3 ft0.38 m
  2. Low10:03 AM0.6 ft0.18 m
  3. High4:43 PM1.6 ft0.50 m
  4. Low11:12 PM0.6 ft0.19 m

Range 1.1 ft0.32 m · 4 predicted tides · MLLW

Sun

Civil dawn
6:00 AM
Sunrise
6:22 AM
Solar noon
12:11 PM
Sunset
6:01 PM
Civil dusk
6:23 PM
Daylight
11h 38m

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

Moon

Waxing gibbous79% illuminated · day 10 of the cycle

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

This week

Sun, Oct 18H 12:59AM 0.9 ft0.29 mL 6:52AM 0.3 ft0.10 mH 2:14PM 1.7 ft0.51 mL 9:19PM 0.7 ft0.22 mMon, Oct 19H 2:03AM 1.0 ft0.31 mL 7:50AM 0.4 ft0.13 mH 3:06PM 1.7 ft0.51 mL 10:03PM 0.7 ft0.22 mTue, Oct 20H 3:10AM 1.1 ft0.34 mL 8:54AM 0.5 ft0.16 mH 3:56PM 1.7 ft0.51 mL 10:40PM 0.7 ft0.21 mWed, Oct 21H 4:15AM 1.3 ft0.38 mL 10:03AM 0.6 ft0.18 mH 4:43PM 1.6 ft0.50 mL 11:12PM 0.6 ft0.19 mThu, Oct 22H 5:13AM 1.5 ft0.44 mL 11:11AM 0.6 ft0.18 mH 5:27PM 1.6 ft0.48 mL 11:44PM 0.5 ft0.15 mFri, Oct 23H 6:05AM 1.7 ft0.51 mL 12:16PM 0.6 ft0.18 mH 6:10PM 1.5 ft0.46 mSat, Oct 24L 12:16AM 0.4 ft0.11 mH 6:53AM 1.9 ft0.57 mL 1:16PM 0.5 ft0.16 mH 6:51PM 1.4 ft0.42 m