tidealmanac
Sun, Dec 20

Monday, December 21, 2026

Monument Beach, MA · NOAA 8447355 · MLLW · Local time (America/New_York)

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. High5:00 AM4.5 ft1.38 m
  2. Low11:34 AM-0.1 ft-0.03 m
  3. High5:30 PM3.7 ft1.12 m
  4. Low11:05 PM-0.5 ft-0.15 m

Range 5.0 ft1.52 m · 4 predicted tides · MLLW

Sun

Civil dawn
6:34 AM
Sunrise
7:06 AM
Solar noon
11:40 AM
Sunset
4:15 PM
Civil dusk
4:46 PM
Daylight
9h 9m

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 2:02AM 3.6 ft1.10 mL 8:29AM 0.7 ft0.20 mH 2:23PM 3.2 ft0.97 mL 8:19PM 0.2 ft0.06 mSat, Dec 19H 2:57AM 3.9 ft1.18 mL 9:41AM 0.4 ft0.14 mH 3:25PM 3.2 ft0.98 mL 9:16PM 0.0 ft-0.01 mSun, Dec 20H 3:58AM 4.2 ft1.27 mL 10:41AM 0.2 ft0.05 mH 4:29PM 3.4 ft1.04 mL 10:12PM -0.2 ft-0.08 mMon, Dec 21H 5:00AM 4.5 ft1.38 mL 11:34AM -0.1 ft-0.03 mH 5:30PM 3.7 ft1.12 mL 11:05PM -0.5 ft-0.15 mTue, Dec 22H 5:57AM 4.9 ft1.49 mL 12:26PM -0.3 ft-0.09 mH 6:26PM 4.0 ft1.22 mL 11:58PM -0.7 ft-0.21 mWed, Dec 23H 6:52AM 5.2 ft1.57 mL 1:20PM -0.4 ft-0.14 mH 7:19PM 4.3 ft1.30 mThu, Dec 24L 12:53AM -0.8 ft-0.24 mH 7:45AM 5.3 ft1.62 mL 2:15PM -0.5 ft-0.16 mH 8:11PM 4.5 ft1.36 m