tidealmanac
Fri, Oct 30

Saturday, October 31, 2026

Rio Vista, CA · NOAA 9415316 · MLLW · Local time (America/Los_Angeles)

Sun, Nov 1

Predicted tide height, every 6 minutes

HighLowNightTwilight
4.9 ft1.5 m1.6 ft0.5 m-1.6 ft-0.5 m12 AM3 AM6 AM9 AMNoon3 PM6 PM9 PM12 AMSunrise 7:31 AMSunset 6:09 PM3:19 AM · -0.1 ft3:19 AM · -0.04 m9:43 AM · 2.7 ft9:43 AM · 0.82 m2:34 PM · 1.6 ft2:34 PM · 0.48 m7:38 PM · 3.8 ft7:38 PM · 1.15 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. Low3:19 AM-0.1 ft-0.04 m
  2. High9:43 AM2.7 ft0.82 m
  3. Low2:34 PM1.6 ft0.48 m
  4. High7:38 PM3.8 ft1.15 m

Range 3.9 ft1.19 m · 4 predicted tides · MLLW

Sun

Civil dawn
7:04 AM
Sunrise
7:31 AM
Solar noon
12:50 PM
Sunset
6:09 PM
Civil dusk
6:37 PM
Daylight
10h 38m

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

Moon

Waning gibbous69% illuminated · day 20 of the cycle

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

This week

Wed, Oct 28L 12:30AM -0.2 ft-0.05 mH 6:24AM 2.5 ft0.76 mL 11:26AM 1.3 ft0.40 mH 4:52PM 4.5 ft1.36 mThu, Oct 29L 1:23AM -0.2 ft-0.07 mH 7:30AM 2.5 ft0.76 mL 12:17PM 1.4 ft0.44 mH 5:40PM 4.4 ft1.33 mFri, Oct 30L 2:19AM -0.2 ft-0.06 mH 8:37AM 2.5 ft0.77 mL 1:19PM 1.5 ft0.47 mH 6:34PM 4.1 ft1.25 mSat, Oct 31L 3:19AM -0.1 ft-0.04 mH 9:43AM 2.7 ft0.82 mL 2:34PM 1.6 ft0.48 mH 7:38PM 3.8 ft1.15 mSun, Nov 1L 3:18AM -0.1 ft-0.03 mH 9:43AM 2.9 ft0.88 mL 2:57PM 1.5 ft0.47 mH 7:58PM 3.4 ft1.03 mMon, Nov 2L 4:16AM 0.0 ft-0.01 mH 10:38AM 3.2 ft0.97 mL 4:18PM 1.3 ft0.40 mH 9:31PM 3.1 ft0.95 mTue, Nov 3L 5:08AM 0.1 ft0.02 mH 11:27AM 3.5 ft1.05 mL 5:31PM 1.0 ft0.31 mH 10:55PM 3.0 ft0.91 m