Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Friday, July 10, 2026
The tide is currently falling in Rio Vista, CA.
Next low tide : in 51m at 8:06 am (0.4 ft)
Next high tide : 1:48 pm (2.3 ft)
Sunset today : 8:31 pm
Sunrise tomorrow : 5:52 am
Moon phase : Waning Crescent (18% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Jan 1992

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed1:172.712:374.36:271.48:32-0.27:234:57Waning Crescent1Wed
2Thu2:102.81:144.37:171.69:16-0.37:234:58Waning Crescent2Thu
3Fri2:592.91:504.28:061.79:57-0.37:234:58New Moon3Fri
4Sat3:443.02:254.28:531.710:34-0.37:234:59New Moon4Sat
5Sun4:263.13:004.19:381.711:07-0.27:235:00New Moon5Sun
6Mon5:053.13:374.010:211.711:380.07:235:01New Moon6Mon
7Tue5:413.24:153.811:031.67:235:02Waxing Crescent7Tue
8Wed6:153.34:553.712:070.111:46 AM1.67:235:03Waxing Crescent8Wed
9Thu6:463.45:393.412:340.312:331.67:235:04Waxing Crescent9Thu
10Fri7:153.56:303.11:020.51:271.67:235:05Waxing Crescent10Fri
11Sat7:453.67:372.81:340.72:331.57:235:06First Quarter11Sat
12Sun8:193.79:162.62:120.93:531.47:225:07First Quarter12Sun
13Mon9:013.910:482.42:561.15:111.27:225:08First Quarter13Mon
14Tue9:494.03:471.36:200.97:225:09First Quarter14Tue
15Wed12:042.510:43 AM4.24:441.57:200.57:215:10Waxing Gibbous15Wed
16Thu1:062.611:37 AM4.45:451.68:130.37:215:11Waxing Gibbous16Thu
17Fri1:592.712:324.56:511.69:010.07:215:12Waxing Gibbous17Fri
18Sat2:472.81:264.67:561.69:46-0.17:205:13Full Moon18Sat
19Sun3:323.02:194.68:571.510:28-0.17:205:14Full Moon19Sun
20Mon4:143.23:134.59:561.311:08-0.17:195:15Full Moon20Mon
21Tue4:563.44:084.310:521.211:460.17:195:16Waning Gibbous21Tue
22Wed5:393.65:054.011:491.17:185:17Waning Gibbous22Wed
23Thu6:213.86:053.712:240.212:491.17:185:18Waning Gibbous23Thu
24Fri7:063.97:113.31:010.51:531.07:175:19Third Quarter24Fri
25Sat7:534.08:233.01:410.73:020.97:175:21Third Quarter25Sat
26Sun8:434.19:402.82:241.04:130.87:165:22Third Quarter26Sun
27Mon9:374.110:542.83:131.25:210.67:155:23Third Quarter27Mon
28Tue10:324.14:091.56:240.47:145:24Waning Crescent28Tue
29Wed12:022.911:25 AM4.15:081.67:180.27:145:25Waning Crescent29Wed
30Thu1:003.012:154.26:081.78:060.07:135:26Waning Crescent30Thu
31Fri1:493.11:004.17:041.88:490.07:125:27Waning Crescent31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415316)

Common Questions About Rio Vista, CA Tides

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What time does the tide turn (slack tide) in Rio Vista, CA today?

Slack tide in Rio Vista, CA is approximately 10:57 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Rio Vista, CA?

Rio Vista, CA is currently in a spring phase. Tonight's moon is 18% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly maximum.

What datum are Rio Vista, CA tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Rio Vista, CA?

Tide predictions for Rio Vista, CA come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Rio Vista, CA?

Tide data for Rio Vista, CA is sourced from NOAA Station #9415316. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9415316.

What is the moon phase in Rio Vista, CA tonight?

Tonight the moon over Rio Vista, CA is Waning Crescent (18% illuminated). This places Rio Vista, CA in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA