Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Thursday, July 23, 2026
The tide is currently rising in Rio Vista, CA.
Next low tide : 5:20 pm (1.6 ft)
Next high tide : in 4h 52m at 12:47 pm (2.5 ft)
Sunset today : 8:24 pm
Sunrise tomorrow : 6:02 am
Moon phase : Waxing Gibbous (72% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Mar 2069

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri9:443.911:393.24:031.45:460.46:366:00First Quarter1Fri
2Sat10:543.95:121.46:440.36:356:01Waxing Gibbous2Sat
3Sun12:353.411:57 AM3.96:171.47:340.36:346:02Waxing Gibbous3Sun
4Mon1:243.512:523.87:171.38:200.36:326:03Waxing Gibbous4Mon
5Tue2:063.61:413.88:111.19:000.46:316:04Waxing Gibbous5Tue
6Wed2:453.72:283.89:011.09:370.56:296:05Full Moon6Wed
7Thu3:203.73:133.79:470.910:090.76:286:06Full Moon7Thu
8Fri3:513.73:583.610:300.810:380.86:266:07Full Moon8Fri
9Sat4:203.84:443.511:120.711:051.06:256:08Full Moon9Sat
10Sun5:463.86:333.412:540.77:237:09Waning Gibbous10Sun
11Mon6:103.87:243.212:311.11:370.77:227:10Waning Gibbous11Mon
12Tue6:343.88:193.11:011.22:230.87:207:11Waning Gibbous12Tue
13Wed7:053.89:183.01:381.33:160.87:197:12Waning Gibbous13Wed
14Thu7:453.710:202.92:231.44:140.87:177:13Third Quarter14Thu
15Fri8:333.611:213.03:171.65:150.87:167:14Third Quarter15Fri
16Sat9:343.54:201.66:140.87:147:15Third Quarter16Sat
17Sun12:163.010:50 AM3.45:281.67:080.77:137:16Third Quarter17Sun
18Mon1:043.112:093.46:351.57:570.77:117:17Waning Crescent18Mon
19Tue1:443.31:163.57:381.38:430.77:107:18Waning Crescent19Tue
20Wed2:193.42:133.68:381.09:250.77:087:19Waning Crescent20Wed
21Thu2:533.63:073.69:340.810:070.77:077:20New Moon21Thu
22Fri3:263.84:013.610:280.510:470.87:057:21New Moon22Fri
23Sat4:023.94:573.511:210.311:270.97:037:22New Moon23Sat
24Sun4:404.15:563.412:150.27:027:23Waxing Crescent24Sun
25Mon5:224.26:573.212:080.91:090.17:007:23Waxing Crescent25Mon
26Tue6:084.28:023.212:531.12:060.16:597:24Waxing Crescent26Tue
27Wed6:584.19:083.11:421.23:060.16:577:25Waxing Crescent27Wed
28Thu7:543.910:153.22:391.34:080.26:567:26First Quarter28Thu
29Fri9:003.711:183.33:441.45:100.26:547:27First Quarter29Fri
30Sat10:163.54:541.46:090.36:537:28First Quarter30Sat
31Sun12:163.411:33 AM3.36:031.37:040.36:517:29Waxing Gibbous31Sun
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 3:03 pm — 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 transitional phase. Tonight's moon is 72% 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 shifting between spring and neap.

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 Waxing Gibbous (72% illuminated). This places Rio Vista, CA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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