Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Wednesday, July 8, 2026
The tide is currently falling in Rio Vista, CA.
Next low tide : in 51m at 4:19 pm (1.0 ft)
Next high tide : 10:38 pm (4.3 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 5:51 am
Moon phase : Third Quarter (39% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Feb 2055

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon6:573.66:273.412:500.51:021.67:105:29Waxing Crescent1Mon
2Tue7:303.67:293.11:210.72:001.67:105:30Waxing Crescent2Tue
3Wed8:043.68:472.91:570.93:091.57:095:31First Quarter3Wed
4Thu8:423.710:092.72:401.14:241.47:085:33First Quarter4Thu
5Fri9:263.811:222.73:291.35:351.27:075:34First Quarter5Fri
6Sat10:153.94:231.56:371.07:065:35First Quarter6Sat
7Sun12:252.811:07 AM4.05:211.67:320.77:055:36Waxing Gibbous7Sun
8Mon1:192.911:59 AM4.26:211.68:210.57:045:37Waxing Gibbous8Mon
9Tue2:062.912:504.37:201.69:060.37:035:38Waxing Gibbous9Tue
10Wed2:483.01:414.48:181.59:480.27:025:39Full Moon10Wed
11Thu3:293.22:334.59:141.410:290.27:005:40Full Moon11Thu
12Fri4:083.33:264.410:081.211:080.26:595:41Full Moon12Fri
13Sat4:483.54:214.311:021.111:470.36:585:43Waning Gibbous13Sat
14Sun5:293.75:194.111:581.06:575:44Waning Gibbous14Sun
15Mon6:123.86:213.812:260.412:570.96:565:45Waning Gibbous15Mon
16Tue6:593.97:283.51:070.62:010.96:555:46Waning Gibbous16Tue
17Wed7:504.08:413.21:510.93:110.86:535:47Third Quarter17Wed
18Thu8:464.09:563.12:421.14:220.76:525:48Third Quarter18Thu
19Fri9:464.011:073.13:391.35:290.66:515:49Third Quarter19Fri
20Sat10:474.04:411.56:310.46:505:50Waning Crescent20Sat
21Sun12:113.211:44 AM4.05:431.57:250.26:485:51Waning Crescent21Sun
22Mon1:063.312:354.06:421.68:130.16:475:52Waning Crescent22Mon
23Tue1:553.41:224.07:371.58:570.16:465:53Waning Crescent23Tue
24Wed2:383.52:054.08:281.59:360.26:445:54New Moon24Wed
25Thu3:173.52:473.99:141.410:110.36:435:55New Moon25Thu
26Fri3:533.53:283.99:571.310:430.46:425:57New Moon26Fri
27Sat4:263.64:093.810:381.211:120.66:405:58New Moon27Sat
28Sun4:553.64:513.611:171.211:390.76:395:59Waxing Crescent28Sun
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 7:28 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 39% 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 Third Quarter (39% 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