Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Friday, June 19, 2026
The tide is currently rising in Rio Vista, CA.
Next low tide (tomorrow) : 3:02 am (1.5 ft)
Next high tide : in 1h 20m at 9:15 pm (3.6 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 5:43 am
Moon phase : Waxing Crescent (28% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - May 2020

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri10:063.25:161.46:050.36:097:58First Quarter1Fri
2Sat12:283.211:34 AM3.16:261.26:580.46:087:59Waxing Gibbous2Sat
3Sun1:083.412:523.17:330.87:470.56:068:00Waxing Gibbous3Sun
4Mon1:453.62:003.08:360.48:330.66:058:01Waxing Gibbous4Mon
5Tue2:203.83:013.09:350.19:180.86:048:02Waxing Gibbous5Tue
6Wed2:554.04:012.910:31-0.210:021.06:038:02Full Moon6Wed
7Thu3:314.15:022.811:24-0.410:461.26:028:03Full Moon7Thu
8Fri4:084.26:042.812:16-0.66:018:04Full Moon8Fri
9Sat4:474.27:072.81:07-0.66:008:05Waning Gibbous9Sat
10Sun5:284.18:072.912:171.51:57-0.65:598:06Waning Gibbous10Sun
11Mon6:133.99:053.01:081.62:47-0.55:588:07Waning Gibbous11Mon
12Tue7:033.610:003.12:071.73:38-0.45:578:08Third Quarter12Tue
13Wed8:033.310:533.33:131.84:29-0.35:568:09Third Quarter13Wed
14Thu9:233.011:423.54:261.75:19-0.15:568:10Third Quarter14Thu
15Fri10:522.75:371.56:070.15:558:11Third Quarter15Fri
16Sat12:263.612:102.66:441.26:510.35:548:11Waning Crescent16Sat
17Sun1:063.71:162.67:450.97:330.55:538:12Waning Crescent17Sun
18Mon1:423.82:142.68:400.68:110.85:528:13Waning Crescent18Mon
19Tue2:143.93:082.59:300.38:471.05:528:14Waning Crescent19Tue
20Wed2:413.94:002.510:160.19:221.25:518:15New Moon20Wed
21Thu3:033.94:512.510:590.09:571.45:508:16New Moon21Thu
22Fri3:234.05:422.511:38-0.110:341.55:508:17New Moon22Fri
23Sat3:474.06:322.612:16-0.25:498:17New Moon23Sat
24Sun4:194.17:192.712:52-0.35:488:18Waxing Crescent24Sun
25Mon4:574.18:042.81:28-0.35:488:19Waxing Crescent25Mon
26Tue5:424.18:482.912:451.62:06-0.35:478:20Waxing Crescent26Tue
27Wed6:323.99:323.01:391.62:48-0.25:478:20Waxing Crescent27Wed
28Thu7:283.710:173.22:401.63:35-0.15:468:21First Quarter28Thu
29Fri8:343.411:013.43:491.54:250.05:468:22First Quarter29Fri
30Sat9:543.111:443.65:031.35:150.25:458:23First Quarter30Sat
31Sun11:222.96:151.06:060.45:458:23First Quarter31Sun
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 12:08 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 transitional phase. Tonight's moon is 28% 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 Crescent (28% 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