Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Saturday, June 27, 2026
The tide is currently rising in Rio Vista, CA.
Next low tide : 10:10 am (-0.4 ft)
Next high tide : in 1h 26m at 1:55 am (4.3 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 5:45 am
Moon phase : Waxing Gibbous (96% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Oct 2040

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:293.42:143.48:070.27:471.47:036:48Waning Crescent1Mon
2Tue1:253.42:483.58:450.28:381.27:046:47Waning Crescent2Tue
3Wed2:123.43:183.59:180.49:251.07:056:45Waning Crescent3Wed
4Thu2:543.43:413.59:480.510:080.87:066:44New Moon4Thu
5Fri3:333.33:593.610:140.610:500.77:066:42New Moon5Fri
6Sat4:133.34:133.710:380.811:310.67:076:41New Moon6Sat
7Sun4:553.14:323.911:030.97:086:39New Moon7Sun
8Mon5:413.05:014.112:130.411:32 AM1.07:096:38Waxing Crescent8Mon
9Tue6:352.85:384.212:580.312:061.17:106:36Waxing Crescent9Tue
10Wed7:392.76:224.21:510.312:481.37:116:35Waxing Crescent10Wed
11Thu8:522.67:124.12:540.31:401.57:126:33First Quarter11Thu
12Fri10:082.68:123.94:020.22:481.67:136:32First Quarter12Fri
13Sat11:192.79:293.65:100.14:141.77:146:31First Quarter13Sat
14Sun12:193.06:120.15:421.57:156:29First Quarter14Sun
15Mon1:093.27:070.06:581.37:166:28Waxing Gibbous15Mon
16Tue12:313.41:523.57:570.08:040.97:176:26Waxing Gibbous16Tue
17Wed1:383.42:303.78:420.19:040.67:186:25Waxing Gibbous17Wed
18Thu2:353.33:053.89:240.29:590.47:196:24Full Moon18Thu
19Fri3:283.23:394.010:020.410:510.27:206:22Full Moon19Fri
20Sat4:213.14:104.010:390.611:400.17:216:21Full Moon20Sat
21Sun5:152.94:414.111:130.97:226:20Full Moon21Sun
22Mon6:122.85:114.112:290.011:46 AM1.17:236:18Waning Gibbous22Mon
23Tue7:132.75:434.01:170.012:201.37:246:17Waning Gibbous23Tue
24Wed8:172.66:193.92:060.01:011.67:256:16Waning Gibbous24Wed
25Thu9:202.77:023.72:580.01:511.77:266:15Waning Gibbous25Thu
26Fri10:222.87:553.43:530.02:561.87:276:13Third Quarter26Fri
27Sat11:192.99:063.24:470.14:101.87:286:12Third Quarter27Sat
28Sun12:103.15:390.15:231.77:296:11Third Quarter28Sun
29Mon12:543.36:270.26:291.47:306:10Third Quarter29Mon
30Tue1:313.47:090.37:271.17:316:09Waning Crescent30Tue
31Wed12:572.92:023.57:460.48:190.97:326:08Waning Crescent31Wed
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 6:02 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 96% 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 Waxing Gibbous (96% 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