Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Tuesday, July 7, 2026
The tide is currently rising in Rio Vista, CA.
Next low tide : 3:37 pm (0.7 ft)
Next high tide : in 2h 23m at 9:09 am (2.7 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 5:50 am
Moon phase : Third Quarter (50% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Oct 1996

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue7:573.06:573.92:060.31:321.27:036:49Waning Gibbous1Tue
2Wed9:022.97:463.73:020.32:211.47:036:47Third Quarter2Wed
3Thu10:073.08:453.54:000.43:211.57:046:46Third Quarter3Thu
4Fri11:103.09:573.44:590.44:271.67:056:44Third Quarter4Fri
5Sat12:063.25:550.45:351.57:066:43Third Quarter5Sat
6Sun12:563.46:470.36:381.37:076:41Waning Crescent6Sun
7Mon12:183.31:393.57:320.47:351.17:086:40Waning Crescent7Mon
8Tue1:153.32:173.68:130.48:270.97:096:38Waning Crescent8Tue
9Wed2:033.32:493.68:490.59:150.77:106:37Waning Crescent9Wed
10Thu2:473.23:153.69:220.79:590.67:116:35New Moon10Thu
11Fri3:283.23:363.69:510.810:420.57:126:34New Moon11Fri
12Sat4:083.13:533.710:190.911:230.47:136:32New Moon12Sat
13Sun4:503.04:133.910:480.97:146:31New Moon13Sun
14Mon5:343.04:424.012:030.311:20 AM1.07:156:30Waxing Crescent14Mon
15Tue6:222.95:204.112:460.211:58 AM1.17:166:28Waxing Crescent15Tue
16Wed7:172.86:044.11:320.212:421.27:176:27Waxing Crescent16Wed
17Thu8:182.86:553.92:240.21:351.37:186:25Waxing Crescent17Thu
18Fri9:242.87:553.73:240.22:411.37:196:24First Quarter18Fri
19Sat10:293.09:103.54:270.24:001.47:206:23First Quarter19Sat
20Sun11:293.110:433.35:280.25:211.27:216:21First Quarter20Sun
21Mon12:233.46:250.26:361.07:226:20Waxing Gibbous21Mon
22Tue12:083.21:113.67:170.27:430.77:236:19Waxing Gibbous22Tue
23Wed1:173.21:533.88:060.28:440.47:246:17Waxing Gibbous23Wed
24Thu2:163.22:334.08:520.39:400.27:256:16Waxing Gibbous24Thu
25Fri3:113.13:094.19:350.510:320.07:266:15Full Moon25Fri
26Sat4:043.13:454.110:170.711:22-0.17:276:14Full Moon26Sat
27Sun3:573.03:194.19:570.911:09-0.26:285:13Full Moon27Sun
28Mon4:522.93:544.010:371.111:56-0.26:295:11Waning Gibbous28Mon
29Tue5:492.94:313.911:171.26:305:10Waning Gibbous29Tue
30Wed6:462.95:103.812:42-0.112:011.46:315:09Waning Gibbous30Wed
31Thu7:442.95:563.61:29-0.112:521.56:325:08Waning Gibbous31Thu
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 12:23 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 neap phase. Tonight's moon is 50% 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 minimum.

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 (50% illuminated). This places Rio Vista, CA in a neap tide cycle, so tidal ranges are near their weekly minimum 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