Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Wednesday, June 17, 2026
The tide is currently rising in Rio Vista, CA.
Next low tide : 1:22 pm (-0.7 ft)
Next high tide : in 3h 14m at 4:51 am (4.3 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 5:43 am
Moon phase : Waxing Crescent (10% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Oct 2027

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri5:003.24:494.111:140.97:026:50Waxing Crescent1Fri
2Sat5:573.05:224.112:260.111:47 AM1.17:036:48Waxing Crescent2Sat
3Sun6:582.95:564.11:180.112:201.37:046:47Waxing Crescent3Sun
4Mon8:032.76:344.02:110.112:591.57:056:45Waxing Crescent4Mon
5Tue9:092.77:193.83:080.11:481.77:066:44First Quarter5Tue
6Wed10:152.88:163.54:060.12:521.97:076:42First Quarter6Wed
7Thu11:162.99:383.35:040.14:091.97:086:41First Quarter7Thu
8Fri12:103.15:580.15:261.87:086:39First Quarter8Fri
9Sat12:563.36:470.26:341.57:096:38Waxing Gibbous9Sat
10Sun12:223.21:353.47:300.37:331.37:106:36Waxing Gibbous10Sun
11Mon1:203.12:093.68:080.48:261.07:116:35Waxing Gibbous11Mon
12Tue2:093.12:373.68:420.59:130.87:126:33Waxing Gibbous12Tue
13Wed2:533.03:013.79:130.79:580.67:136:32Full Moon13Wed
14Thu3:352.93:193.89:410.810:400.57:146:30Full Moon14Thu
15Fri4:172.83:373.910:081.011:210.47:156:29Full Moon15Fri
16Sat5:012.74:004.110:361.17:166:28Full Moon16Sat
17Sun5:492.64:324.212:020.311:09 AM1.27:176:26Waning Gibbous17Sun
18Mon6:442.55:124.312:460.211:48 AM1.37:186:25Waning Gibbous18Mon
19Tue7:462.55:574.21:340.112:341.47:196:23Waning Gibbous19Tue
20Wed8:512.56:494.12:290.11:311.57:206:22Waning Gibbous20Wed
21Thu9:562.67:513.83:300.22:431.67:216:21Third Quarter21Thu
22Fri10:572.89:083.54:330.24:051.57:226:19Third Quarter22Fri
23Sat11:513.010:403.35:320.25:261.37:236:18Third Quarter23Sat
24Sun12:373.36:260.26:391.07:246:17Waning Crescent24Sun
25Mon12:063.21:193.67:140.37:450.67:256:16Waning Crescent25Mon
26Tue1:153.21:563.87:590.48:460.37:266:14Waning Crescent26Tue
27Wed2:143.12:314.08:400.59:420.07:276:13Waning Crescent27Wed
28Thu3:103.03:044.19:190.710:35-0.27:286:12New Moon28Thu
29Fri4:042.83:354.29:561.011:26-0.37:296:11New Moon29Fri
30Sat4:592.74:064.210:321.27:306:10New Moon30Sat
31Sun5:572.74:384.112:14-0.411:08 AM1.47:316:08Waxing Crescent31Sun
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 9:06 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 10% 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 Crescent (10% 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