Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Thursday, June 25, 2026
The tide is currently falling in Rio Vista, CA.
Next low tide : in 36m at 6:50 pm (1.5 ft)
Next high tide (tomorrow) : 1:22 am (4.3 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 5:45 am
Moon phase : Waxing Gibbous (85% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Oct 2038

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri6:103.35:484.112:410.212:200.87:026:49Waxing Crescent1Fri
2Sat7:153.16:334.11:390.21:011.07:036:48Waxing Crescent2Sat
3Sun8:252.97:234.02:410.21:501.27:046:46First Quarter3Sun
4Mon9:402.88:233.93:480.12:521.47:056:45First Quarter4Mon
5Tue10:542.99:383.64:540.14:071.67:066:43First Quarter5Tue
6Wed12:003.15:570.05:251.67:076:42First Quarter6Wed
7Thu12:573.36:54-0.16:371.47:086:40Waxing Gibbous7Thu
8Fri12:173.41:443.57:44-0.17:411.27:096:39Waxing Gibbous8Fri
9Sat1:183.42:243.68:30-0.18:371.07:106:37Waxing Gibbous9Sat
10Sun2:113.43:003.79:100.09:280.87:116:36Waxing Gibbous10Sun
11Mon2:583.43:333.89:470.210:150.77:126:34Full Moon11Mon
12Tue3:443.34:023.810:200.410:580.57:136:33Full Moon12Tue
13Wed4:293.14:283.810:500.611:400.57:136:31Full Moon13Wed
14Thu5:153.04:513.811:170.87:146:30Full Moon14Thu
15Fri6:052.95:133.912:210.411:44 AM1.07:156:28Waning Gibbous15Fri
16Sat6:582.75:383.91:020.412:151.27:166:27Waning Gibbous16Sat
17Sun7:552.66:103.91:440.412:511.37:176:26Waning Gibbous17Sun
18Mon8:582.66:493.82:310.41:371.57:186:24Waning Gibbous18Mon
19Tue10:022.67:363.63:250.52:331.67:196:23Third Quarter19Tue
20Wed11:042.78:323.44:240.53:411.77:206:22Third Quarter20Wed
21Thu11:582.89:443.35:220.44:551.77:216:20Third Quarter21Thu
22Fri12:433.06:150.46:051.57:226:19Third Quarter22Fri
23Sat1:203.17:040.47:091.27:236:18Waning Crescent23Sat
24Sun12:283.21:523.37:480.48:070.97:246:16Waning Crescent24Sun
25Mon1:313.32:213.58:290.49:030.67:256:15Waning Crescent25Mon
26Tue2:273.32:493.79:090.59:560.27:266:14New Moon26Tue
27Wed3:213.23:203.99:470.610:500.07:276:13New Moon27Wed
28Thu4:163.13:544.110:260.811:42-0.27:286:12New Moon28Thu
29Fri5:133.04:314.211:050.97:306:10Waxing Crescent29Fri
30Sat6:142.85:134.212:36-0.311:48 AM1.17:316:09Waxing Crescent30Sat
31Sun7:202.85:584.11:31-0.412:361.37:326:08Waxing 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 10:06 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 spring phase. Tonight's moon is 85% 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 (85% 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