Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently rising in Rio Vista, CA.
Next low tide (tomorrow) : 7:36 am (0.4 ft)
Next high tide (tomorrow) : in 4h 20m at 12:08 am (4.2 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 5:44 am
Moon phase : First Quarter (69% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Oct 2035

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon3:463.64:203.810:410.411:150.47:026:50New Moon1Mon
2Tue4:363.44:543.811:160.67:036:48New Moon2Tue
3Wed5:273.35:263.812:030.411:49 AM0.87:046:47Waxing Crescent3Wed
4Thu6:213.15:573.812:500.312:211.07:056:45Waxing Crescent4Thu
5Fri7:183.06:303.81:380.312:541.27:066:44Waxing Crescent5Fri
6Sat8:182.97:073.72:280.41:331.37:076:42Waxing Crescent6Sat
7Sun9:222.97:523.53:220.42:221.57:086:40First Quarter7Sun
8Mon10:262.98:513.34:200.43:241.67:096:39First Quarter8Mon
9Tue11:263.010:133.25:170.44:361.67:096:38First Quarter9Tue
10Wed12:213.16:110.45:461.67:106:36First Quarter10Wed
11Thu1:073.37:000.46:501.47:116:35Waxing Gibbous11Thu
12Fri12:383.11:463.47:440.47:461.27:126:33Waxing Gibbous12Fri
13Sat1:303.12:193.48:230.48:371.07:136:32Waxing Gibbous13Sat
14Sun2:153.22:463.59:000.59:240.87:146:30Waxing Gibbous14Sun
15Mon2:573.23:093.69:340.610:080.67:156:29Full Moon15Mon
16Tue3:393.13:323.810:070.710:520.47:166:27Full Moon16Tue
17Wed4:233.13:583.910:410.811:370.37:176:26Full Moon17Wed
18Thu5:103.04:324.111:160.97:186:25Full Moon18Thu
19Fri6:042.95:124.212:230.111:56 AM1.07:196:23Waning Gibbous19Fri
20Sat7:042.95:574.21:130.112:421.17:206:22Waning Gibbous20Sat
21Sun8:102.86:494.12:090.11:361.27:216:21Waning Gibbous21Sun
22Mon9:192.87:493.83:100.12:411.37:226:19Third Quarter22Mon
23Tue10:282.99:023.64:150.13:571.37:236:18Third Quarter23Tue
24Wed11:313.110:283.35:180.15:141.27:246:17Third Quarter24Wed
25Thu12:273.46:160.16:261.07:256:16Waning Crescent25Thu
26Fri1:153.67:090.17:310.77:266:14Waning Crescent26Fri
27Sat12:593.21:583.87:570.28:310.57:276:13Waning Crescent27Sat
28Sun1:573.22:363.98:420.39:250.27:286:12Waning Crescent28Sun
29Mon2:503.13:103.99:230.410:160.17:296:11New Moon29Mon
30Tue3:403.13:423.910:010.611:03-0.17:306:10New Moon30Tue
31Wed4:303.04:123.910:360.911:48-0.17:316:08New Moon31Wed
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 3:52 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 69% 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 First Quarter (69% 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