38.1450’ N, 121.6920’ W

Rio Vista, CA

76°
H 86°
L 56°
WSW
14mph
Low tide
11:40 am

Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Saturday, August 29, 2026
The tide is currently falling in Rio Vista, CA.
Next low tide : in 43m at 11:40 am (0.5 ft)
Next high tide : 5:15 pm (3.7 ft)
Sunset today : 7:40 pm
Sunrise tomorrow : 6:34 am
Moon phase : Full Moon (97% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Mar 1922

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed5:023.75:253.511:461.111:520.96:395:59Waxing Crescent1Wed
2Thu5:253.86:113.312:251.16:376:00Waxing Crescent2Thu
3Fri5:523.87:053.112:241.01:101.16:366:01Waxing Crescent3Fri
4Sat6:273.98:113.01:011.12:051.16:346:02Waxing Crescent4Sat
5Sun7:103.99:232.91:471.33:141.16:336:03First Quarter5Sun
6Mon8:023.810:332.92:411.44:271.06:316:04First Quarter6Mon
7Tue9:053.811:343.03:441.55:340.96:306:05First Quarter7Tue
8Wed10:173.84:521.56:330.76:296:06Waxing Gibbous8Wed
9Thu12:273.111:29 AM3.96:001.47:260.66:276:07Waxing Gibbous9Thu
10Fri1:123.212:334.07:051.28:150.56:266:08Waxing Gibbous10Fri
11Sat1:533.41:314.08:051.09:000.56:246:09Waxing Gibbous11Sat
12Sun2:333.52:274.09:030.89:430.56:236:10Full Moon12Sun
13Mon3:123.73:223.99:580.610:240.66:216:11Full Moon13Mon
14Tue3:513.84:183.810:510.411:040.76:206:12Full Moon14Tue
15Wed4:313.95:163.611:450.311:440.86:186:13Waning Gibbous15Wed
16Thu5:134.06:173.412:390.36:166:14Waning Gibbous16Thu
17Fri5:584.07:203.312:251.01:370.36:156:15Waning Gibbous17Fri
18Sat6:473.98:253.21:111.22:370.46:136:16Third Quarter18Sat
19Sun7:423.79:323.22:041.43:390.46:126:17Third Quarter19Sun
20Mon8:483.610:353.23:061.54:410.46:106:18Third Quarter20Mon
21Tue9:593.511:333.44:131.55:380.36:096:19Third Quarter21Tue
22Wed11:083.45:181.56:310.36:076:19Waning Crescent22Wed
23Thu12:233.512:093.46:201.37:180.36:066:20Waning Crescent23Thu
24Fri1:083.61:023.47:161.28:010.46:046:21Waning Crescent24Fri
25Sat1:473.71:493.48:061.08:400.56:036:22Waning Crescent25Sat
26Sun2:223.72:343.48:530.99:150.76:016:23New Moon26Sun
27Mon2:533.73:163.39:360.79:470.86:006:24New Moon27Mon
28Tue3:203.73:593.310:170.610:170.95:586:25New Moon28Tue
29Wed3:423.74:413.210:550.610:461.05:566:26New Moon29Wed
30Thu4:033.85:253.111:320.511:171.15:556:27Waxing Crescent30Thu
31Fri4:283.96:133.112:100.55:536:28Waxing Crescent31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415316)

Common Questions About Rio Vista, CA Tides

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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 97% 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 Full Moon (97% 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