38.1450’ N, 121.6920’ W

Rio Vista, CA

81°
H 82°
L 56°
WSW
9mph
Low tide
5:01 pm

Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Saturday, September 5, 2026
The tide is currently falling in Rio Vista, CA.
Next low tide : in 2h 33m at 5:01 pm (1.8 ft)
Next high tide : 10:41 pm (4.2 ft)
Sunset today : 7:30 pm
Sunrise tomorrow : 6:40 am
Moon phase : Third Quarter (34% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Apr 1899

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat5:564.18:332.912:371.42:270.35:516:29Third Quarter1Sat
2Sun6:523.99:363.01:371.53:300.35:496:30Third Quarter2Sun
3Mon8:013.710:353.12:501.54:330.35:486:31Third Quarter3Mon
4Tue9:283.511:283.34:091.45:310.35:466:32Third Quarter4Tue
5Wed10:583.45:261.26:240.45:456:33Waning Crescent5Wed
6Thu12:153.512:133.36:360.97:140.45:436:34Waning Crescent6Thu
7Fri12:573.71:163.37:400.68:000.55:426:35Waning Crescent7Fri
8Sat1:363.92:143.28:380.38:430.75:406:36New Moon8Sat
9Sun2:134.03:103.19:330.19:240.95:396:37New Moon9Sun
10Mon2:484.14:063.010:24-0.110:031.15:376:38New Moon10Mon
11Tue3:234.15:033.011:13-0.210:421.25:366:39New Moon11Tue
12Wed3:574.16:012.912:01-0.25:356:39Waxing Crescent12Wed
13Thu4:334.06:593.012:48-0.25:336:40Waxing Crescent13Thu
14Fri5:123.97:563.012:041.51:36-0.15:326:41Waxing Crescent14Fri
15Sat5:563.78:513.112:531.72:260.05:306:42Waxing Crescent15Sat
16Sun6:483.59:453.21:511.73:170.15:296:43First Quarter16Sun
17Mon7:543.210:363.32:571.74:080.35:276:44First Quarter17Mon
18Tue9:163.011:223.44:051.64:570.45:266:45First Quarter18Tue
19Wed10:372.85:111.35:430.65:256:46First Quarter19Wed
20Thu12:043.511:46 AM2.86:131.16:240.75:236:47Waxing Gibbous20Thu
21Fri12:393.512:432.77:090.87:010.95:226:48Waxing Gibbous21Fri
22Sat1:093.61:352.78:000.67:341.05:216:49Waxing Gibbous22Sat
23Sun1:323.62:232.78:480.48:061.25:196:50Waxing Gibbous23Sun
24Mon1:503.73:102.79:330.28:391.35:186:51Full Moon24Mon
25Tue2:083.93:592.710:160.09:151.45:176:52Full Moon25Tue
26Wed2:354.04:492.710:59-0.19:561.45:156:52Full Moon26Wed
27Thu3:124.15:412.711:42-0.210:421.45:146:53Waning Gibbous27Thu
28Fri3:544.26:332.812:26-0.35:136:54Waning Gibbous28Fri
29Sat4:424.17:262.91:14-0.35:126:55Waning Gibbous29Sat
30Sun5:363.98:203.012:311.52:06-0.25:116:56Waning Gibbous30Sun
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 transitional phase. Tonight's moon is 34% 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 Third Quarter (34% 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