38.1450’ N, 121.6920’ W

Rio Vista, CA

65°
H 81°
L 55°
WSW
10mph
High tide
2:19 pm

Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Tuesday, September 22, 2026
The tide is currently rising in Rio Vista, CA.
Next low tide : 7:55 pm (1.5 ft)
Next high tide : in 3h 51m at 2:19 pm (3.3 ft)
Sunset today : 7:03 pm
Sunrise tomorrow : 6:54 am
Moon phase : Waxing Gibbous (84% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Apr 1871

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:063.212:063.36:421.47:410.65:586:36Waxing Gibbous1Sat
2Sun1:393.21:003.47:361.28:190.65:576:37Waxing Gibbous2Sun
3Mon2:063.31:513.58:270.98:550.75:556:38Waxing Gibbous3Mon
4Tue2:303.42:403.59:150.79:290.85:546:39Full Moon4Tue
5Wed2:543.63:313.410:030.410:040.95:526:40Full Moon5Wed
6Thu3:223.84:263.310:520.210:391.05:516:41Full Moon6Thu
7Fri3:564.05:243.211:440.111:171.15:496:42Waning Gibbous7Fri
8Sat4:364.16:273.112:380.05:486:43Waning Gibbous8Sat
9Sun5:214.17:343.012:011.21:380.05:466:44Waning Gibbous9Sun
10Mon6:124.08:442.912:521.42:410.05:456:44Third Quarter10Mon
11Tue7:113.89:523.01:551.53:460.05:436:45Third Quarter11Tue
12Wed8:243.510:553.23:111.64:490.05:426:46Third Quarter12Wed
13Thu9:523.311:503.44:301.55:470.05:406:47Third Quarter13Thu
14Fri11:153.25:431.36:390.05:396:48Waning Crescent14Fri
15Sat12:373.612:233.26:491.17:270.15:386:49Waning Crescent15Sat
16Sun1:193.71:213.27:480.88:100.35:366:50Waning Crescent16Sun
17Mon1:563.82:133.18:410.68:490.55:356:51New Moon17Mon
18Tue2:293.83:033.19:290.49:250.75:336:52New Moon18Tue
19Wed3:003.83:533.010:140.29:580.95:326:53New Moon19Wed
20Thu3:273.94:442.910:570.110:291.15:316:54New Moon20Thu
21Fri3:533.95:372.911:380.111:001.25:296:55New Moon21Fri
22Sat4:183.96:312.812:190.05:286:56Waxing Crescent22Sat
23Sun4:463.97:262.81:010.05:276:56Waxing Crescent23Sun
24Mon5:203.88:212.912:151.51:440.15:256:57Waxing Crescent24Mon
25Tue6:003.69:172.91:031.62:320.25:246:58Waxing Crescent25Tue
26Wed6:473.410:103.02:001.73:230.35:236:59First Quarter26Wed
27Thu7:443.210:593.13:061.74:150.35:227:00First Quarter27Thu
28Fri8:553.011:403.24:141.65:050.45:207:01First Quarter28Fri
29Sat10:202.95:201.45:520.55:197:02First Quarter29Sat
30Sun12:153.311:36 AM2.96:211.16:360.65:187:03Waxing 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 spring phase. Tonight's moon is 84% 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 (84% 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