38.1450’ N, 121.6920’ W

Rio Vista, CA

72°
H 84°
L 57°
WSW
15mph
Low tide
11:34 am

Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Saturday, September 12, 2026
The tide is currently falling in Rio Vista, CA.
Next low tide : in 2h 04m at 11:34 am (0.6 ft)
Next high tide : 5:18 pm (3.9 ft)
Sunset today : 7:19 pm
Sunrise tomorrow : 6:46 am
Moon phase : New Moon (3% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Jan 1888

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun5:472.94:034.310:561.57:234:57Waning Gibbous1Sun
2Mon6:243.04:524.212:130.011:46 AM1.57:234:58Waning Gibbous2Mon
3Tue7:023.25:474.012:490.012:411.57:234:59Waning Gibbous3Tue
4Wed7:443.46:493.71:290.11:461.47:235:00Third Quarter4Wed
5Thu8:303.58:033.42:130.33:001.37:235:01Third Quarter5Thu
6Fri9:203.79:283.13:010.54:181.17:235:01Third Quarter6Fri
7Sat10:124.010:512.93:530.75:320.87:235:02Third Quarter7Sat
8Sun11:044.24:470.96:410.57:235:03Waning Crescent8Sun
9Mon12:052.811:52 AM4.35:421.17:430.27:235:04Waning Crescent9Mon
10Tue1:102.812:394.46:391.38:39-0.17:235:05Waning Crescent10Tue
11Wed2:092.91:234.57:361.49:29-0.37:235:06New Moon11Wed
12Thu3:052.92:064.58:321.510:16-0.47:235:07New Moon12Thu
13Fri3:583.02:484.49:251.610:59-0.47:225:08New Moon13Fri
14Sat4:483.13:324.210:161.711:39-0.37:225:09New Moon14Sat
15Sun5:353.34:184.111:051.77:225:10Waxing Crescent15Sun
16Mon6:193.45:063.912:17-0.111:54 AM1.77:215:11Waxing Crescent16Mon
17Tue7:013.56:013.612:540.112:461.77:215:12Waxing Crescent17Tue
18Wed7:443.57:043.31:300.31:451.77:215:13Waxing Crescent18Wed
19Thu8:273.68:173.12:070.52:511.67:205:14First Quarter19Thu
20Fri9:113.79:352.92:470.84:021.57:205:16First Quarter20Fri
21Sat9:573.810:492.73:301.05:131.37:195:17First Quarter21Sat
22Sun10:413.911:572.74:161.26:171.07:195:18First Quarter22Sun
23Mon11:234.05:051.47:140.87:185:19Waxing Gibbous23Mon
24Tue12:572.812:014.05:551.58:030.67:175:20Waxing Gibbous24Tue
25Wed1:492.812:354.16:461.68:470.47:175:21Waxing Gibbous25Wed
26Thu2:362.91:104.27:361.79:270.37:165:22Waxing Gibbous26Thu
27Fri3:182.91:464.38:251.710:030.27:155:23Full Moon27Fri
28Sat3:563.02:274.49:121.610:380.27:155:24Full Moon28Sat
29Sun4:303.13:114.49:591.511:120.27:145:26Full Moon29Sun
30Mon5:023.23:594.410:471.411:460.27:135:27Waning Gibbous30Mon
31Tue5:353.44:514.311:361.37:125:28Waning Gibbous31Tue
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 3% 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 New Moon (3% 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