38.1450’ N, 121.6920’ W

Rio Vista, CA

60°
H -°
L 55°
SW
15mph
Low tide
2:54 am

Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently falling in Rio Vista, CA.
Next low tide : in 1h 07m at 2:54 am (0.6 ft)
Next high tide : 8:40 am (2.7 ft)
Sunset today : 7:13 pm
Sunrise tomorrow : 6:49 am
Moon phase : Waxing Crescent (31% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Jan 1880

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu6:293.25:103.912:130.112:061.57:305:04Waning Gibbous1Thu
2Fri6:573.36:033.612:410.212:591.47:305:05Waning Gibbous2Fri
3Sat7:283.57:043.31:140.42:031.47:305:06Third Quarter3Sat
4Sun8:073.78:212.91:520.63:201.27:305:07Third Quarter4Sun
5Mon8:533.99:542.62:360.84:401.07:305:08Third Quarter5Mon
6Tue9:454.111:202.53:261.05:550.77:305:08Third Quarter6Tue
7Wed10:414.34:221.27:020.37:305:09Waning Crescent7Wed
8Thu12:332.611:36 AM4.45:231.48:010.07:305:10Waning Crescent8Thu
9Fri1:362.612:304.56:311.68:54-0.27:305:11Waning Crescent9Fri
10Sat2:332.81:234.57:411.69:42-0.47:305:12New Moon10Sat
11Sun3:242.92:144.58:461.610:27-0.47:305:13New Moon11Sun
12Mon4:133.13:054.39:451.611:08-0.37:305:14New Moon12Mon
13Tue4:593.33:574.110:411.511:47-0.27:295:15Waxing Crescent13Tue
14Wed5:423.54:503.911:351.47:295:16Waxing Crescent14Wed
15Thu6:243.65:483.612:250.012:311.47:295:17Waxing Crescent15Thu
16Fri7:053.76:503.31:010.21:301.47:285:18Waxing Crescent16Fri
17Sat7:473.88:003.01:370.52:351.37:285:19First Quarter17Sat
18Sun8:313.99:162.82:150.83:451.27:285:20First Quarter18Sun
19Mon9:174.010:322.72:571.14:550.97:275:21First Quarter19Mon
20Tue10:064.011:422.73:441.36:010.77:275:23First Quarter20Tue
21Wed10:554.14:361.56:590.57:265:24Waxing Gibbous21Wed
22Thu12:432.811:41 AM4.15:311.67:490.37:265:25Waxing Gibbous22Thu
23Fri1:362.912:254.16:261.78:320.27:255:26Waxing Gibbous23Fri
24Sat2:233.01:044.27:201.79:110.27:245:27Waxing Gibbous24Sat
25Sun3:043.11:414.28:101.79:450.27:245:28Full Moon25Sun
26Mon3:413.12:174.28:571.610:160.37:235:29Full Moon26Mon
27Tue4:133.22:554.29:411.510:450.37:225:30Full Moon27Tue
28Wed4:393.23:354.110:231.411:110.47:225:31Full Moon28Wed
29Thu5:023.44:184.011:061.311:370.57:215:33Waning Gibbous29Thu
30Fri5:253.55:063.911:511.27:205:34Waning Gibbous30Fri
31Sat5:523.86:003.612:050.612:431.27:195:35Waning Gibbous31Sat
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 31% 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 Waxing Crescent (31% 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