38.1450’ N, 121.6920’ W

Rio Vista, CA

64°
H -°
L 58°
WSW
10mph
Low tide
5:08 am

Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Friday, September 4, 2026
The tide is currently falling in Rio Vista, CA.
Next low tide : in 7h 02m at 5:08 am (0.7 ft)
Next high tide : 11:05 am (2.5 ft)
Sunset today : 7:33 pm
Sunrise tomorrow : 6:38 am
Moon phase : Third Quarter (56% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Jan 1909

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri11:184.35:060.76:480.57:234:57Waxing Gibbous1Fri
2Sat12:182.712:004.45:541.07:480.17:234:58Waxing Gibbous2Sat
3Sun1:242.712:424.56:421.28:42-0.17:234:59Waxing Gibbous3Sun
4Mon2:182.71:184.57:361.49:30-0.37:235:00Full Moon4Mon
5Tue3:182.81:544.58:241.610:18-0.47:235:00Full Moon5Tue
6Wed4:062.92:304.49:121.710:54-0.37:235:01Full Moon6Wed
7Thu5:003.03:124.310:001.811:30-0.37:235:02Full Moon7Thu
8Fri5:423.13:484.210:421.87:235:03Waning Gibbous8Fri
9Sat6:243.24:364.012:06-0.111:30 AM1.87:235:04Waning Gibbous9Sat
10Sun7:063.25:183.812:420.012:181.87:235:05Waning Gibbous10Sun
11Mon7:423.36:123.51:120.21:121.87:235:06Waning Gibbous11Mon
12Tue8:243.47:123.21:420.42:121.77:235:07Third Quarter12Tue
13Wed9:003.58:302.92:120.63:241.67:225:08Third Quarter13Wed
14Thu9:363.69:542.72:480.94:361.57:225:09Third Quarter14Thu
15Fri10:123.711:122.63:301.15:421.27:225:10Third Quarter15Fri
16Sat10:483.84:121.36:480.97:215:11Waning Crescent16Sat
17Sun12:182.611:24 AM4.05:001.57:420.67:215:12Waning Crescent17Sun
18Mon1:182.612:004.15:541.68:300.37:215:13Waning Crescent18Mon
19Tue2:122.712:424.36:481.79:180.17:205:14Waning Crescent19Tue
20Wed3:002.71:244.57:421.810:000.07:205:15New Moon20Wed
21Thu3:422.82:124.58:421.710:42-0.17:195:17New Moon21Thu
22Fri4:243.03:004.69:421.611:18-0.17:195:18New Moon22Fri
23Sat5:063.13:544.510:361.57:185:19Waxing Crescent23Sat
24Sun5:483.34:544.312:00-0.111:36 AM1.47:175:20Waxing Crescent24Sun
25Mon6:303.55:544.012:360.012:361.37:175:21Waxing Crescent25Mon
26Tue7:123.87:063.61:180.21:421.27:165:22Waxing Crescent26Tue
27Wed8:003.98:183.22:000.52:541.27:155:23First Quarter27Wed
28Thu8:544.19:423.02:480.74:121.07:155:24First Quarter28Thu
29Fri9:484.211:002.83:361.05:240.87:145:25First Quarter29Fri
30Sat10:364.34:301.26:360.57:135:27Waxing Gibbous30Sat
31Sun12:122.811:30 AM4.35:301.47:360.27:125:28Waxing Gibbous31Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415316)

Common Questions About Rio Vista, CA Tides

Collapse All
Is this week a spring tide or neap tide in Rio Vista, CA?

Rio Vista, CA is currently in a neap phase. Tonight's moon is 56% 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 minimum.

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 (56% illuminated). This places Rio Vista, CA in a neap tide cycle, so tidal ranges are near their weekly minimum 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