38.1450’ N, 121.6920’ W

Rio Vista, CA

85°
H 87°
L 55°
WSW
8mph
High tide
6:49 pm

Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Tuesday, September 15, 2026
The tide is currently rising in Rio Vista, CA.
Next low tide (tomorrow) : 2:54 am (0.6 ft)
Next high tide : in 4h 52m at 6:49 pm (4.0 ft)
Sunset today : 7:14 pm
Sunrise tomorrow : 6:48 am
Moon phase : Waxing Crescent (22% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Dec 1880

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed3:012.51:404.47:531.410:14-0.47:124:54New Moon1Wed
2Thu3:552.52:254.58:501.411:01-0.57:134:54New Moon2Thu
3Fri4:492.63:144.49:501.411:48-0.67:144:54Waxing Crescent3Fri
4Sat5:432.74:064.310:511.47:154:54Waxing Crescent4Sat
5Sun6:352.95:034.012:34-0.511:55 AM1.47:164:53Waxing Crescent5Sun
6Mon7:273.16:083.61:20-0.41:031.47:164:53Waxing Crescent6Mon
7Tue8:193.47:253.22:08-0.22:181.37:174:53First Quarter7Tue
8Wed9:113.68:522.92:560.03:351.27:184:54First Quarter8Wed
9Thu10:013.810:152.73:450.34:500.97:194:54First Quarter9Thu
10Fri10:494.011:302.64:330.55:590.67:204:54Waxing Gibbous10Fri
11Sat11:334.15:200.77:010.27:204:54Waxing Gibbous11Sat
12Sun12:352.612:134.26:060.97:560.07:214:54Waxing Gibbous12Sun
13Mon1:332.612:494.36:511.28:45-0.37:224:54Waxing Gibbous13Mon
14Tue2:272.71:234.37:361.39:29-0.47:234:55Full Moon14Tue
15Wed3:172.71:564.38:201.510:10-0.47:234:55Full Moon15Wed
16Thu4:052.82:284.29:031.610:47-0.47:244:55Full Moon16Thu
17Fri4:502.93:024.19:471.611:21-0.37:254:56Full Moon17Fri
18Sat5:332.93:384.110:301.611:53-0.27:254:56Waning Gibbous18Sat
19Sun6:123.04:173.911:141.67:264:56Waning Gibbous19Sun
20Mon6:493.14:593.712:210.012:001.67:264:57Waning Gibbous20Mon
21Tue7:233.25:453.512:490.112:501.67:274:57Waning Gibbous21Tue
22Wed7:573.36:383.21:170.31:461.57:274:58Third Quarter22Wed
23Thu8:293.47:422.91:490.42:531.57:284:59Third Quarter23Thu
24Fri9:023.59:062.62:260.64:061.37:284:59Third Quarter24Fri
25Sat9:373.710:362.53:080.85:181.07:285:00Third Quarter25Sat
26Sun10:173.911:532.43:541.06:250.77:295:00Waning Crescent26Sun
27Mon11:014.14:421.27:260.47:295:01Waning Crescent27Mon
28Tue12:582.411:48 AM4.35:351.48:210.17:295:02Waning Crescent28Tue
29Wed1:562.512:374.56:341.59:12-0.27:305:02Waning Crescent29Wed
30Thu2:502.61:274.67:401.69:59-0.37:305:03New Moon30Thu
31Fri3:412.72:184.68:481.67:305:04New Moon31Fri
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 22% 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 (22% 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