Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Monday, June 22, 2026
The tide is currently falling in Rio Vista, CA.
Next low tide : in 5h 16m at 5:23 am (1.1 ft)
Next high tide : 10:30 am (2.6 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 5:44 am
Moon phase : First Quarter (59% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Dec 2032

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed2:482.51:384.07:541.39:54-0.17:054:47New Moon1Wed
2Thu3:332.62:064.18:361.310:33-0.27:064:46New Moon2Thu
3Fri4:172.62:424.29:211.411:12-0.27:064:46New Moon3Fri
4Sat5:012.73:254.210:091.411:52-0.37:074:46Waxing Crescent4Sat
5Sun5:452.84:124.111:001.37:084:46Waxing Crescent5Sun
6Mon6:313.05:054.012:33-0.211:56 AM1.37:094:46Waxing Crescent6Mon
7Tue7:193.16:053.71:16-0.11:001.37:104:46Waxing Crescent7Tue
8Wed8:093.37:163.32:030.02:141.27:114:46First Quarter8Wed
9Thu9:023.58:453.02:540.13:331.17:124:46First Quarter9Thu
10Fri9:553.810:142.83:460.34:510.87:124:47First Quarter10Fri
11Sat10:464.011:322.74:390.56:020.57:134:47Waxing Gibbous11Sat
12Sun11:344.25:320.77:060.27:144:47Waxing Gibbous12Sun
13Mon12:392.712:194.36:240.88:04-0.17:154:47Waxing Gibbous13Mon
14Tue1:392.71:014.47:151.08:56-0.37:154:47Waxing Gibbous14Tue
15Wed2:352.81:404.48:051.29:44-0.47:164:48Full Moon15Wed
16Thu3:282.92:194.38:551.310:28-0.57:174:48Full Moon16Thu
17Fri4:192.92:574.29:431.411:09-0.47:174:48Full Moon17Fri
18Sat5:083.03:374.110:291.511:48-0.37:184:49Waning Gibbous18Sat
19Sun5:553.14:203.911:161.57:184:49Waning Gibbous19Sun
20Mon6:393.25:053.712:24-0.212:041.67:194:50Waning Gibbous20Mon
21Tue7:233.35:563.512:580.012:571.57:194:50Waning Gibbous21Tue
22Wed8:063.46:563.21:320.21:561.57:204:51Third Quarter22Wed
23Thu8:503.58:092.92:070.43:021.57:204:51Third Quarter23Thu
24Fri9:353.59:292.62:450.64:121.37:214:52Third Quarter24Fri
25Sat10:193.610:452.53:270.85:191.17:214:52Third Quarter25Sat
26Sun10:593.711:522.54:111.06:210.87:214:53Third Quarter26Sun
27Mon11:353.84:571.27:160.67:224:54Waning Crescent27Mon
28Tue12:502.512:063.95:441.38:060.47:224:54Waning Crescent28Tue
29Wed1:422.612:364.06:321.58:510.27:224:55Waning Crescent29Wed
30Thu2:292.61:094.27:231.59:330.07:224:56New Moon30Thu
31Fri3:122.71:474.38:151.57:234:57New Moon31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415316)

Common Questions About Rio Vista, CA Tides

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What time does the tide turn (slack tide) in Rio Vista, CA today?

Slack tide in Rio Vista, CA is approximately 7:56 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

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 59% 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 First Quarter (59% 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