Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Monday, June 22, 2026
The tide is currently rising in Rio Vista, CA.
Next low tide : 4:47 pm (0.6 ft)
Next high tide : in 4h 36m at 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 - Apr 2016

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri10:133.35:081.56:360.66:507:30Third Quarter1Fri
2Sat12:393.111:37 AM3.36:161.47:280.66:487:31Waning Crescent2Sat
3Sun1:223.312:523.37:211.28:170.66:477:32Waning Crescent3Sun
4Mon1:593.41:543.48:221.09:020.66:457:33Waning Crescent4Mon
5Tue2:343.62:523.49:200.79:460.76:447:34Waning Crescent5Tue
6Wed3:093.73:473.410:150.410:290.76:427:34New Moon6Wed
7Thu3:453.94:443.311:080.211:110.86:417:35New Moon7Thu
8Fri4:244.05:433.312:010.06:397:36New Moon8Fri
9Sat5:054.16:443.212:54-0.16:387:37Waxing Crescent9Sat
10Sun5:504.17:483.112:391.01:48-0.16:377:38Waxing Crescent10Sun
11Mon6:394.08:523.11:291.12:45-0.16:357:39Waxing Crescent11Mon
12Tue7:333.89:563.22:241.33:440.06:347:40First Quarter12Tue
13Wed8:353.610:583.33:271.44:440.16:327:41First Quarter13Wed
14Thu9:483.311:553.44:351.45:430.16:317:42First Quarter14Thu
15Fri11:053.25:441.36:370.26:297:43First Quarter15Fri
16Sat12:473.612:173.16:491.17:270.36:287:44Waxing Gibbous16Sat
17Sun1:323.71:193.17:490.88:130.46:277:45Waxing Gibbous17Sun
18Mon2:123.82:133.18:430.68:540.66:257:46Waxing Gibbous18Mon
19Tue2:483.83:043.09:330.49:320.76:247:47Waxing Gibbous19Tue
20Wed3:203.83:523.010:190.210:060.96:227:48Full Moon20Wed
21Thu3:493.84:393.011:020.110:371.16:217:48Full Moon21Thu
22Fri4:133.75:262.911:430.011:071.26:207:49Full Moon22Fri
23Sat4:333.76:142.912:230.06:197:50Full Moon23Sat
24Sun4:543.87:022.91:010.06:177:51Waning Gibbous24Sun
25Mon5:223.87:502.912:141.31:390.06:167:52Waning Gibbous25Mon
26Tue5:583.78:392.912:541.42:190.16:157:53Waning Gibbous26Tue
27Wed6:403.69:293.01:411.43:020.16:137:54Waning Gibbous27Wed
28Thu7:293.510:203.12:351.53:520.26:127:55Third Quarter28Thu
29Fri8:273.311:093.23:381.54:450.36:117:56Third Quarter29Fri
30Sat9:383.111:553.34:491.45:390.46:107:57Third Quarter30Sat
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 1:38 pm — 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