Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Thursday, July 16, 2026
The tide is currently falling in Rio Vista, CA.
Next low tide (tomorrow) : in 30m at 11:45 pm (1.7 ft)
Next high tide : 4:49 am (4.3 ft)
Sunset today : 8:29 pm
Sunrise tomorrow : 5:56 am
Moon phase : New Moon (3% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Jul 2063

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:413.69:223.82:401.32:590.15:478:33First Quarter1Sun
2Mon8:543.110:084.13:511.23:390.45:488:33First Quarter2Mon
3Tue10:142.810:554.35:050.94:220.75:488:33First Quarter3Tue
4Wed11:362.511:424.46:190.65:071.05:498:33First Quarter4Wed
5Thu12:532.47:270.35:551.35:498:33Waxing Gibbous5Thu
6Fri12:274.52:032.58:290.06:471.65:508:33Waxing Gibbous6Fri
7Sat1:104.53:062.69:23-0.37:441.85:518:32Waxing Gibbous7Sat
8Sun1:504.54:022.710:10-0.58:432.05:518:32Full Moon8Sun
9Mon2:294.44:532.910:53-0.69:392.15:528:32Full Moon9Mon
10Tue3:074.35:373.011:32-0.510:312.15:528:31Full Moon10Tue
11Wed3:464.26:173.212:07-0.55:538:31Full Moon11Wed
12Thu4:264.16:533.312:39-0.35:548:30Waning Gibbous12Thu
13Fri5:083.97:263.412:051.91:08-0.15:548:30Waning Gibbous13Fri
14Sat5:513.77:583.612:501.81:350.15:558:30Waning Gibbous14Sat
15Sun6:373.48:283.71:381.72:000.35:568:29Waning Gibbous15Sun
16Mon7:273.18:573.82:321.72:270.55:578:28Third Quarter16Mon
17Tue8:302.79:273.93:361.62:580.85:578:28Third Quarter17Tue
18Wed10:032.49:594.04:511.53:341.15:588:27Third Quarter18Wed
19Thu11:412.210:364.16:091.34:161.35:598:27Third Quarter19Thu
20Fri1:042.27:201.05:051.66:008:26Waning Crescent20Fri
21Sat2:142.38:200.66:001.86:008:25Waning Crescent21Sat
22Sun12:104.43:122.59:110.37:062.06:018:25Waning Crescent22Sun
23Mon1:024.54:012.69:570.18:192.06:028:24Waning Crescent23Mon
24Tue1:564.64:422.810:39-0.19:281.96:038:23New Moon24Tue
25Wed2:504.65:203.011:19-0.210:301.76:048:22New Moon25Wed
26Thu3:444.65:563.211:57-0.211:281.56:048:21New Moon26Thu
27Fri4:394.46:323.412:33-0.16:058:21Waxing Crescent27Fri
28Sat5:364.27:103.712:251.31:080.16:068:20Waxing Crescent28Sat
29Sun6:353.97:504.01:241.21:430.36:078:19Waxing Crescent29Sun
30Mon7:393.58:324.22:281.12:190.56:088:18First Quarter30Mon
31Tue8:513.19:194.33:371.02:570.86:098:17First Quarter31Tue
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 2:17 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 spring phase. Tonight's moon is 3% 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 maximum.

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 New Moon (3% illuminated). This places Rio Vista, CA in a spring tide cycle, so tidal ranges are near their weekly maximum 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