Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Friday, June 19, 2026
The tide is currently falling in Rio Vista, CA.
Next low tide : in 6h 59m at 2:45 pm (-0.3 ft)
Next high tide : 9:15 pm (3.6 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 5:43 am
Moon phase : Waxing Crescent (28% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - May 2028

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon8:293.511:023.23:361.44:350.16:097:58First Quarter1Mon
2Tue9:493.211:493.44:501.25:280.26:077:59First Quarter2Tue
3Wed11:173.06:040.96:190.46:068:00First Quarter3Wed
4Thu12:323.712:362.97:130.67:080.66:058:01Waxing Gibbous4Thu
5Fri1:123.91:452.88:180.27:540.86:048:02Waxing Gibbous5Fri
6Sat1:504.12:482.79:18-0.18:391.06:038:03Waxing Gibbous6Sat
7Sun2:274.23:482.610:15-0.49:241.26:028:03Full Moon7Sun
8Mon3:024.24:492.611:07-0.610:091.46:018:04Full Moon8Mon
9Tue3:384.25:502.711:56-0.710:551.66:008:05Full Moon9Tue
10Wed4:144.26:492.712:43-0.75:598:06Waning Gibbous10Wed
11Thu4:524.07:432.91:28-0.75:588:07Waning Gibbous11Thu
12Fri5:343.88:343.012:331.82:12-0.65:578:08Waning Gibbous12Fri
13Sat6:203.69:213.21:281.82:55-0.45:568:09Waning Gibbous13Sat
14Sun7:143.310:083.32:281.83:39-0.25:558:10Third Quarter14Sun
15Mon8:243.010:533.43:351.74:230.05:558:11Third Quarter15Mon
16Tue9:522.711:363.64:461.55:070.35:548:12Third Quarter16Tue
17Wed11:192.55:551.35:480.55:538:12Third Quarter17Wed
18Thu12:163.712:332.47:011.06:280.75:528:13Waning Crescent18Thu
19Fri12:523.81:382.38:010.77:051.05:528:14Waning Crescent19Fri
20Sat1:223.82:372.38:550.47:421.25:518:15Waning Crescent20Sat
21Sun1:483.93:322.39:430.28:201.45:508:16Waning Crescent21Sun
22Mon2:104.04:252.310:280.09:011.55:498:17New Moon22Mon
23Tue2:344.15:182.411:09-0.29:471.65:498:17New Moon23Tue
24Wed3:064.26:072.511:49-0.310:371.75:488:18New Moon24Wed
25Thu3:454.36:522.612:27-0.45:488:19New Moon25Thu
26Fri4:294.37:332.81:05-0.45:478:20Waxing Crescent26Fri
27Sat5:194.28:142.912:211.61:44-0.45:478:20Waxing Crescent27Sat
28Sun6:134.08:553.11:181.52:25-0.35:468:21Waxing Crescent28Sun
29Mon7:133.79:373.32:201.43:08-0.25:468:22First Quarter29Mon
30Tue8:223.310:223.63:291.33:540.05:458:23First Quarter30Tue
31Wed9:413.011:083.84:431.04:410.25:458:23First Quarter31Wed
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 6:00 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 transitional phase. Tonight's moon is 28% 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 (28% 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