Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Thursday, July 16, 2026
The tide is currently rising in Rio Vista, CA.
Next low tide (tomorrow) : 12:43 am (1.6 ft)
Next high tide : in 2h 14m at 7:07 pm (3.4 ft)
Sunset today : 8:28 pm
Sunrise tomorrow : 5:56 am
Moon phase : Waxing Crescent (8% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Jun 1984

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri4:174.37:272.712:57-0.45:458:24Waxing Crescent1Fri
2Sat5:034.38:122.812:011.71:37-0.45:448:24Waxing Crescent2Sat
3Sun5:534.28:563.012:561.72:19-0.45:448:25Waxing Crescent3Sun
4Mon6:503.99:403.21:571.63:04-0.35:448:26Waxing Crescent4Mon
5Tue7:543.610:253.43:051.53:52-0.15:438:26First Quarter5Tue
6Wed9:103.311:113.64:181.34:410.15:438:27First Quarter6Wed
7Thu10:363.011:553.95:331.15:300.35:438:27First Quarter7Thu
8Fri11:592.76:450.76:180.65:438:28Waxing Gibbous8Fri
9Sat12:384.11:132.67:520.47:050.85:438:28Waxing Gibbous9Sat
10Sun1:184.32:202.68:540.07:521.15:438:29Waxing Gibbous10Sun
11Mon1:564.43:232.59:51-0.38:391.35:438:29Waxing Gibbous11Mon
12Tue2:334.44:252.610:43-0.59:291.65:428:30Full Moon12Tue
13Wed3:084.45:262.611:31-0.710:191.85:428:30Full Moon13Wed
14Thu3:434.36:232.812:16-0.85:438:31Full Moon14Thu
15Fri4:214.27:142.912:57-0.75:438:31Waning Gibbous15Fri
16Sat5:004.18:003.11:37-0.65:438:31Waning Gibbous16Sat
17Sun5:443.88:433.312:502.02:15-0.55:438:32Waning Gibbous17Sun
18Mon6:333.69:253.41:452.02:52-0.35:438:32Waning Gibbous18Mon
19Tue7:293.310:063.52:451.93:300.05:438:32Third Quarter19Tue
20Wed8:412.910:483.63:531.84:070.35:438:33Third Quarter20Wed
21Thu10:102.611:273.75:041.64:460.55:438:33Third Quarter21Thu
22Fri11:352.46:151.35:240.85:448:33Third Quarter22Fri
23Sat12:043.812:502.37:211.06:021.15:448:33Waning Crescent23Sat
24Sun12:363.91:562.38:210.76:421.35:448:33Waning Crescent24Sun
25Mon1:044.02:572.39:130.47:241.55:458:33Waning Crescent25Mon
26Tue1:304.23:542.410:000.28:111.75:458:33Waning Crescent26Tue
27Wed1:594.34:482.510:430.09:051.85:458:33New Moon27Wed
28Thu2:344.45:382.611:23-0.210:011.95:468:33New Moon28Thu
29Fri3:164.56:222.712:01-0.35:468:33New Moon29Fri
30Sat4:024.57:012.912:39-0.45:478:33New Moon30Sat
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 9:55 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 spring phase. Tonight's moon is 8% 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 Waxing Crescent (8% 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