Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Thursday, June 18, 2026
The tide is currently falling in Rio Vista, CA.
Next low tide : in 3h 50m at 2:04 pm (-0.5 ft)
Next high tide : 8:32 pm (3.3 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 5:43 am
Moon phase : Waxing Crescent (19% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Sep 2022

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu7:343.17:244.22:121.11:361.06:367:36Waxing Crescent1Thu
2Fri8:492.88:104.23:221.02:181.26:377:35First Quarter2Fri
3Sat10:192.69:054.24:420.93:111.56:387:33First Quarter3Sat
4Sun11:452.610:124.25:590.74:171.76:397:32First Quarter4Sun
5Mon12:582.77:060.45:381.86:407:30Waxing Gibbous5Mon
6Tue1:562.98:050.17:001.76:417:28Waxing Gibbous6Tue
7Wed12:454.12:443.18:560.08:131.66:417:27Waxing Gibbous7Wed
8Thu1:504.13:273.39:43-0.19:171.46:427:25Full Moon8Thu
9Fri2:474.14:063.510:250.010:151.26:437:24Full Moon9Fri
10Sat3:404.04:433.711:040.111:091.06:447:22Full Moon10Sat
11Sun4:323.85:193.811:400.36:457:21Full Moon11Sun
12Mon5:253.65:533.912:010.912:140.56:467:19Waning Gibbous12Mon
13Tue6:213.36:274.012:520.912:460.76:477:18Waning Gibbous13Tue
14Wed7:223.17:024.01:460.81:181.06:477:16Waning Gibbous14Wed
15Thu8:292.87:404.02:440.81:531.36:487:14Waning Gibbous15Thu
16Fri9:432.78:243.93:480.72:371.56:497:13Third Quarter16Fri
17Sat10:572.79:183.84:550.63:341.86:507:11Third Quarter17Sat
18Sun12:062.85:590.44:431.96:517:10Third Quarter18Sun
19Mon1:033.06:560.35:531.96:527:08Third Quarter19Mon
20Tue1:513.27:450.26:581.76:537:07Waning Crescent20Tue
21Wed12:413.62:313.38:270.27:551.66:537:05Waning Crescent21Wed
22Thu1:333.63:063.49:050.28:461.46:547:03Waning Crescent22Thu
23Fri2:183.63:353.49:380.39:321.26:557:02Waning Crescent23Fri
24Sat2:593.63:593.510:070.510:151.06:567:00New Moon24Sat
25Sun3:383.64:173.510:330.610:560.96:576:59New Moon25Sun
26Mon4:173.54:323.710:570.711:370.76:586:57New Moon26Mon
27Tue4:593.44:523.911:220.86:596:56Waxing Crescent27Tue
28Wed5:463.25:214.112:200.611:50 AM0.97:006:54Waxing Crescent28Wed
29Thu6:413.05:584.21:080.512:241.07:006:52Waxing Crescent29Thu
30Fri7:482.86:424.22:050.51:051.27:016:51Waxing Crescent30Fri
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 5:18 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 19% 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 (19% 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