Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Thursday, June 18, 2026
The tide is currently rising in Rio Vista, CA.
Next low tide (tomorrow) : 1:56 am (1.6 ft)
Next high tide : in 5h 45m at 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 - May 2022

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun4:074.05:532.711:59-0.211:121.36:097:57New Moon1Sun
2Mon4:334.06:492.712:42-0.36:087:58New Moon2Mon
3Tue5:014.07:442.81:23-0.36:077:59Waxing Crescent3Tue
4Wed5:334.08:372.812:241.62:05-0.26:068:00Waxing Crescent4Wed
5Thu6:103.89:302.91:091.72:47-0.26:058:01Waxing Crescent5Thu
6Fri6:533.610:213.02:021.83:320.06:048:02Waxing Crescent6Fri
7Sat7:433.411:093.13:031.84:180.16:038:03First Quarter7Sat
8Sun8:433.111:533.24:111.75:050.26:028:04First Quarter8Sun
9Mon10:002.85:191.65:490.46:018:05First Quarter9Mon
10Tue12:323.311:28 AM2.76:241.36:310.56:008:06First Quarter10Tue
11Wed1:043.412:412.77:241.07:090.75:598:07Waxing Gibbous11Wed
12Thu1:303.51:442.68:200.77:460.95:588:08Waxing Gibbous12Thu
13Fri1:523.62:412.69:140.48:221.15:578:08Waxing Gibbous13Fri
14Sat2:143.83:372.610:060.19:011.25:568:09Full Moon14Sat
15Sun2:424.14:352.510:56-0.29:441.45:558:10Full Moon15Sun
16Mon3:184.35:362.511:46-0.410:331.55:548:11Full Moon16Mon
17Tue3:594.46:382.612:36-0.65:538:12Waning Gibbous17Tue
18Wed4:444.47:392.71:26-0.75:538:13Waning Gibbous18Wed
19Thu5:354.28:372.812:241.62:17-0.65:528:14Waning Gibbous19Thu
20Fri6:304.09:323.01:281.73:10-0.55:518:14Waning Gibbous20Fri
21Sat7:343.610:253.32:411.74:03-0.45:518:15Third Quarter21Sat
22Sun8:543.211:153.53:591.54:55-0.25:508:16Third Quarter22Sun
23Mon10:262.95:161.35:450.05:498:17Third Quarter23Mon
24Tue12:033.711:51 AM2.76:291.06:330.25:498:18Waning Crescent24Tue
25Wed12:463.91:032.67:360.77:170.45:488:19Waning Crescent25Wed
26Thu1:254.12:062.68:360.38:000.75:478:19Waning Crescent26Thu
27Fri1:594.23:042.59:300.08:401.05:478:20Waning Crescent27Fri
28Sat2:314.24:002.510:19-0.29:181.35:468:21New Moon28Sat
29Sun3:004.24:572.511:05-0.49:561.55:468:22New Moon29Sun
30Mon3:274.25:522.611:47-0.510:351.75:468:22New Moon30Mon
31Tue3:554.26:452.712:26-0.55:458:23New Moon31Tue
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 11:14 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