Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Wednesday, July 1, 2026
The tide is currently falling in Rio Vista, CA.
Next low tide : in 6m at 12:33 pm (-0.3 ft)
Next high tide : 6:52 pm (3.1 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 5:47 am
Moon phase : Full Moon (97% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Jan 2005

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat8:083.26:423.31:270.31:491.77:234:57Third Quarter1Sat
2Sun8:393.37:473.01:590.52:571.67:234:58Third Quarter2Sun
3Mon9:103.59:142.72:360.74:141.47:234:59Third Quarter3Mon
4Tue9:443.710:472.53:170.95:301.27:235:00Third Quarter4Tue
5Wed10:243.94:021.26:390.87:235:01Waning Crescent5Wed
6Thu12:072.411:08 AM4.24:491.47:410.47:235:02Waning Crescent6Thu
7Fri1:142.511:55 AM4.45:411.68:360.17:235:03Waning Crescent7Fri
8Sat2:152.512:444.56:411.79:27-0.27:235:04Waning Crescent8Sat
9Sun3:112.61:354.67:501.810:14-0.47:235:05New Moon9Sun
10Mon4:032.82:284.68:581.810:58-0.47:235:06New Moon10Mon
11Tue4:512.93:224.510:011.711:41-0.47:225:07New Moon11Tue
12Wed5:373.14:194.311:021.67:225:08Waxing Crescent12Wed
13Thu6:213.35:194.012:21-0.212:011.57:225:09Waxing Crescent13Thu
14Fri7:053.66:233.71:02-0.11:041.47:215:10Waxing Crescent14Fri
15Sat7:493.87:333.31:420.22:121.47:215:11First Quarter15Sat
16Sun8:353.98:493.02:230.53:251.27:215:12First Quarter16Sun
17Mon9:224.110:082.83:050.74:401.07:205:13First Quarter17Mon
18Tue10:094.211:232.73:501.05:510.77:205:14First Quarter18Tue
19Wed10:564.24:381.36:530.47:195:15Waxing Gibbous19Wed
20Thu12:312.711:40 AM4.35:281.57:480.17:195:16Waxing Gibbous20Thu
21Fri1:312.812:224.36:201.78:350.07:185:17Waxing Gibbous21Fri
22Sat2:232.91:024.37:131.89:18-0.17:185:18Waxing Gibbous22Sat
23Sun3:113.01:404.38:041.99:55-0.17:175:19Full Moon23Sun
24Mon3:533.12:174.38:521.810:290.07:175:20Full Moon24Mon
25Tue4:323.12:554.29:381.810:590.17:165:22Full Moon25Tue
26Wed5:063.23:324.110:201.711:260.27:155:23Full Moon26Wed
27Thu5:353.34:124.011:011.611:500.37:155:24Waning Gibbous27Thu
28Fri6:003.34:533.911:421.67:145:25Waning Gibbous28Fri
29Sat6:213.45:383.712:130.512:251.57:135:26Waning Gibbous29Sat
30Sun6:423.66:303.412:390.61:161.57:125:27Waning Gibbous30Sun
31Mon7:093.77:353.11:100.82:211.47:115:28Third Quarter31Mon
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 3:42 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 97% 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 Full Moon (97% 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