Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Thursday, July 2, 2026
The tide is currently falling in Rio Vista, CA.
Next low tide : in 6h 49m at 1:02 pm (-0.2 ft)
Next high tide : 7:23 pm (3.2 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 5:48 am
Moon phase : Waning Gibbous (93% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Oct 2003

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed9:112.77:484.13:220.22:111.47:026:50First Quarter1Wed
2Thu10:302.78:543.94:320.13:221.67:036:48First Quarter2Thu
3Fri11:422.910:183.65:390.04:461.77:046:47First Quarter3Fri
4Sat12:443.16:39-0.16:071.67:056:45Waxing Gibbous4Sat
5Sun1:343.37:32-0.17:181.47:066:44Waxing Gibbous5Sun
6Mon12:563.52:163.68:19-0.18:191.27:066:42Waxing Gibbous6Mon
7Tue1:533.52:533.79:020.09:141.07:076:41Waxing Gibbous7Tue
8Wed2:443.43:263.89:400.110:030.87:086:39Full Moon8Wed
9Thu3:303.33:563.810:140.310:490.67:096:38Full Moon9Thu
10Fri4:173.24:243.810:450.611:330.57:106:36Full Moon10Fri
11Sat5:043.04:483.911:120.87:116:35Full Moon11Sat
12Sun5:552.95:113.912:150.411:38 AM1.07:126:33Waning Gibbous12Sun
13Mon6:502.75:363.912:580.412:061.27:136:32Waning Gibbous13Mon
14Tue7:502.66:053.91:430.412:401.47:146:31Waning Gibbous14Tue
15Wed8:552.56:413.82:320.41:231.67:156:29Waning Gibbous15Wed
16Thu10:012.67:253.63:270.42:171.77:166:28Third Quarter16Thu
17Fri11:052.78:193.44:250.43:251.87:176:26Third Quarter17Fri
18Sat12:002.85:220.44:411.87:186:25Third Quarter18Sat
19Sun12:463.06:150.45:521.67:196:24Third Quarter19Sun
20Mon1:233.17:010.46:551.47:206:22Waning Crescent20Mon
21Tue12:153.21:533.27:430.47:521.17:216:21Waning Crescent21Tue
22Wed1:183.22:193.48:210.48:460.87:226:20Waning Crescent22Wed
23Thu2:123.32:423.68:570.59:370.47:236:18Waning Crescent23Thu
24Fri3:043.23:073.89:310.710:290.27:246:17New Moon24Fri
25Sat3:563.13:364.110:060.811:21-0.17:256:16New Moon25Sat
26Sun3:513.03:114.39:410.911:14-0.26:265:15New Moon26Sun
27Mon4:502.83:504.310:201.16:275:13Waxing Crescent27Mon
28Tue5:552.74:344.312:09-0.311:05 AM1.36:285:12Waxing Crescent28Tue
29Wed7:042.65:224.11:06-0.311:57 AM1.46:295:11Waxing Crescent29Wed
30Thu8:152.76:193.82:06-0.31:031.66:305:10First Quarter30Thu
31Fri9:222.87:303.53:07-0.32:231.76:315:09First Quarter31Fri
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 4:12 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 93% 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 Waning Gibbous (93% 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