Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Monday, June 22, 2026
The tide is currently falling in Rio Vista, CA.
Next low tide : in 6h 34m at 5:23 am (1.1 ft)
Next high tide : 10:30 am (2.6 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 5:44 am
Moon phase : First Quarter (49% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Oct 2016

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:223.44:423.810:590.611:420.57:036:49New Moon1Sat
2Sun5:083.35:083.811:270.87:046:47New Moon2Sun
3Mon5:563.15:323.812:240.511:53 AM1.07:046:46Waxing Crescent3Mon
4Tue6:473.05:563.81:070.512:211.17:056:44Waxing Crescent4Tue
5Wed7:422.96:243.71:510.512:561.27:066:43Waxing Crescent5Wed
6Thu8:412.87:013.62:400.51:391.47:076:41Waxing Crescent6Thu
7Fri9:432.87:463.53:340.62:321.57:086:40First Quarter7Fri
8Sat10:452.88:413.34:320.63:371.67:096:38First Quarter8Sat
9Sun11:432.99:563.25:290.64:491.67:106:37First Quarter9Sun
10Mon12:323.06:220.56:001.57:116:35First Quarter10Mon
11Tue1:133.27:110.57:041.37:126:34Waxing Gibbous11Tue
12Wed12:373.21:483.37:560.48:021.07:136:32Waxing Gibbous12Wed
13Thu1:363.32:193.58:380.58:570.77:146:31Waxing Gibbous13Thu
14Fri2:283.32:493.79:180.59:500.57:156:29Full Moon14Fri
15Sat3:193.33:213.99:580.610:420.27:166:28Full Moon15Sat
16Sun4:123.23:564.110:380.711:330.17:176:27Full Moon16Sun
17Mon5:073.14:354.211:190.87:186:25Waning Gibbous17Mon
18Tue6:063.05:184.212:26-0.112:030.97:196:24Waning Gibbous18Tue
19Wed7:102.96:064.11:21-0.112:511.07:206:23Waning Gibbous19Wed
20Thu8:182.96:594.02:18-0.11:471.27:216:21Waning Gibbous20Thu
21Fri9:262.98:003.73:180.02:511.37:226:20Third Quarter21Fri
22Sat10:333.09:153.44:200.04:031.47:236:19Third Quarter22Sat
23Sun11:343.210:373.25:190.05:161.37:246:17Third Quarter23Sun
24Mon12:283.56:150.06:251.17:256:16Waning Crescent24Mon
25Tue1:153.77:060.17:270.87:266:15Waning Crescent25Tue
26Wed12:563.11:563.87:510.28:230.67:276:14Waning Crescent26Wed
27Thu1:513.12:323.98:330.39:140.47:286:12Waning Crescent27Thu
28Fri2:413.13:043.99:100.510:010.27:296:11New Moon28Fri
29Sat3:283.03:333.99:440.710:450.17:306:10New Moon29Sat
30Sun4:142.93:593.910:150.911:280.07:316:09New Moon30Sun
31Mon5:012.94:213.810:441.07:326:08New Moon31Mon
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 7:56 am — 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 neap phase. Tonight's moon is 49% 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 minimum.

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 First Quarter (49% illuminated). This places Rio Vista, CA in a neap tide cycle, so tidal ranges are near their weekly minimum 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