Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Sunday, July 12, 2026
The tide is currently rising in Rio Vista, CA.
Next low tide (tomorrow) : 10:49 am (-0.4 ft)
Next high tide (tomorrow) : in 5h 09m at 2:06 am (4.7 ft)
Sunset today : 8:30 pm
Sunrise tomorrow : 5:54 am
Moon phase : Waning Crescent (4% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Jan 2061

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat10:484.34:361.06:540.57:234:58Waxing Gibbous1Sat
2Sun12:242.511:36 AM4.55:301.37:540.17:234:58Waxing Gibbous2Sun
3Mon1:362.512:244.66:241.58:54-0.27:234:59Waxing Gibbous3Mon
4Tue2:362.61:124.67:241.69:42-0.47:235:00Full Moon4Tue
5Wed3:362.72:004.68:301.710:30-0.57:235:01Full Moon5Wed
6Thu4:302.82:484.59:301.811:12-0.47:235:02Full Moon6Thu
7Fri5:243.03:364.310:241.811:54-0.37:235:03Waning Gibbous7Fri
8Sat6:063.24:244.111:241.87:235:04Waning Gibbous8Sat
9Sun6:483.35:183.812:30-0.212:181.77:225:05Waning Gibbous9Sun
10Mon7:303.56:183.51:060.11:121.67:225:06Waning Gibbous10Mon
11Tue8:123.67:243.21:420.32:181.67:225:07Third Quarter11Tue
12Wed8:543.78:422.92:180.63:241.47:225:08Third Quarter12Wed
13Thu9:363.810:002.72:540.94:361.27:225:09Third Quarter13Thu
14Fri10:183.911:122.63:301.15:420.97:215:10Third Quarter14Fri
15Sat11:004.04:181.46:480.67:215:11Waning Crescent15Sat
16Sun12:242.611:42 AM4.15:001.67:420.37:205:12Waning Crescent16Sun
17Mon1:182.712:184.15:541.78:300.17:205:13Waning Crescent17Mon
18Tue2:122.712:484.26:421.89:120.07:205:14Waning Crescent18Tue
19Wed3:002.81:244.27:361.99:480.07:195:15New Moon19Wed
20Thu3:422.92:004.28:241.910:240.07:195:16New Moon20Thu
21Fri4:183.02:364.39:121.810:540.07:185:17New Moon21Fri
22Sat4:483.13:184.310:001.711:240.17:175:19New Moon22Sat
23Sun5:183.24:004.210:421.511:540.27:175:20Waxing Crescent23Sun
24Mon5:423.34:544.111:301.47:165:21Waxing Crescent24Mon
25Tue6:123.55:483.812:240.312:181.37:155:22Waxing Crescent25Tue
26Wed6:483.86:483.51:000.51:241.37:155:23Waxing Crescent26Wed
27Thu7:304.08:063.11:360.72:421.27:145:24First Quarter27Thu
28Fri8:184.19:362.72:180.94:061.17:135:25First Quarter28Fri
29Sat9:124.311:062.63:121.25:300.87:125:26First Quarter29Sat
30Sun10:124.44:061.46:420.57:125:27Waxing Gibbous30Sun
31Mon12:242.711:12 AM4.45:121.67:420.27:115:29Waxing Gibbous31Mon
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 6:27 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 spring phase. Tonight's moon is 4% 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 Crescent (4% 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