Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently falling in Rio Vista, CA.
Next low tide : in 1h 44m at 6:32 am (0.7 ft)
Next high tide : 11:48 am (2.4 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 5:44 am
Moon phase : First Quarter (69% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Nov 2034

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed9:072.97:373.72:56-0.22:331.37:336:07Third Quarter1Wed
2Thu10:113.18:503.43:55-0.13:451.37:346:06Third Quarter2Thu
3Fri11:123.310:143.14:530.04:591.27:356:05Third Quarter3Fri
4Sat12:063.55:490.06:091.07:366:04Third Quarter4Sat
5Sun11:533.711:413.05:400.16:130.76:375:03Waning Crescent5Sun
6Mon12:353.86:260.27:110.56:385:02Waning Crescent6Mon
7Tue12:393.01:123.97:090.48:030.26:395:01Waning Crescent7Tue
8Wed1:302.91:454.07:480.68:510.06:405:00Waning Crescent8Wed
9Thu2:192.92:154.08:240.89:36-0.16:414:59New Moon9Thu
10Fri3:072.92:413.98:570.910:19-0.26:424:58New Moon10Fri
11Sat3:542.83:053.99:281.110:59-0.26:434:57New Moon11Sat
12Sun4:422.83:283.910:011.211:38-0.26:444:56New Moon12Sun
13Mon5:312.83:553.810:361.36:464:56Waxing Crescent13Mon
14Tue6:202.84:283.812:16-0.111:16 AM1.46:474:55Waxing Crescent14Tue
15Wed7:092.85:073.612:550.012:021.56:484:54Waxing Crescent15Wed
16Thu7:582.85:523.51:350.112:551.56:494:53Waxing Crescent16Thu
17Fri8:472.96:463.22:180.21:571.56:504:53First Quarter17Fri
18Sat9:353.07:533.03:060.33:091.56:514:52First Quarter18Sat
19Sun10:193.29:242.83:550.34:231.36:524:52First Quarter19Sun
20Mon11:003.410:552.74:450.45:321.16:534:51First Quarter20Mon
21Tue11:373.65:320.56:350.76:544:50Waxing Gibbous21Tue
22Wed12:052.712:123.86:190.67:340.46:554:50Waxing Gibbous22Wed
23Thu1:062.812:484.17:050.88:300.16:564:49Waxing Gibbous23Thu
24Fri2:022.81:264.37:520.99:23-0.26:574:49Full Moon24Fri
25Sat2:582.72:064.48:401.010:15-0.46:584:48Full Moon25Sat
26Sun3:552.72:494.49:311.111:04-0.56:594:48Full Moon26Sun
27Mon4:532.83:354.410:231.211:53-0.57:004:48Waning Gibbous27Mon
28Tue5:522.94:244.211:181.37:014:47Waning Gibbous28Tue
29Wed6:513.05:183.912:42-0.412:171.37:024:47Waning Gibbous29Wed
30Thu7:483.16:193.61:32-0.31:211.47:034:47Waning Gibbous30Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415316)

Common Questions About Rio Vista, CA Tides

Show All
What time does the tide turn (slack tide) in Rio Vista, CA today?

Slack tide in Rio Vista, CA is approximately 9:10 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 transitional phase. Tonight's moon is 69% 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 shifting between spring and neap.

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 (69% illuminated). This places Rio Vista, CA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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