38.1450’ N, 121.6920’ W

Rio Vista, CA

64°
H 84°
L 57°
SW
11mph
Low tide
11:34 am

Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Saturday, September 12, 2026
The tide is currently falling in Rio Vista, CA.
Next low tide : in 4h 48m at 11:34 am (0.6 ft)
Next high tide : 5:18 pm (3.9 ft)
Sunset today : 7:19 pm
Sunrise tomorrow : 6:46 am
Moon phase : New Moon (3% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - May 1888

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:343.69:123.21:311.52:59-0.35:096:58Third Quarter1Tue
2Wed7:433.310:093.32:411.53:54-0.25:076:59Third Quarter2Wed
3Thu9:063.011:023.53:541.54:48-0.15:067:00Third Quarter3Thu
4Fri10:292.911:493.75:051.35:390.05:057:00Third Quarter4Fri
5Sat11:412.86:111.06:260.25:047:01Waning Crescent5Sat
6Sun12:313.812:422.87:100.77:100.45:037:02Waning Crescent6Sun
7Mon1:083.91:372.88:030.57:500.65:027:03Waning Crescent7Mon
8Tue1:413.92:282.88:520.28:270.85:017:04Waning Crescent8Tue
9Wed2:103.93:192.79:370.19:021.05:007:05New Moon9Wed
10Thu2:373.94:092.710:19-0.19:361.24:597:06New Moon10Thu
11Fri3:003.94:592.710:58-0.110:101.34:587:07New Moon11Fri
12Sat3:233.95:492.711:35-0.210:471.44:577:08New Moon12Sat
13Sun3:513.96:372.812:11-0.24:567:09Waxing Crescent13Sun
14Mon4:253.97:242.812:47-0.14:557:10Waxing Crescent14Mon
15Tue5:053.88:102.912:121.51:23-0.14:557:10Waxing Crescent15Tue
16Wed5:523.78:563.01:041.62:040.04:547:11Waxing Crescent16Wed
17Thu6:453.59:413.12:031.62:500.14:537:12First Quarter17Thu
18Fri7:483.210:243.23:091.53:390.24:527:13First Quarter18Fri
19Sat9:043.011:053.44:191.34:310.34:517:14First Quarter19Sat
20Sun10:312.911:423.65:281.05:210.54:517:15Waxing Gibbous20Sun
21Mon11:502.86:340.76:100.74:507:15Waxing Gibbous21Mon
22Tue12:183.812:582.87:360.36:590.84:497:16Waxing Gibbous22Tue
23Wed12:544.02:002.78:340.07:491.04:497:17Waxing Gibbous23Wed
24Thu1:314.23:022.79:30-0.38:401.24:487:18Full Moon24Thu
25Fri2:114.34:042.710:23-0.69:311.34:477:19Full Moon25Fri
26Sat2:524.35:062.811:13-0.710:241.54:477:19Full Moon26Sat
27Sun3:364.36:062.912:02-0.84:467:20Waning Gibbous27Sun
28Mon4:224.17:033.012:50-0.74:467:21Waning Gibbous28Mon
29Tue5:133.87:573.212:151.61:38-0.64:457:22Waning Gibbous29Tue
30Wed6:103.58:483.41:171.72:26-0.44:457:22Third Quarter30Wed
31Thu7:183.29:383.52:251.63:15-0.24:457:23Third Quarter31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415316)

Common Questions About Rio Vista, CA Tides

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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 3% 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 New Moon (3% 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