Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Monday, June 22, 2026
The tide is currently rising in Rio Vista, CA.
Next low tide : 4:47 pm (0.6 ft)
Next high tide : in 9m at 10:30 am (2.6 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 5:44 am
Moon phase : First Quarter (59% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Aug 2033

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon8:253.19:073.83:121.42:290.96:108:16First Quarter1Mon
2Tue9:372.89:473.84:171.43:081.16:108:15First Quarter2Tue
3Wed10:522.710:313.95:241.23:541.36:118:14First Quarter3Wed
4Thu12:052.66:291.04:471.56:128:12First Quarter4Thu
5Fri1:092.77:280.85:461.66:138:11Waxing Gibbous5Fri
6Sat12:054.02:032.88:190.66:471.76:148:10Waxing Gibbous6Sat
7Sun12:504.02:492.99:050.47:481.76:158:09Waxing Gibbous7Sun
8Mon1:354.13:293.09:470.38:471.76:168:08Waxing Gibbous8Mon
9Tue2:204.24:053.210:260.29:431.66:178:07Full Moon9Tue
10Wed3:064.34:403.311:040.210:361.46:178:06Full Moon10Wed
11Thu3:544.35:153.511:400.211:291.26:188:04Full Moon11Thu
12Fri4:444.25:513.812:160.26:198:03Waning Gibbous12Fri
13Sat5:394.06:314.012:221.112:530.36:208:02Waning Gibbous13Sat
14Sun6:383.77:154.11:191.01:320.56:218:01Waning Gibbous14Sun
15Mon7:453.48:044.22:231.02:150.76:227:59Third Quarter15Mon
16Tue9:003.18:584.33:320.93:040.96:237:58Third Quarter16Tue
17Wed10:202.99:584.34:460.84:021.16:247:57Third Quarter17Wed
18Thu11:392.911:024.25:570.65:061.36:247:56Third Quarter18Thu
19Fri12:493.07:030.46:121.46:257:54Waning Crescent19Fri
20Sat12:044.21:483.28:000.27:161.56:267:53Waning Crescent20Sat
21Sun1:014.22:393.48:510.18:161.56:277:51Waning Crescent21Sun
22Mon1:524.23:243.59:360.09:111.46:287:50Waning Crescent22Mon
23Tue2:384.14:053.610:160.110:011.36:297:49New Moon23Tue
24Wed3:224.14:423.610:530.210:481.36:307:47New Moon24Wed
25Thu4:054.05:173.711:250.311:321.26:317:46New Moon25Thu
26Fri4:483.85:493.711:540.56:317:44New Moon26Fri
27Sat5:333.76:183.812:161.212:200.66:327:43Waxing Crescent27Sat
28Sun6:203.56:453.812:591.112:440.86:337:42Waxing Crescent28Sun
29Mon7:113.27:113.81:451.11:110.96:347:40Waxing Crescent29Mon
30Tue8:093.07:403.82:361.11:451.16:357:39Waxing Crescent30Tue
31Wed9:152.88:163.83:361.12:281.36:367:37First Quarter31Wed
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 1:38 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 neap phase. Tonight's moon is 59% 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 (59% 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