Tides Today & Tomorrow in Antioch, CA

TIDE TIMES for Thursday, August 20, 2026
The tide is currently falling in Antioch, CA.
Next low tide : in 5h 17m at 4:53 am (0.5 ft)
Next high tide : 10:46 am (2.7 ft)
Sunset today : 7:55 pm
Sunrise tomorrow : 6:26 am
Moon phase : First Quarter (47% illuminated)
Tide Station Location : Station #9415064
Common Questions About Tides

Antioch, CA Tides - Jun 1940

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:172.76:290.35:560.74:457:24Waning Crescent1Sat
2Sun12:073.81:092.77:180.16:350.94:457:24Waning Crescent2Sun
3Mon12:333.91:592.78:04-0.17:131.04:457:25Waning Crescent3Mon
4Tue12:553.92:482.78:47-0.27:531.14:457:25New Moon4Tue
5Wed1:194.03:362.79:28-0.38:351.24:447:26New Moon5Wed
6Thu1:514.14:232.810:08-0.49:191.24:447:27New Moon6Thu
7Fri2:304.25:082.810:47-0.410:071.24:447:27New Moon7Fri
8Sat3:144.25:532.911:26-0.410:581.24:447:28Waxing Crescent8Sat
9Sun4:034.16:393.012:06-0.44:447:28Waxing Crescent9Sun
10Mon4:563.97:263.112:48-0.24:437:29Waxing Crescent10Mon
11Tue5:563.68:153.312:581.11:34-0.14:437:29First Quarter11Tue
12Wed7:113.39:043.52:081.02:230.14:437:30First Quarter12Wed
13Thu8:433.09:523.73:210.83:160.34:437:30First Quarter13Thu
14Fri10:072.910:393.94:330.54:100.54:437:31Waxing Gibbous14Fri
15Sat11:182.811:234.15:390.25:040.74:437:31Waxing Gibbous15Sat
16Sun12:222.86:39-0.15:560.84:437:31Waxing Gibbous16Sun
17Mon12:044.21:212.97:35-0.46:481.04:437:32Waxing Gibbous17Mon
18Tue12:434.22:172.98:27-0.67:391.14:447:32Full Moon18Tue
19Wed1:214.23:113.09:16-0.68:301.34:447:32Full Moon19Wed
20Thu1:594.14:033.010:02-0.79:201.44:447:32Full Moon20Thu
21Fri2:374.04:533.110:46-0.610:091.44:447:33Waning Gibbous21Fri
22Sat3:183.95:413.211:27-0.510:591.54:447:33Waning Gibbous22Sat
23Sun4:013.76:273.312:06-0.34:457:33Waning Gibbous23Sun
24Mon4:493.57:123.312:45-0.14:457:33Waning Gibbous24Mon
25Tue5:473.27:573.412:481.41:230.14:457:33Third Quarter25Tue
26Wed7:052.98:423.51:501.42:020.34:467:33Third Quarter26Wed
27Thu8:332.79:253.72:561.22:440.54:467:33Third Quarter27Thu
28Fri9:492.610:073.84:041.03:290.74:467:33Third Quarter28Fri
29Sat10:542.610:443.95:070.74:160.94:477:33Waning Crescent29Sat
30Sun11:542.711:184.06:040.45:041.14:477:33Waning Crescent30Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415064)

Common Questions About Antioch, CA Tides

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What time does the tide turn (slack tide) in Antioch, CA today?

Slack tide in Antioch, CA is approximately 7:49 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 Antioch, CA?

Antioch, CA is currently in a neap phase. Tonight's moon is 47% 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 Antioch, 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 Antioch, CA?

Tide predictions for Antioch, 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 Antioch, CA?

Tide data for Antioch, CA is sourced from NOAA Station #9415064. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9415064.

What is the moon phase in Antioch, CA tonight?

Tonight the moon over Antioch, CA is First Quarter (47% illuminated). This places Antioch, 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