Tides Today & Tomorrow in Antioch, CA

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently falling in Antioch, CA.
Next low tide : in 1h 34m at 3:44 am (0.7 ft)
Next high tide : 9:34 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 - Sep 1942

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue9:063.08:403.83:080.82:311.16:367:37Third Quarter1Tue
2Wed10:152.99:363.74:130.73:251.36:377:36Third Quarter2Wed
3Thu11:183.010:353.85:170.54:251.56:387:34Third Quarter3Thu
4Fri12:143.16:150.45:251.56:397:33Waning Crescent4Fri
5Sat1:053.27:050.26:221.46:407:31Waning Crescent5Sat
6Sun12:183.91:513.37:490.17:151.36:407:30Waning Crescent6Sun
7Mon1:023.92:333.48:290.18:031.26:417:28Waning Crescent7Mon
8Tue1:424.03:113.49:040.18:501.16:427:27New Moon8Tue
9Wed2:214.03:453.49:370.19:351.06:437:25New Moon9Wed
10Thu3:003.94:123.510:080.210:190.96:447:24New Moon10Thu
11Fri3:413.84:333.610:380.311:040.86:457:22New Moon11Fri
12Sat4:263.74:503.711:070.411:510.76:467:21Waxing Crescent12Sat
13Sun5:153.65:163.911:390.56:467:19Waxing Crescent13Sun
14Mon6:113.35:514.012:420.612:150.76:477:17Waxing Crescent14Mon
15Tue7:203.16:354.01:390.512:580.86:487:16Waxing Crescent15Tue
16Wed8:382.97:284.02:430.51:501.06:497:14First Quarter16Wed
17Thu9:552.98:343.93:530.42:551.26:507:13First Quarter17Thu
18Fri11:043.09:573.85:010.24:111.36:517:11First Quarter18Fri
19Sat12:043.16:040.15:271.36:527:10Waxing Gibbous19Sat
20Sun12:583.37:00-0.16:351.16:527:08Waxing Gibbous20Sun
21Mon12:273.91:473.57:50-0.27:361.06:537:06Waxing Gibbous21Mon
22Tue1:243.92:323.68:36-0.28:330.86:547:05Waxing Gibbous22Tue
23Wed2:173.83:143.69:19-0.19:270.76:557:03Full Moon23Wed
24Thu3:083.73:533.79:590.110:180.66:567:02Full Moon24Thu
25Fri3:593.54:283.710:370.311:080.56:577:00Full Moon25Fri
26Sat4:513.45:003.711:130.511:580.56:586:59Waning Gibbous26Sat
27Sun5:463.25:293.711:490.76:596:57Waning Gibbous27Sun
28Mon6:443.05:563.712:480.412:250.96:596:56Waning Gibbous28Mon
29Tue7:452.96:283.61:390.41:041.17:006:54Waning Gibbous29Tue
30Wed8:482.87:113.62:340.41:511.37:016:52Third Quarter30Wed
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 6:39 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