Tides Today & Tomorrow in Antioch, CA

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently rising in Antioch, CA.
Next low tide (tomorrow) : 5:23 am (0.6 ft)
Next high tide : in 5h 38m at 10:08 pm (4.0 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 6:01 am
Moon phase : First Quarter (53% illuminated)
Tide Station Location : Station #9415064
Common Questions About Tides

Antioch, CA Tides - Aug 2072

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon4:183.86:173.412:020.16:118:15Waning Gibbous1Mon
2Tue4:553.76:473.512:290.26:128:14Waning Gibbous2Tue
3Wed5:393.57:153.612:371.512:560.46:138:13Waning Gibbous3Wed
4Thu6:303.37:413.71:271.41:250.56:148:12Waning Gibbous4Thu
5Fri7:413.08:133.82:251.32:020.76:148:11Third Quarter5Fri
6Sat9:212.88:543.93:341.22:471.06:158:10Third Quarter6Sat
7Sun10:442.89:444.04:451.03:421.26:168:09Third Quarter7Sun
8Mon11:532.810:384.15:520.74:431.36:178:08Third Quarter8Mon
9Tue12:522.96:510.45:451.46:188:07Waning Crescent9Tue
10Wed1:453.07:430.26:461.46:198:05Waning Crescent10Wed
11Thu12:244.52:343.18:310.07:431.36:208:04Waning Crescent11Thu
12Fri1:164.63:193.29:16-0.28:391.26:208:03New Moon12Fri
13Sat2:084.64:013.39:59-0.29:351.16:218:02New Moon13Sat
14Sun3:014.64:423.510:40-0.210:311.06:228:00New Moon14Sun
15Mon3:554.45:233.611:20-0.111:270.86:237:59Waxing Crescent15Mon
16Tue4:514.26:053.812:000.16:247:58Waxing Crescent16Tue
17Wed5:523.96:493.912:260.812:400.36:257:56Waxing Crescent17Wed
18Thu6:593.67:384.01:270.71:230.56:267:55Waxing Crescent18Thu
19Fri8:143.38:344.02:330.72:110.76:277:54First Quarter19Fri
20Sat9:303.19:354.03:420.63:061.06:277:52First Quarter20Sat
21Sun10:423.010:384.04:520.44:081.26:287:51First Quarter21Sun
22Mon11:473.111:364.15:580.25:121.36:297:50Waxing Gibbous22Mon
23Tue12:463.26:560.06:131.46:307:48Waxing Gibbous23Tue
24Wed12:284.11:383.37:47-0.17:101.46:317:47Waxing Gibbous24Wed
25Thu1:144.02:263.48:32-0.28:011.46:327:45Waxing Gibbous25Thu
26Fri1:564.03:093.59:13-0.18:481.36:337:44Full Moon26Fri
27Sat2:343.93:493.59:500.09:331.36:337:43Full Moon27Sat
28Sun3:093.84:253.510:230.110:151.36:347:41Full Moon28Sun
29Mon3:423.74:563.510:530.310:551.26:357:40Full Moon29Mon
30Tue4:163.65:213.511:200.411:361.26:367:38Waning Gibbous30Tue
31Wed4:543.55:383.611:450.56:377:37Waning Gibbous31Wed
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 1:45 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 53% 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 (53% 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