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 1h 43m at 4:53 am (0.5 ft)
Next high tide : 10:46 am (2.7 ft)
Sunset today : 7:54 pm
Sunrise tomorrow : 6:27 am
Moon phase : First Quarter (56% illuminated)
Tide Station Location : Station #9415064
Common Questions About Tides

Antioch, CA Tides - Jan 1940

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon8:113.87:523.11:320.02:330.97:234:57Third Quarter1Mon
2Tue9:044.09:192.82:210.33:470.77:234:58Third Quarter2Tue
3Wed9:564.110:342.83:150.54:570.47:234:59Third Quarter3Wed
4Thu10:464.211:412.84:120.86:010.17:235:00Waning Crescent4Thu
5Fri11:324.35:091.06:58-0.27:235:01Waning Crescent5Fri
6Sat12:412.912:154.36:041.27:49-0.47:235:02Waning Crescent6Sat
7Sun1:372.912:544.36:561.38:37-0.57:235:03New Moon7Sun
8Mon2:303.01:294.27:471.59:20-0.57:235:03New Moon8Mon
9Tue3:203.12:024.18:351.610:01-0.57:235:04New Moon9Tue
10Wed4:063.22:354.09:211.610:38-0.47:235:05New Moon10Wed
11Thu4:503.23:093.910:061.611:12-0.27:235:06Waxing Crescent11Thu
12Fri5:303.33:483.710:521.611:44-0.17:235:07Waxing Crescent12Fri
13Sat6:093.44:313.511:401.67:225:08Waxing Crescent13Sat
14Sun6:463.55:213.312:140.112:321.67:225:09Waxing Crescent14Sun
15Mon7:233.66:283.012:440.31:321.57:225:10First Quarter15Mon
16Tue8:013.78:072.71:170.52:391.37:225:11First Quarter16Tue
17Wed8:403.89:342.61:570.73:481.17:215:12First Quarter17Wed
18Thu9:203.910:442.62:450.94:530.87:215:13First Quarter18Thu
19Fri10:004.111:462.73:391.15:520.57:205:15Waxing Gibbous19Fri
20Sat10:404.34:351.36:430.27:205:16Waxing Gibbous20Sat
21Sun12:412.811:22 AM4.45:311.47:31-0.17:195:17Waxing Gibbous21Sun
22Mon1:322.912:054.66:261.48:15-0.27:195:18Waxing Gibbous22Mon
23Tue2:193.012:514.77:191.48:57-0.37:185:19Full Moon23Tue
24Wed3:033.11:384.78:131.39:38-0.47:185:20Full Moon24Wed
25Thu3:463.22:284.69:081.210:17-0.37:175:21Full Moon25Thu
26Fri4:263.43:204.410:041.110:55-0.27:165:22Waning Gibbous26Fri
27Sat5:073.64:154.211:021.011:34-0.17:165:23Waning Gibbous27Sat
28Sun5:503.85:163.812:030.97:155:24Waning Gibbous28Sun
29Mon6:363.96:283.412:140.11:080.97:145:26Waning Gibbous29Mon
30Tue7:274.07:513.112:580.42:180.87:145:27Third Quarter30Tue
31Wed8:244.19:112.91:470.63:310.67:135:28Third Quarter31Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415064)

Common Questions About Antioch, CA Tides

Show All
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 56% 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 (56% 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