Tides Today & Tomorrow in Antioch, CA

TIDE TIMES for Friday, August 21, 2026
The tide is currently rising in Antioch, CA.
Next low tide : 4:22 pm (1.8 ft)
Next high tide : in 54m at 11:50 am (2.8 ft)
Sunset today : 7:52 pm
Sunrise tomorrow : 6:27 am
Moon phase : First Quarter (66% illuminated)
Tide Station Location : Station #9415064
Common Questions About Tides

Antioch, CA Tides - Aug 1936

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:244.42:343.18:32-0.37:351.55:107:16Full Moon1Sat
2Sun1:084.43:123.29:09-0.38:251.45:117:15Full Moon2Sun
3Mon1:544.43:463.49:44-0.29:161.25:117:14Full Moon3Mon
4Tue2:414.34:173.510:17-0.110:091.15:127:13Full Moon4Tue
5Wed3:314.14:463.810:500.111:050.95:137:12Waning Gibbous5Wed
6Thu4:263.85:184.011:230.35:147:11Waning Gibbous6Thu
7Fri5:283.45:564.212:050.911:59 AM0.55:157:10Waning Gibbous7Fri
8Sat6:473.16:424.31:120.812:410.85:167:09Third Quarter8Sat
9Sun8:162.87:384.32:260.71:321.05:177:08Third Quarter9Sun
10Mon9:382.78:444.33:420.52:341.35:177:06Third Quarter10Mon
11Tue10:492.89:534.34:530.33:451.45:187:05Waning Crescent11Tue
12Wed11:523.010:564.35:560.04:561.55:197:04Waning Crescent12Wed
13Thu12:473.16:50-0.26:001.55:207:03Waning Crescent13Thu
14Fri1:373.37:38-0.36:581.55:217:02Waning Crescent14Fri
15Sat12:404.22:243.48:20-0.37:521.45:227:00New Moon15Sat
16Sun1:254.13:063.58:59-0.28:421.45:236:59New Moon16Sun
17Mon2:084.03:443.59:340.09:311.35:246:58New Moon17Mon
18Tue2:513.84:193.610:050.210:181.35:246:56New Moon18Tue
19Wed3:343.64:483.610:320.411:051.25:256:55Waxing Crescent19Wed
20Thu4:213.45:103.610:560.611:541.15:266:54Waxing Crescent20Thu
21Fri5:153.25:253.711:180.85:276:52Waxing Crescent21Fri
22Sat6:192.95:453.812:461.011:44 AM1.05:286:51Waxing Crescent22Sat
23Sun7:332.76:183.91:450.912:211.25:296:50First Quarter23Sun
24Mon8:482.77:053.92:490.81:091.55:306:48First Quarter24Mon
25Tue9:562.78:053.93:540.62:101.65:316:47First Quarter25Tue
26Wed10:562.89:163.94:540.43:201.75:316:45First Quarter26Wed
27Thu11:483.010:244.15:460.24:291.75:326:44Waxing Gibbous27Thu
28Fri12:343.16:330.05:321.65:336:43Waxing Gibbous28Fri
29Sat1:153.27:15-0.16:281.45:346:41Waxing Gibbous29Sat
30Sun12:124.21:513.37:53-0.17:221.25:356:40Waxing Gibbous30Sun
31Mon1:024.32:233.58:290.08:140.95:366:38Full Moon31Mon
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 2:06 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 Antioch, CA?

Antioch, CA is currently in a transitional phase. Tonight's moon is 66% 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 shifting between spring and neap.

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 (66% illuminated). This places Antioch, CA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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