Tides Today & Tomorrow in Port Chicago, CA

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently falling in Port Chicago, CA.
Next low tide : in 4h 17m at 2:22 am (0.9 ft)
Next high tide : 8:17 am (3.4 ft)
Sunset today : 7:57 pm
Sunrise tomorrow : 6:26 am
Moon phase : First Quarter (37% illuminated)
Tide Station Location : Station #9415144
Common Questions About Tides

Port Chicago, CA Tides - Oct 1926

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri10:534.210:064.34:420.14:191.76:035:52Waning Crescent1Fri
2Sat11:374.410:584.35:270.15:141.46:045:50Waning Crescent2Sat
3Sun12:164.46:060.16:031.26:055:49Waning Crescent3Sun
4Mon12:504.46:390.26:471.06:065:47Waning Crescent4Mon
5Tue12:274.31:184.47:070.47:290.86:075:46New Moon5Tue
6Wed1:084.21:394.47:300.68:080.76:075:44New Moon6Wed
7Thu1:484.11:524.57:490.88:450.66:085:43New Moon7Thu
8Fri2:304.02:054.68:120.99:200.56:095:41New Moon8Fri
9Sat3:153.82:284.88:411.19:540.46:105:40Waxing Crescent9Sat
10Sun4:053.73:005.09:181.310:330.46:115:38Waxing Crescent10Sun
11Mon5:033.63:395.010:001.611:220.46:125:37Waxing Crescent11Mon
12Tue6:123.54:264.910:501.86:135:35First Quarter12Tue
13Wed7:253.55:224.812:280.411:50 AM2.06:145:34First Quarter13Wed
14Thu8:323.66:304.61:470.41:032.06:155:33First Quarter14Thu
15Fri9:313.87:524.42:580.22:241.96:165:31First Quarter15Fri
16Sat10:224.09:194.53:580.13:411.66:175:30Waxing Gibbous16Sat
17Sun11:064.210:324.54:490.04:471.26:185:28Waxing Gibbous17Sun
18Mon11:454.511:354.65:340.05:470.86:195:27Waxing Gibbous18Mon
19Tue12:214.76:160.16:420.46:205:26Full Moon19Tue
20Wed12:334.612:564.96:560.37:360.16:215:24Full Moon20Wed
21Thu1:304.51:295.17:340.68:290.06:225:23Full Moon21Thu
22Fri2:264.42:025.28:140.99:21-0.16:235:22Full Moon22Fri
23Sat3:244.22:365.28:541.210:13-0.16:245:20Waning Gibbous23Sat
24Sun4:254.13:125.19:381.511:070.06:255:19Waning Gibbous24Sun
25Mon5:284.03:534.910:271.86:265:18Waning Gibbous25Mon
26Tue6:323.94:424.612:040.011:25 AM2.06:275:17Third Quarter26Tue
27Wed7:363.95:424.21:050.112:322.06:285:15Third Quarter27Wed
28Thu8:354.07:013.92:050.11:461.96:295:14Third Quarter28Thu
29Fri9:294.18:253.73:020.12:561.76:305:13Third Quarter29Fri
30Sat10:164.29:353.73:520.13:591.36:315:12Waning Crescent30Sat
31Sun10:574.310:343.74:350.24:541.06:325:11Waning Crescent31Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415144)

Common Questions About Port Chicago, CA Tides

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

Slack tide in Port Chicago, CA is approximately 5:19 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 Port Chicago, CA?

Port Chicago, CA is currently in a transitional phase. Tonight's moon is 37% 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 Port Chicago, 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 Port Chicago, CA?

Tide predictions for Port Chicago, 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 Port Chicago, CA?

Tide data for Port Chicago, CA is sourced from NOAA Station #9415144. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9415144.

What is the moon phase in Port Chicago, CA tonight?

Tonight the moon over Port Chicago, CA is First Quarter (37% illuminated). This places Port Chicago, 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