Tides Today & Tomorrow in Port Chicago, CA

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently rising in Port Chicago, CA.
Next low tide (tomorrow) : 4:05 am (0.7 ft)
Next high tide : in 2h 43m at 8:40 pm (4.8 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 6:02 am
Moon phase : First Quarter (53% illuminated)
Tide Station Location : Station #9415144
Common Questions About Tides

Port Chicago, CA Tides - Dec 1972

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri10:394.711:413.44:101.15:47-0.17:054:48Waning Crescent1Fri
2Sat11:094.94:481.46:36-0.37:064:48Waning Crescent2Sat
3Sun12:353.511:33 AM4.95:251.87:22-0.37:074:48New Moon3Sun
4Mon1:253.711:54 AM5.06:032.18:04-0.37:084:48New Moon4Mon
5Tue2:133.812:185.16:432.38:43-0.27:094:48New Moon5Tue
6Wed2:593.912:495.17:252.49:18-0.27:104:48New Moon6Wed
7Thu3:423.91:265.18:092.49:49-0.27:114:48New Moon7Thu
8Fri4:233.92:075.08:542.310:17-0.27:124:48Waxing Crescent8Fri
9Sat5:013.82:534.89:412.110:45-0.37:134:48Waxing Crescent9Sat
10Sun5:383.83:434.510:311.911:15-0.37:134:48Waxing Crescent10Sun
11Mon6:133.84:394.111:261.711:50-0.27:144:48Waxing Crescent11Mon
12Tue6:473.95:443.712:291.47:154:49First Quarter12Tue
13Wed7:224.17:063.312:320.11:411.27:164:49First Quarter13Wed
14Thu7:594.48:403.21:180.42:570.87:164:49First Quarter14Thu
15Fri8:384.810:053.22:070.84:080.47:174:49Waxing Gibbous15Fri
16Sat9:215.211:173.43:001.25:120.17:184:50Waxing Gibbous16Sat
17Sun10:065.63:551.66:11-0.27:184:50Waxing Gibbous17Sun
18Mon12:213.710:53 AM5.84:521.97:07-0.47:194:50Full Moon18Mon
19Tue1:193.911:43 AM6.05:512.17:59-0.57:194:51Full Moon19Tue
20Wed2:144.012:346.06:532.28:48-0.67:204:51Full Moon20Wed
21Thu3:064.21:265.87:552.19:34-0.67:204:52Full Moon21Thu
22Fri3:554.22:205.58:552.010:17-0.57:214:52Waning Gibbous22Fri
23Sat4:424.33:165.09:551.810:58-0.47:214:53Waning Gibbous23Sat
24Sun5:284.34:154.510:571.511:37-0.27:224:53Waning Gibbous24Sun
25Mon6:144.35:224.012:011.37:224:54Third Quarter25Mon
26Tue6:594.46:383.512:150.11:111.17:234:55Third Quarter26Tue
27Wed7:434.47:583.112:540.52:220.87:234:55Third Quarter27Wed
28Thu8:274.59:163.11:360.93:310.57:234:56Third Quarter28Thu
29Fri9:094.610:273.22:221.34:340.27:234:57Waning Crescent29Fri
30Sat9:484.811:293.43:121.75:300.07:244:57Waning Crescent30Sat
31Sun10:234.94:042.06:16-0.27:244:58Waning 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 12:22 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 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 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 (53% illuminated). This places Port Chicago, 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