Tides Today & Tomorrow in Port Chicago, CA

TIDE TIMES for Friday, August 21, 2026
The tide is currently rising in Port Chicago, CA.
Next low tide : 2:59 pm (2.4 ft)
Next high tide : in 3m at 10:45 am (3.6 ft)
Sunset today : 7:53 pm
Sunrise tomorrow : 6:28 am
Moon phase : First Quarter (66% illuminated)
Tide Station Location : Station #9415144
Common Questions About Tides

Port Chicago, CA Tides - Mar 2057

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu10:005.04:062.05:58-0.26:386:02Waning Crescent1Thu
2Fri12:034.211:05 AM5.05:151.96:45-0.36:376:03Waning Crescent2Fri
3Sat12:504.412:015.16:151.77:28-0.36:356:04New Moon3Sat
4Sun1:324.512:515.07:091.48:06-0.26:346:05New Moon4Sun
5Mon2:104.61:384.87:591.28:40-0.16:326:06New Moon5Mon
6Tue2:454.52:244.68:461.09:100.16:316:07New Moon6Tue
7Wed3:154.53:114.39:310.89:370.46:296:08Waxing Crescent7Wed
8Thu3:424.54:014.010:150.710:020.66:286:09Waxing Crescent8Thu
9Fri4:054.54:573.711:010.710:311.06:266:10Waxing Crescent9Fri
10Sat4:284.56:033.411:530.711:071.36:256:11Waxing Crescent10Sat
11Sun5:584.48:183.21:560.77:237:11First Quarter11Sun
12Mon6:374.49:343.312:541.73:070.67:227:12First Quarter12Mon
13Tue7:274.310:423.51:532.04:170.57:207:13First Quarter13Tue
14Wed8:304.211:393.73:072.25:170.37:197:14First Quarter14Wed
15Thu9:434.34:212.26:070.27:177:15Waxing Gibbous15Thu
16Fri12:283.910:52 AM4.45:262.06:490.07:167:16Waxing Gibbous16Fri
17Sat1:094.011:50 AM4.56:211.87:260.07:147:17Waxing Gibbous17Sat
18Sun1:454.112:414.67:101.57:590.07:137:18Waxing Gibbous18Sun
19Mon2:154.21:294.77:551.28:280.07:117:19Full Moon19Mon
20Tue2:404.32:164.78:390.98:550.17:107:20Full Moon20Tue
21Wed3:024.43:054.69:220.69:240.37:087:21Full Moon21Wed
22Thu3:254.63:564.410:070.39:560.57:077:22Waning Gibbous22Thu
23Fri3:514.94:524.110:550.210:330.87:057:23Waning Gibbous23Fri
24Sat4:255.05:563.811:490.211:151.17:037:24Waning Gibbous24Sat
25Sun5:055.17:113.612:530.27:027:25Waning Gibbous25Sun
26Mon5:525.08:323.512:061.52:100.27:007:26Third Quarter26Mon
27Tue6:514.89:483.61:091.83:280.26:597:27Third Quarter27Tue
28Wed8:074.610:543.92:292.04:380.06:577:28Third Quarter28Wed
29Thu9:404.411:504.13:582.05:38-0.16:567:28Waning Crescent29Thu
30Fri11:014.45:141.76:29-0.26:547:29Waning Crescent30Fri
31Sat12:384.412:064.56:181.37:13-0.26:537:30Waning Crescent31Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415144)

Common Questions About Port Chicago, CA Tides

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

Slack tide in Port Chicago, CA is approximately 12:52 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 Port Chicago, CA?

Port Chicago, 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 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 (66% 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