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 3h 53m at 12:59 pm (1.7 ft)
Next high tide : 7:15 pm (4.8 ft)
Sunset today : 7:56 pm
Sunrise tomorrow : 6:27 am
Moon phase : First Quarter (47% illuminated)
Tide Station Location : Station #9415144
Common Questions About Tides

Port Chicago, CA Tides - Sep 2054

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue1:125.62:434.68:360.08:261.36:387:37New Moon1Tue
2Wed2:085.53:234.79:160.09:221.06:397:36New Moon2Wed
3Thu3:035.44:014.89:550.210:180.86:407:34Waxing Crescent3Thu
4Fri3:595.14:394.910:320.411:140.76:417:32Waxing Crescent4Fri
5Sat4:584.75:194.911:110.66:417:31Waxing Crescent5Sat
6Sun6:014.46:014.912:120.611:53 AM0.96:427:29Waxing Crescent6Sun
7Mon7:104.06:494.81:150.612:401.26:437:28First Quarter7Mon
8Tue8:223.97:464.72:230.61:351.56:447:26First Quarter8Tue
9Wed9:333.88:524.63:320.52:411.86:457:25First Quarter9Wed
10Thu10:384.09:594.54:370.43:511.86:467:23First Quarter10Thu
11Fri11:354.110:594.55:340.24:561.86:477:22Waxing Gibbous11Fri
12Sat12:254.36:230.15:531.76:477:20Waxing Gibbous12Sat
13Sun1:094.47:060.16:451.56:487:19Waxing Gibbous13Sun
14Mon12:364.61:484.47:440.27:311.46:497:17Waxing Gibbous14Mon
15Tue1:174.62:224.48:170.38:141.36:507:15Full Moon15Tue
16Wed1:554.52:504.48:450.48:531.16:517:14Full Moon16Wed
17Thu2:334.43:124.49:090.69:301.06:527:12Full Moon17Thu
18Fri3:114.33:284.59:300.710:050.96:537:11Full Moon18Fri
19Sat3:514.23:464.69:540.810:380.86:537:09Waning Gibbous19Sat
20Sun4:354.04:134.810:250.911:140.76:547:08Waning Gibbous20Sun
21Mon5:273.84:484.911:031.111:580.76:557:06Waning Gibbous21Mon
22Tue6:303.65:314.911:471.46:567:04Waning Gibbous22Tue
23Wed7:473.56:224.912:560.712:401.66:577:03Third Quarter23Wed
24Thu9:053.57:224.82:140.71:441.86:587:01Third Quarter24Thu
25Fri10:133.68:354.73:380.62:591.96:597:00Third Quarter25Fri
26Sat11:113.99:544.84:460.44:161.76:596:58Waning Crescent26Sat
27Sun12:014.15:430.25:261.57:006:57Waning Crescent27Sun
28Mon12:464.46:320.16:281.17:016:55Waning Crescent28Mon
29Tue12:125.01:264.67:170.17:250.87:026:54Waning Crescent29Tue
30Wed1:105.02:044.87:580.28:200.57:036:52New Moon30Wed
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 4:07 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 neap phase. Tonight's moon is 47% 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 (47% 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