Tides Today & Tomorrow in Port Chicago, CA

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently rising in Port Chicago, CA.
Next low tide : 12:59 pm (1.7 ft)
Next high tide : in 5m at 8:17 am (3.4 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 1925

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue1:134.57:09-0.16:401.65:376:38Full Moon1Tue
2Wed12:275.51:554.67:52-0.17:381.35:386:37Full Moon2Wed
3Thu1:225.42:354.78:320.08:331.15:396:35Full Moon3Thu
4Fri2:165.23:134.89:100.19:260.95:406:34Waning Gibbous4Fri
5Sat3:104.93:504.89:460.410:210.85:416:32Waning Gibbous5Sat
6Sun4:084.54:264.810:220.611:170.85:416:31Waning Gibbous6Sun
7Mon5:104.15:044.711:001.05:426:29Waning Gibbous7Mon
8Tue6:193.85:464.712:190.811:43 AM1.35:436:27Third Quarter8Tue
9Wed7:313.76:354.61:260.712:361.65:446:26Third Quarter9Wed
10Thu8:423.77:354.52:350.61:381.95:456:24Third Quarter10Thu
11Fri9:473.88:404.43:390.52:462.05:466:23Third Quarter11Fri
12Sat10:434.09:404.54:350.33:512.05:476:21Waning Crescent12Sat
13Sun11:324.210:334.65:230.24:481.85:476:20Waning Crescent13Sun
14Mon12:154.36:050.25:391.75:486:18Waning Crescent14Mon
15Tue12:524.36:420.26:251.55:496:17Waning Crescent15Tue
16Wed12:024.61:254.37:130.37:081.35:506:15New Moon16Wed
17Thu12:424.61:524.37:390.47:491.25:516:13New Moon17Thu
18Fri1:224.62:124.48:020.58:271.05:526:12New Moon18Fri
19Sat2:034.52:284.58:240.69:050.95:536:10New Moon19Sat
20Sun2:474.32:474.78:510.79:430.75:536:09Waxing Crescent20Sun
21Mon3:354.13:164.99:240.810:270.65:546:07Waxing Crescent21Mon
22Tue4:303.93:535.010:041.111:190.65:556:06Waxing Crescent22Tue
23Wed5:383.74:385.010:501.45:566:04First Quarter23Wed
24Thu6:563.65:315.012:270.611:45 AM1.65:576:02First Quarter24Thu
25Fri8:153.66:364.81:490.612:531.95:586:01First Quarter25Fri
26Sat9:243.87:544.83:050.42:121.95:595:59First Quarter26Sat
27Sun10:234.09:174.84:090.23:311.86:005:58Waxing Gibbous27Sun
28Mon11:144.310:304.95:040.04:411.56:005:56Waxing Gibbous28Mon
29Tue11:594.511:324.95:530.05:431.26:015:55Waxing Gibbous29Tue
30Wed12:404.66:360.06:390.96:025:53Full 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 10:38 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 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