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 38m 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 - Apr 1925

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed6:354.09:393.71:212.03:120.35:536:30First Quarter1Wed
2Thu7:513.910:313.92:362.04:070.25:516:31First Quarter2Thu
3Fri9:103.911:164.03:451.84:530.15:506:32Waxing Gibbous3Fri
4Sat10:144.011:544.14:441.55:330.15:486:33Waxing Gibbous4Sat
5Sun11:084.15:351.26:070.25:476:34Waxing Gibbous5Sun
6Mon12:264.211:56 AM4.26:210.96:370.35:456:35Waxing Gibbous6Mon
7Tue12:534.312:424.27:040.77:040.45:446:36Full Moon7Tue
8Wed1:144.41:284.27:460.57:310.65:426:37Full Moon8Wed
9Thu1:334.62:164.18:270.38:030.75:416:38Full Moon9Thu
10Fri1:564.93:064.09:090.18:390.95:396:39Full Moon10Fri
11Sat2:265.14:023.99:540.09:201.25:386:40Waning Gibbous11Sat
12Sun3:035.25:063.810:450.010:071.45:366:40Waning Gibbous12Sun
13Mon3:475.16:163.711:450.011:031.75:356:41Waning Gibbous13Mon
14Tue4:385.07:293.712:560.15:346:42Third Quarter14Tue
15Wed5:404.68:373.812:111.82:090.05:326:43Third Quarter15Wed
16Thu7:004.39:384.01:351.93:150.05:316:44Third Quarter16Thu
17Fri8:354.210:304.33:001.74:13-0.15:296:45Waning Crescent17Fri
18Sat9:564.211:164.54:131.35:03-0.15:286:46Waning Crescent18Sat
19Sun11:024.211:574.75:160.95:480.05:276:47Waning Crescent19Sun
20Mon11:584.26:110.56:280.15:256:48Waning Crescent20Mon
21Tue12:344.812:514.27:030.37:050.45:246:49New Moon21Tue
22Wed1:074.91:414.17:510.17:390.75:236:50New Moon22Wed
23Thu1:354.92:304.08:370.08:111.05:216:51New Moon23Thu
24Fri1:594.93:213.99:200.08:431.35:206:52New Moon24Fri
25Sat2:224.94:143.810:020.09:181.65:196:53Waxing Crescent25Sat
26Sun2:484.85:093.710:440.09:581.85:176:53Waxing Crescent26Sun
27Mon3:204.76:083.611:270.110:451.95:166:54Waxing Crescent27Mon
28Tue3:594.57:073.612:150.25:156:55Waxing Crescent28Tue
29Wed4:474.38:063.71:090.25:146:56First Quarter29Wed
30Thu5:453.99:003.812:512.02:050.25:136:57First Quarter30Thu
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