Tides Today & Tomorrow in Port Chicago, CA

TIDE TIMES for Thursday, August 20, 2026
The tide is currently rising in Port Chicago, CA.
Next low tide (tomorrow) : 4:40 am (0.6 ft)
Next high tide : in 1h 17m at 8:03 pm (4.8 ft)
Sunset today : 7:55 pm
Sunrise tomorrow : 6:27 am
Moon phase : First Quarter (56% illuminated)
Tide Station Location : Station #9415144
Common Questions About Tides

Port Chicago, CA Tides - Jul 1924

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue12:115.32:324.08:190.07:152.34:487:34New Moon1Tue
2Wed12:415.33:154.18:530.07:582.34:497:34New Moon2Wed
3Thu1:165.33:544.19:230.08:412.34:497:34New Moon3Thu
4Fri1:555.34:314.19:490.09:252.14:507:34Waxing Crescent4Fri
5Sat2:385.15:054.110:13-0.110:122.04:507:34Waxing Crescent5Sat
6Sun3:254.95:374.110:40-0.111:031.84:517:34Waxing Crescent6Sun
7Mon4:174.66:114.211:150.04:527:33Waxing Crescent7Mon
8Tue5:174.26:474.412:011.711:56 AM0.24:527:33First Quarter8Tue
9Wed6:293.87:294.61:101.512:430.44:537:33First Quarter9Wed
10Thu7:563.68:144.92:271.21:360.84:537:32First Quarter10Thu
11Fri9:223.69:025.23:410.92:321.14:547:32Waxing Gibbous11Fri
12Sat10:383.79:525.54:480.53:301.54:557:32Waxing Gibbous12Sat
13Sun11:443.910:425.85:480.24:311.84:557:31Waxing Gibbous13Sun
14Mon12:434.16:44-0.15:322.04:567:31Waxing Gibbous14Mon
15Tue1:384.37:35-0.26:342.14:577:30Full Moon15Tue
16Wed12:236.02:304.58:24-0.37:362.14:587:30Full Moon16Wed
17Thu1:155.93:194.69:09-0.38:352.04:587:29Full Moon17Thu
18Fri2:065.64:074.69:51-0.39:321.94:597:28Waning Gibbous18Fri
19Sat2:595.34:524.710:32-0.210:301.75:007:28Waning Gibbous19Sat
20Sun3:554.95:374.711:100.011:301.65:017:27Waning Gibbous20Sun
21Mon4:554.46:224.711:480.25:017:26Third Quarter21Mon
22Tue6:043.97:074.712:341.412:280.55:027:26Third Quarter22Tue
23Wed7:203.67:524.71:421.31:110.95:037:25Third Quarter23Wed
24Thu8:363.48:374.82:521.02:001.25:047:24Third Quarter24Thu
25Fri9:463.59:214.93:570.72:521.55:057:24Waning Crescent25Fri
26Sat10:503.610:025.04:550.53:451.85:057:23Waning Crescent26Sat
27Sun11:463.810:405.15:470.34:372.05:067:22Waning Crescent27Sun
28Mon12:364.06:330.25:272.25:077:21Waning Crescent28Mon
29Tue1:224.17:140.16:152.25:087:20Waning Crescent29Tue
30Wed2:044.27:510.17:002.25:097:19New Moon30Wed
31Thu12:275.32:424.28:240.17:442.15:107:18New Moon31Thu
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 12:21 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 56% 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 (56% 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