Tides Today & Tomorrow in Port Chicago, CA

TIDE TIMES for Sunday, August 23, 2026
The tide is currently falling in Port Chicago, CA.
Next low tide : in 2h 57m at 5:18 pm (2.5 ft)
Next high tide : 11:08 pm (4.8 ft)
Sunset today : 7:50 pm
Sunrise tomorrow : 6:30 am
Moon phase : Waxing Gibbous (82% illuminated)
Tide Station Location : Station #9415144
Common Questions About Tides

Port Chicago, CA Tides - Dec 1918

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:463.611:33 AM4.95:311.87:29-0.27:054:49New Moon1Sun
2Mon1:343.711:55 AM5.16:092.08:10-0.27:064:48New Moon2Mon
3Tue2:213.812:245.26:502.28:47-0.27:074:48New Moon3Tue
4Wed3:053.81:005.27:342.29:21-0.27:084:48New Moon4Wed
5Thu3:473.81:425.28:202.29:53-0.37:084:48Waxing Crescent5Thu
6Fri4:283.82:275.19:082.010:24-0.37:094:48Waxing Crescent6Fri
7Sat5:073.83:174.89:591.910:57-0.37:104:48Waxing Crescent7Sat
8Sun5:463.94:124.510:551.711:35-0.27:114:48Waxing Crescent8Sun
9Mon6:264.05:154.011:581.57:124:48First Quarter9Mon
10Tue7:084.16:333.612:180.01:111.27:134:48First Quarter10Tue
11Wed7:514.48:063.41:060.22:300.97:144:48First Quarter11Wed
12Thu8:354.79:333.41:580.63:440.57:144:48Waxing Gibbous12Thu
13Fri9:205.010:473.52:530.94:510.27:154:49Waxing Gibbous13Fri
14Sat10:045.411:523.73:481.35:51-0.27:164:49Waxing Gibbous14Sat
15Sun10:505.64:441.66:46-0.47:164:49Waxing Gibbous15Sun
16Mon12:523.911:35 AM5.75:411.87:39-0.57:174:49Full Moon16Mon
17Tue1:474.112:215.86:382.08:27-0.57:184:50Full Moon17Tue
18Wed2:394.21:085.67:362.09:13-0.57:184:50Full Moon18Wed
19Thu3:294.31:565.48:322.09:55-0.47:194:50Waning Gibbous19Thu
20Fri4:164.32:455.19:271.910:34-0.37:204:51Waning Gibbous20Fri
21Sat5:024.33:364.610:231.711:10-0.17:204:51Waning Gibbous21Sat
22Sun5:464.24:334.111:211.511:440.17:214:52Waning Gibbous22Sun
23Mon6:294.25:383.612:241.47:214:52Third Quarter23Mon
24Tue7:124.26:563.212:190.31:311.17:224:53Third Quarter24Tue
25Wed7:544.38:173.012:560.62:410.97:224:54Third Quarter25Wed
26Thu8:354.49:333.01:381.03:460.67:224:54Third Quarter26Thu
27Fri9:134.510:403.22:261.44:460.37:234:55Waning Crescent27Fri
28Sat9:484.711:393.43:171.75:380.07:234:55Waning Crescent28Sat
29Sun10:214.94:082.06:26-0.17:234:56Waning Crescent29Sun
30Mon12:313.610:53 AM5.04:592.27:09-0.27:244:57Waning Crescent30Mon
31Tue1:193.811:29 AM5.25:482.37:46-0.27:244:58New Moon31Tue
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 8:13 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 spring phase. Tonight's moon is 82% 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 maximum.

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 Waxing Gibbous (82% illuminated). This places Port Chicago, CA in a spring tide cycle, so tidal ranges are near their weekly maximum 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