Tides Today & Tomorrow in Alameda, CA

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently rising in Alameda, CA.
Next low tide (tomorrow) : 12:58 am (1.1 ft)
Next high tide : in 1h 55m at 5:32 pm (6.3 ft)
Sunset today : 7:56 pm
Sunrise tomorrow : 6:28 am
Moon phase : First Quarter (47% illuminated)
Tide Station Location : Station #9414750
Common Questions About Tides

Alameda, CA Tides - Sep 2082

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue9:195.17:566.72:220.11:593.46:407:37Waxing Gibbous1Tue
2Wed10:165.49:036.73:26-0.13:093.16:407:36Waxing Gibbous2Wed
3Thu11:025.710:016.84:19-0.24:082.76:417:34Waxing Gibbous3Thu
4Fri11:415.910:536.75:03-0.34:582.36:427:33Waxing Gibbous4Fri
5Sat12:166.05:41-0.15:432.06:437:31Full Moon5Sat
6Sun12:476.06:150.16:241.76:447:30Full Moon6Sun
7Mon12:246.31:146.16:450.47:021.56:457:28Full Moon7Mon
8Tue1:066.11:386.17:140.87:381.36:457:27Full Moon8Tue
9Wed1:485.82:016.27:411.38:141.26:467:25Waning Gibbous9Wed
10Thu2:315.42:236.28:091.88:501.16:477:24Waning Gibbous10Thu
11Fri3:185.12:486.38:382.39:291.16:487:22Waning Gibbous11Fri
12Sat4:134.83:196.29:112.810:161.16:497:21Waning Gibbous12Sat
13Sun5:224.53:596.19:533.311:161.16:507:19Third Quarter13Sun
14Mon6:454.54:526.010:543.66:507:18Third Quarter14Mon
15Tue8:054.65:586.012:281.012:203.86:517:16Third Quarter15Tue
16Wed9:074.87:116.01:410.81:413.66:527:14Third Quarter16Wed
17Thu9:525.18:206.22:430.52:443.36:537:13Waning Crescent17Thu
18Fri10:295.49:216.53:330.13:362.86:547:11Waning Crescent18Fri
19Sat11:025.710:186.74:16-0.14:242.26:557:10Waning Crescent19Sat
20Sun11:346.011:126.84:56-0.25:091.56:567:08New Moon20Sun
21Mon12:056.45:34-0.15:550.96:567:07New Moon21Mon
22Tue12:066.712:376.86:120.36:420.36:577:05New Moon22Tue
23Wed1:016.51:107.16:500.87:30-0.26:587:04New Moon23Wed
24Thu1:586.21:467.37:301.48:21-0.46:597:02Waxing Crescent24Thu
25Fri2:585.92:267.48:132.09:16-0.57:007:00Waxing Crescent25Fri
26Sat4:045.53:117.39:012.610:18-0.37:016:59Waxing Crescent26Sat
27Sun5:175.24:046.910:003.111:27-0.17:026:57First Quarter27Sun
28Mon6:365.15:096.611:163.47:026:56First Quarter28Mon
29Tue7:515.26:266.212:430.112:433.47:036:54First Quarter29Tue
30Wed8:535.57:446.11:550.12:013.17:046:53First Quarter30Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9414750)

Common Questions About Alameda, CA Tides

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What time does the tide turn (slack tide) in Alameda, CA today?

Slack tide in Alameda, CA is approximately 9:15 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 Alameda, CA?

Alameda, 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 Alameda, 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 Alameda, CA?

Tide predictions for Alameda, 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 Alameda, CA?

Tide data for Alameda, CA is sourced from NOAA Station #9414750. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9414750.

What is the moon phase in Alameda, CA tonight?

Tonight the moon over Alameda, CA is First Quarter (47% illuminated). This places Alameda, 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