Tides Today & Tomorrow in Alameda, CA

TIDE TIMES for Wednesday, August 12, 2026
The tide is currently rising in Alameda, CA.
Next low tide : 6:25 pm (2.2 ft)
Next high tide : in 4h 23m at 1:14 pm (6.0 ft)
Sunset today : 8:05 pm
Sunrise tomorrow : 6:22 am
Moon phase : New Moon (0% illuminated)
Tide Station Location : Station #9414750
Common Questions About Tides

Alameda, CA Tides - Sep 1954

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed3:045.43:006.38:401.89:321.26:397:39Waxing Crescent1Wed
2Thu3:555.03:296.29:142.310:191.36:397:37Waxing Crescent2Thu
3Fri4:574.74:066.29:542.811:151.36:407:36First Quarter3Fri
4Sat6:114.54:536.110:463.26:417:34First Quarter4Sat
5Sun7:334.55:526.012:231.211:59 AM3.56:427:33First Quarter5Sun
6Mon8:434.77:006.01:331.11:183.56:437:31First Quarter6Mon
7Tue9:374.98:066.22:350.82:253.36:447:30Waxing Gibbous7Tue
8Wed10:195.29:066.43:260.43:203.06:447:28Waxing Gibbous8Wed
9Thu10:555.510:006.64:090.14:082.56:457:27Waxing Gibbous9Thu
10Fri11:275.810:526.74:480.04:522.06:467:25Waxing Gibbous10Fri
11Sat11:596.111:426.85:25-0.15:361.56:477:24Full Moon11Sat
12Sun12:306.46:020.16:200.96:487:22Full Moon12Sun
13Mon12:346.71:026.86:380.47:060.56:497:21Full Moon13Mon
14Tue1:276.51:377.17:160.87:540.16:497:19Waning Gibbous14Tue
15Wed2:236.12:147.37:561.48:46-0.16:507:18Waning Gibbous15Wed
16Thu3:235.72:567.38:401.99:43-0.16:517:16Waning Gibbous16Thu
17Fri4:315.43:447.29:312.510:490.06:527:14Third Quarter17Fri
18Sat5:475.14:426.910:353.06:537:13Third Quarter18Sat
19Sun7:075.15:516.612:030.111:55 AM3.26:547:11Third Quarter19Sun
20Mon8:205.37:076.41:190.21:183.16:557:10Third Quarter20Mon
21Tue9:195.58:206.42:270.12:312.76:557:08Waning Crescent21Tue
22Wed10:075.89:256.33:250.13:322.36:567:07Waning Crescent22Wed
23Thu10:486.010:216.34:120.14:251.86:577:05Waning Crescent23Thu
24Fri11:246.211:126.24:530.35:111.46:587:04Waning Crescent24Fri
25Sat11:566.311:596.15:290.65:531.06:597:02New Moon25Sat
26Sun11:256.311:455.95:010.95:320.86:006:00New Moon26Sun
27Mon11:506.45:331.36:080.66:015:59New Moon27Mon
28Tue12:295.712:146.46:031.86:430.56:015:57New Moon28Tue
29Wed1:135.512:386.46:332.27:170.56:025:56Waxing Crescent29Wed
30Thu1:585.31:046.37:052.67:540.66:035:54Waxing Crescent30Thu
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 3:49 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 spring phase. Tonight's moon is 0% 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 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 New Moon (0% illuminated). This places Alameda, 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