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 39m 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 - Jul 1942

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed2:137.23:596.39:04-1.29:222.35:508:35Waning Gibbous1Wed
2Thu3:086.64:486.39:52-0.810:262.25:518:34Waning Gibbous2Thu
3Fri4:076.05:376.410:41-0.211:342.05:518:34Third Quarter3Fri
4Sat5:135.46:276.411:330.45:528:34Third Quarter4Sat
5Sun6:274.97:166.512:431.812:261.05:528:34Third Quarter5Sun
6Mon7:464.68:036.61:511.41:221.65:538:34Third Quarter6Mon
7Tue9:004.68:476.72:531.02:172.05:538:34Waning Crescent7Tue
8Wed10:074.89:296.83:460.63:102.35:548:33Waning Crescent8Wed
9Thu11:035.010:086.84:330.24:002.65:548:33Waning Crescent9Thu
10Fri11:535.110:456.85:150.04:462.75:558:33Waning Crescent10Fri
11Sat12:375.35:53-0.25:302.95:568:32New Moon11Sat
12Sun1:175.46:28-0.36:112.95:568:32New Moon12Sun
13Mon1:545.57:00-0.36:512.95:578:32New Moon13Mon
14Tue12:336.72:285.57:31-0.47:292.95:588:31New Moon14Tue
15Wed1:106.63:015.68:01-0.38:072.85:588:31Waxing Crescent15Wed
16Thu1:486.43:345.78:32-0.38:482.75:598:30Waxing Crescent16Thu
17Fri2:286.24:075.89:05-0.19:342.66:008:30Waxing Crescent17Fri
18Sat3:145.84:436.09:420.210:282.46:018:29Waxing Crescent18Sat
19Sun4:095.45:246.210:240.611:312.16:018:28First Quarter19Sun
20Mon5:165.06:096.411:131.16:028:28First Quarter20Mon
21Tue6:394.76:596.712:411.712:101.66:038:27First Quarter21Tue
22Wed8:074.67:517.01:501.11:142.06:048:26First Quarter22Wed
23Thu9:254.88:467.32:540.52:202.36:048:26Waxing Gibbous23Thu
24Fri10:325.29:407.63:52-0.23:232.56:058:25Waxing Gibbous24Fri
25Sat11:305.510:337.84:46-0.74:242.56:068:24Waxing Gibbous25Sat
26Sun12:225.85:37-1.15:212.46:078:23Full Moon26Sun
27Mon1:116.16:25-1.26:172.36:088:23Full Moon27Mon
28Tue12:197.71:566.37:11-1.27:112.16:088:22Full Moon28Tue
29Wed1:107.52:406.47:56-1.08:052.06:098:21Waning Gibbous29Wed
30Thu2:027.13:236.58:39-0.79:001.96:108:20Waning Gibbous30Thu
31Fri2:556.64:066.59:22-0.29:571.86:118:19Waning Gibbous31Fri
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