Tides Today & Tomorrow in Alameda, CA

TIDE TIMES for Wednesday, August 12, 2026
The tide is currently rising in Alameda, CA.
Next low tide : 6:29 am (-1.1 ft)
Next high tide (tomorrow) : in 20m at 11:29 pm (7.6 ft)
Sunset today : 8:07 pm
Sunrise tomorrow : 6:21 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #9414750
Common Questions About Tides

Alameda, CA Tides - Aug 1955

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:215.45:35-0.15:152.96:128:18Waxing Gibbous1Mon
2Tue12:545.56:09-0.25:552.86:138:17Full Moon2Tue
3Wed1:255.66:40-0.36:342.66:138:16Full Moon3Wed
4Thu12:236.71:545.87:10-0.27:112.36:148:15Full Moon4Thu
5Fri1:036.62:226.07:39-0.17:502.16:158:14Waning Gibbous5Fri
6Sat1:456.32:506.28:080.28:311.86:168:13Waning Gibbous6Sat
7Sun2:306.03:206.48:400.59:181.66:178:12Waning Gibbous7Sun
8Mon3:225.53:556.69:161.110:131.46:188:11Waning Gibbous8Mon
9Tue4:255.14:366.89:571.611:171.16:198:10Third Quarter9Tue
10Wed5:444.75:266.910:482.36:198:09Third Quarter10Wed
11Thu7:164.56:247.012:320.911:53 AM2.86:208:07Third Quarter11Thu
12Fri8:424.77:307.11:480.51:123.16:218:06Third Quarter12Fri
13Sat9:515.08:367.32:570.02:283.16:228:05Waning Crescent13Sat
14Sun10:475.49:387.43:56-0.43:362.86:238:04Waning Crescent14Sun
15Mon11:345.710:377.54:48-0.74:362.56:248:03Waning Crescent15Mon
16Tue12:176.05:35-0.85:312.16:258:01New Moon16Tue
17Wed12:576.26:18-0.76:221.76:258:00New Moon17Wed
18Thu12:237.21:356.46:58-0.57:121.56:267:59New Moon18Thu
19Fri1:146.92:116.57:36-0.18:011.26:277:57Waxing Crescent19Fri
20Sat2:046.42:456.68:120.58:491.16:287:56Waxing Crescent20Sat
21Sun2:555.93:196.68:491.19:391.16:297:55Waxing Crescent21Sun
22Mon3:505.43:546.59:281.710:321.26:307:53Waxing Crescent22Mon
23Tue4:525.04:336.410:112.311:321.26:317:52First Quarter23Tue
24Wed6:044.75:196.211:032.86:317:51First Quarter24Wed
25Thu7:234.66:136.112:381.212:093.26:327:49First Quarter25Thu
26Fri8:384.77:146.11:451.11:203.36:337:48First Quarter26Fri
27Sat9:374.98:156.22:460.82:263.26:347:47Waxing Gibbous27Sat
28Sun10:245.19:106.33:370.63:223.06:357:45Waxing Gibbous28Sun
29Mon11:025.39:596.44:200.44:102.76:367:44Waxing Gibbous29Mon
30Tue11:365.510:456.54:570.24:522.46:377:42Waxing Gibbous30Tue
31Wed12:075.75:310.15:322.16:377:41Full Moon31Wed
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 2:59 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 Alameda, CA?

Alameda, CA is currently in a spring phase. Tonight's moon is 1% 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 (1% 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