Tides Today & Tomorrow in Alameda, CA

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently falling in Alameda, CA.
Next low tide : in 5h 03m at 11:50 pm (1.2 ft)
Next high tide (tomorrow) : 6:19 am (4.6 ft)
Sunset today : 7:58 pm
Sunrise tomorrow : 6:27 am
Moon phase : First Quarter (37% illuminated)
Tide Station Location : Station #9414750
Common Questions About Tides

Alameda, CA Tides - Aug 1944

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue11:185.210:037.34:29-0.14:003.06:128:18Waxing Gibbous1Tue
2Wed12:065.55:14-0.54:532.96:138:17Waxing Gibbous2Wed
3Thu12:505.75:59-0.95:432.76:148:16Full Moon3Thu
4Fri1:335.96:42-1.16:342.46:158:15Full Moon4Fri
5Sat12:347.72:146.27:26-1.27:262.26:168:13Full Moon5Sat
6Sun1:267.52:556.48:09-1.08:201.96:178:12Waning Gibbous6Sun
7Mon2:207.13:376.58:53-0.69:181.76:178:11Waning Gibbous7Mon
8Tue3:186.64:216.79:38-0.110:211.56:188:10Waning Gibbous8Tue
9Wed4:225.95:086.810:270.611:301.36:198:09Third Quarter9Wed
10Thu5:365.35:586.911:211.36:208:08Third Quarter10Thu
11Fri6:595.06:536.912:431.012:222.06:218:07Third Quarter11Fri
12Sat8:224.97:496.91:550.71:292.56:228:05Third Quarter12Sat
13Sun9:365.18:457.03:010.32:352.76:238:04Waning Crescent13Sun
14Mon10:375.49:377.03:590.03:352.86:238:03Waning Crescent14Mon
15Tue11:285.610:257.04:48-0.24:292.86:248:02Waning Crescent15Tue
16Wed12:125.85:31-0.35:172.76:258:01Waning Crescent16Wed
17Thu12:515.86:09-0.26:012.66:267:59New Moon17Thu
18Fri1:265.86:43-0.26:412.46:277:58New Moon18Fri
19Sat12:316.71:575.87:140.07:192.36:287:57New Moon19Sat
20Sun1:086.52:265.87:440.27:562.26:297:55New Moon20Sun
21Mon1:466.22:535.88:120.58:322.16:297:54Waxing Crescent21Mon
22Tue2:255.93:195.98:410.89:102.06:307:53Waxing Crescent22Tue
23Wed3:075.53:475.99:121.29:531.96:317:51Waxing Crescent23Wed
24Thu3:555.24:206.09:461.610:441.86:327:50Waxing Crescent24Thu
25Fri4:574.84:596.110:282.111:461.66:337:48First Quarter25Fri
26Sat6:164.55:486.211:212.66:347:47First Quarter26Sat
27Sun7:434.56:446.312:561.412:293.06:357:46First Quarter27Sun
28Mon8:594.77:466.52:040.91:423.16:357:44First Quarter28Mon
29Tue10:005.18:466.83:040.42:483.16:367:43Waxing Gibbous29Tue
30Wed10:505.49:447.13:57-0.13:462.86:377:41Waxing Gibbous30Wed
31Thu11:345.710:407.44:46-0.54:392.56:387:40Waxing Gibbous31Thu
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 3:04 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 transitional phase. Tonight's moon is 37% 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 shifting between spring and neap.

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 (37% illuminated). This places Alameda, CA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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