Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Monday, August 10, 2026
The tide is currently rising in Eureka, CA.
Next low tide : 4:25 pm (3.1 ft)
Next high tide : in 51m at 12:01 pm (5.6 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 6:22 am
Moon phase : Waning Crescent (5% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - Jul 1953

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed3:237.14:576.69:52-0.810:232.15:488:52Waning Gibbous1Wed
2Thu4:246.35:407.010:36-0.111:321.75:498:51Third Quarter2Thu
3Fri5:335.66:257.311:220.75:498:51Third Quarter3Fri
4Sat6:534.97:137.612:451.212:121.65:508:51Third Quarter4Sat
5Sun8:214.68:047.81:560.61:082.35:508:51Waning Crescent5Sun
6Mon9:514.78:568.03:030.02:112.95:518:51Waning Crescent6Mon
7Tue11:085.09:498.04:02-0.63:153.25:528:50Waning Crescent7Tue
8Wed12:095.34:55-1.04:163.35:528:50Waning Crescent8Wed
9Thu12:575.55:42-1.25:123.35:538:50New Moon9Thu
10Fri1:385.76:26-1.36:023.25:548:49New Moon10Fri
11Sat12:147.92:145.87:06-1.26:483.05:548:49New Moon11Sat
12Sun12:577.72:485.97:43-1.07:332.95:558:48New Moon12Sun
13Mon1:387.33:206.08:18-0.78:172.75:568:48Waxing Crescent13Mon
14Tue2:196.93:526.18:51-0.39:032.65:578:47Waxing Crescent14Tue
15Wed3:006.44:236.29:230.29:512.55:578:47Waxing Crescent15Wed
16Thu3:455.84:556.39:550.810:442.45:588:46Waxing Crescent16Thu
17Fri4:355.25:296.410:261.411:422.15:598:45First Quarter17Fri
18Sat5:364.76:066.610:582.16:008:45First Quarter18Sat
19Sun6:504.36:476.712:451.811:36 AM2.76:018:44First Quarter19Sun
20Mon8:174.27:346.91:491.412:253.26:028:43First Quarter20Mon
21Tue9:454.38:267.12:500.91:323.66:028:43Waxing Gibbous21Tue
22Wed10:564.69:197.53:450.32:433.76:038:42Waxing Gibbous22Wed
23Thu11:475.010:127.84:34-0.33:463.66:048:41Waxing Gibbous23Thu
24Fri12:295.35:19-0.84:433.46:058:40Waxing Gibbous24Fri
25Sat1:065.76:02-1.35:353.06:068:39Full Moon25Sat
26Sun1:426.06:43-1.56:262.66:078:38Full Moon26Sun
27Mon12:428.32:196.47:23-1.57:182.26:088:37Full Moon27Mon
28Tue1:328.12:556.88:02-1.38:111.76:098:36Waning Gibbous28Tue
29Wed2:247.63:337.28:42-0.89:081.46:108:35Waning Gibbous29Wed
30Thu3:207.04:137.59:220.010:071.16:118:34Waning Gibbous30Thu
31Fri4:216.24:557.710:030.811:120.86:128:33Third Quarter31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9418801)

Common Questions About Eureka, CA Tides

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

Slack tide in Eureka, CA is approximately 2:13 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 Eureka, CA?

Eureka, CA is currently in a spring phase. Tonight's moon is 5% 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 Eureka, 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 Eureka, CA?

Tide predictions for Eureka, 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 Eureka, CA?

Tide data for Eureka, CA is sourced from NOAA Station #9418801. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9418801.

What is the moon phase in Eureka, CA tonight?

Tonight the moon over Eureka, CA is Waning Crescent (5% illuminated). This places Eureka, 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