Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Saturday, June 27, 2026
The tide is currently falling in Eureka, CA.
Next low tide : in 3h 24m at 5:29 am (-0.5 ft)
Next high tide : 12:47 pm (5.1 ft)
Sunset today : 8:52 pm
Sunrise tomorrow : 5:47 am
Moon phase : Waxing Gibbous (96% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - Jun 2012

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri10:425.210:138.14:06-0.43:382.05:468:42Waxing Gibbous1Fri
2Sat11:465.511:018.44:58-1.24:332.25:468:42Waxing Gibbous2Sat
3Sun12:435.85:49-1.85:272.35:468:43Full Moon3Sun
4Mon1:376.06:38-2.26:202.35:458:44Full Moon4Mon
5Tue12:398.62:286.27:26-2.37:132.45:458:45Full Moon5Tue
6Wed1:298.43:176.28:13-2.28:082.45:458:45Waning Gibbous6Wed
7Thu2:207.94:066.39:01-1.89:052.45:458:46Waning Gibbous7Thu
8Fri3:137.34:556.39:48-1.210:062.45:448:46Waning Gibbous8Fri
9Sat4:086.65:446.410:35-0.511:122.35:448:47Third Quarter9Sat
10Sun5:095.86:326.411:230.25:448:47Third Quarter10Sun
11Mon6:155.17:196.612:232.112:120.95:448:48Third Quarter11Mon
12Tue7:294.78:036.71:331.71:031.65:448:48Third Quarter12Tue
13Wed8:484.58:466.82:381.31:552.15:448:49Waning Crescent13Wed
14Thu10:034.59:277.03:330.82:472.65:448:49Waning Crescent14Thu
15Fri11:074.710:077.14:200.33:372.85:448:50Waning Crescent15Fri
16Sat11:584.910:467.25:02-0.14:243.05:448:50Waning Crescent16Sat
17Sun12:415.15:40-0.45:073.15:448:50New Moon17Sun
18Mon1:195.36:17-0.75:483.15:448:51New Moon18Mon
19Tue12:017.41:565.56:53-0.96:283.15:458:51New Moon19Tue
20Wed12:387.42:325.67:28-1.07:083.05:458:51New Moon20Wed
21Thu1:157.33:085.78:03-1.07:503.05:458:51Waxing Crescent21Thu
22Fri1:547.13:445.88:38-0.98:352.95:458:51Waxing Crescent22Fri
23Sat2:356.84:226.09:14-0.69:252.75:458:52Waxing Crescent23Sat
24Sun3:206.45:006.29:52-0.310:222.55:468:52Waxing Crescent24Sun
25Mon4:145.95:406.510:320.211:262.15:468:52First Quarter25Mon
26Tue5:195.46:236.811:160.85:478:52First Quarter26Tue
27Wed6:364.97:107.212:351.612:061.45:478:52First Quarter27Wed
28Thu8:004.78:017.61:441.01:042.05:478:52First Quarter28Thu
29Fri9:234.88:548.02:500.22:072.45:488:52Waxing Gibbous29Fri
30Sat10:385.09:488.33:50-0.63:112.65:488:52Waxing Gibbous30Sat
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 9:08 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 Eureka, CA?

Eureka, CA is currently in a spring phase. Tonight's moon is 96% 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 Waxing Gibbous (96% 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