Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Wednesday, July 8, 2026
The tide is currently falling in Eureka, CA.
Next low tide : in 2h 40m at 12:11 pm (2.1 ft)
Next high tide : 7:16 pm (7.3 ft)
Sunset today : 8:50 pm
Sunrise tomorrow : 5:53 am
Moon phase : Third Quarter (39% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - May 2056

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon1:328.32:526.48:02-1.87:551.86:138:13Waning Gibbous1Mon
2Tue2:158.23:506.18:53-1.88:452.36:128:14Waning Gibbous2Tue
3Wed3:027.84:515.99:46-1.59:402.76:118:15Waning Gibbous3Wed
4Thu3:537.35:565.710:42-1.110:443.06:098:16Third Quarter4Thu
5Fri4:516.77:025.611:41-0.611:583.16:088:18Third Quarter5Fri
6Sat5:576.18:065.712:43-0.16:078:19Third Quarter6Sat
7Sun7:105.79:025.91:192.91:440.26:068:20Third Quarter7Sun
8Mon8:245.49:476.12:332.52:410.66:058:21Waning Crescent8Mon
9Tue9:325.310:246.33:341.93:300.86:048:22Waning Crescent9Tue
10Wed10:325.310:566.54:231.34:131.16:038:23Waning Crescent10Wed
11Thu11:245.411:256.85:050.84:511.46:028:24Waning Crescent11Thu
12Fri12:115.45:430.35:271.76:018:25New Moon12Fri
13Sat12:545.56:18-0.16:012.06:008:26New Moon13Sat
14Sun12:227.01:365.56:53-0.46:352.35:598:27New Moon14Sun
15Mon12:517.12:185.57:28-0.67:082.65:588:28New Moon15Mon
16Tue1:207.13:005.48:03-0.77:422.95:578:28Waxing Crescent16Tue
17Wed1:517.03:455.38:41-0.78:183.15:568:29Waxing Crescent17Wed
18Thu2:246.84:335.39:21-0.78:593.35:558:30Waxing Crescent18Thu
19Fri3:016.65:245.210:05-0.59:503.45:548:31Waxing Crescent19Fri
20Sat3:476.46:185.310:53-0.410:543.45:538:32First Quarter20Sat
21Sun4:466.07:115.511:46-0.25:538:33First Quarter21Sun
22Mon5:585.78:015.812:113.212:430.05:528:34First Quarter22Mon
23Tue7:175.58:476.31:282.71:400.35:518:35First Quarter23Tue
24Wed8:365.59:306.82:361.92:350.55:518:36Waxing Gibbous24Wed
25Thu9:505.610:127.43:370.93:280.85:508:37Waxing Gibbous25Thu
26Fri10:575.710:547.94:31-0.14:181.15:498:37Waxing Gibbous26Fri
27Sat11:595.911:368.35:22-1.05:081.55:498:38Full Moon27Sat
28Sun12:586.16:11-1.75:561.85:488:39Full Moon28Sun
29Mon12:208.51:546.27:00-2.16:452.15:488:40Full Moon29Mon
30Tue1:048.52:496.27:48-2.27:352.45:478:41Waning Gibbous30Tue
31Wed1:508.33:436.18:37-2.18:282.75:478:41Waning Gibbous31Wed
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 3:43 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 transitional phase. Tonight's moon is 39% 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 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 Third Quarter (39% illuminated). This places Eureka, 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