Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Wednesday, July 1, 2026
The tide is currently falling in Eureka, CA.
Next low tide : in 3h 07m at 7:54 am (-0.9 ft)
Next high tide : 3:06 pm (5.5 ft)
Sunset today : 8:52 pm
Sunrise tomorrow : 5:49 am
Moon phase : Full Moon (97% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - Sep 2006

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri8:044.56:286.812:501.111:25 AM3.96:437:49First Quarter1Fri
2Sat9:334.77:417.02:020.71:024.16:447:47First Quarter2Sat
3Sun10:325.08:527.33:060.22:313.96:457:46Waxing Gibbous3Sun
4Mon11:135.49:567.64:01-0.33:403.46:467:44Waxing Gibbous4Mon
5Tue11:485.910:547.94:48-0.74:382.76:477:42Waxing Gibbous5Tue
6Wed12:226.45:32-0.95:311.96:487:41Full Moon6Wed
7Thu12:566.96:12-0.96:221.26:497:39Full Moon7Thu
8Fri12:428.01:317.46:52-0.67:120.56:507:37Full Moon8Fri
9Sat1:367.72:067.87:310.08:030.06:517:36Waning Gibbous9Sat
10Sun2:317.12:438.08:100.78:56-0.36:527:34Waning Gibbous10Sun
11Mon3:296.53:228.18:501.69:52-0.36:537:32Waning Gibbous11Mon
12Tue4:335.94:067.99:332.410:52-0.16:547:31Third Quarter12Tue
13Wed5:465.44:567.610:233.111:580.16:557:29Third Quarter13Wed
14Thu7:125.15:577.211:263.76:567:27Third Quarter14Thu
15Fri8:455.27:086.81:110.312:494.06:577:26Third Quarter15Fri
16Sat9:595.48:226.72:230.32:163.86:587:24Waning Crescent16Sat
17Sun10:485.69:296.73:250.33:263.46:597:22Waning Crescent17Sun
18Mon11:245.910:246.74:160.34:202.97:007:21Waning Crescent18Mon
19Tue11:536.111:126.84:570.35:032.47:017:19Waning Crescent19Tue
20Wed12:186.35:310.45:422.07:027:17New Moon20Wed
21Thu12:416.56:020.66:191.57:037:15New Moon21Thu
22Fri12:346.61:046.76:300.96:541.27:047:14New Moon22Fri
23Sat1:136.51:276.96:581.37:290.97:057:12New Moon23Sat
24Sun1:536.21:507.07:241.78:040.67:067:10Waxing Crescent24Sun
25Mon2:345.92:137.17:502.28:410.57:077:09Waxing Crescent25Mon
26Tue3:195.62:387.18:162.79:220.57:087:07Waxing Crescent26Tue
27Wed4:105.33:077.08:443.210:090.57:097:05Waxing Crescent27Wed
28Thu5:115.03:436.99:163.611:050.67:107:04First Quarter28Thu
29Fri6:264.84:366.810:004.07:117:02First Quarter29Fri
30Sat7:514.85:506.612:120.611:19 AM4.27:127:00First Quarter30Sat
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 11:30 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 97% 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 Full Moon (97% 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