Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Sunday, July 5, 2026
The tide is currently rising in Eureka, CA.
Next low tide : 10:49 pm (2.6 ft)
Next high tide : in 2h 00m at 5:19 pm (6.2 ft)
Sunset today : 8:51 pm
Sunrise tomorrow : 5:51 am
Moon phase : Waning Gibbous (71% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - Jun 1998

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon5:355.67:195.912:030.35:478:41First Quarter1Mon
2Tue6:425.18:076.112:592.612:560.85:468:42First Quarter2Tue
3Wed7:534.88:506.32:082.21:481.35:468:43First Quarter3Wed
4Thu9:044.79:296.53:071.72:381.65:468:43Waxing Gibbous4Thu
5Fri10:094.710:056.73:561.23:251.95:458:44Waxing Gibbous5Fri
6Sat11:054.910:417.04:390.64:082.25:458:45Waxing Gibbous6Sat
7Sun11:555.111:157.25:180.14:502.45:458:45Waxing Gibbous7Sun
8Mon12:415.35:55-0.35:292.65:458:46Full Moon8Mon
9Tue1:235.56:31-0.76:082.75:448:47Full Moon9Tue
10Wed12:247.42:055.67:08-0.96:472.85:448:47Full Moon10Wed
11Thu12:597.52:475.77:45-1.17:272.95:448:48Full Moon11Thu
12Fri1:367.43:305.78:24-1.28:112.95:448:48Waning Gibbous12Fri
13Sat2:167.24:145.89:05-1.19:002.95:448:49Waning Gibbous13Sat
14Sun3:017.05:015.99:48-0.99:572.95:448:49Waning Gibbous14Sun
15Mon3:546.65:486.110:35-0.611:022.75:448:49Third Quarter15Mon
16Tue4:566.16:376.411:24-0.15:448:50Third Quarter16Tue
17Wed6:085.67:276.712:142.312:180.35:448:50Third Quarter17Wed
18Thu7:275.38:167.21:271.71:150.95:448:50Third Quarter18Thu
19Fri8:485.19:057.62:351.02:131.35:448:51Waning Crescent19Fri
20Sat10:045.39:538.03:360.13:111.75:458:51Waning Crescent20Sat
21Sun11:125.510:418.34:32-0.64:082.05:458:51Waning Crescent21Sun
22Mon12:125.85:23-1.25:012.25:458:51New Moon22Mon
23Tue1:066.06:11-1.65:532.35:458:52New Moon23Tue
24Wed12:148.41:566.16:57-1.86:442.45:468:52New Moon24Wed
25Thu1:008.22:436.27:41-1.77:332.55:468:52New Moon25Thu
26Fri1:457.93:286.28:24-1.48:232.65:468:52Waxing Crescent26Fri
27Sat2:307.44:136.29:07-1.09:152.75:478:52Waxing Crescent27Sat
28Sun3:166.84:576.29:50-0.510:102.75:478:52Waxing Crescent28Sun
29Mon4:056.25:416.210:320.111:102.75:478:52First Quarter29Mon
30Tue4:595.66:256.211:150.75:488:52First Quarter30Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9418801)

Common Questions About Eureka, CA Tides

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

Slack tide in Eureka, CA is approximately 8:04 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 71% 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 Waning Gibbous (71% 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