Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Saturday, June 20, 2026
The tide is currently falling in Eureka, CA.
Next low tide (tomorrow) : in 47m at 10:34 pm (2.5 ft)
Next high tide : 4:32 am (6.4 ft)
Sunset today : 8:51 pm
Sunrise tomorrow : 5:44 am
Moon phase : Waxing Crescent (28% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - Jun 2024

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat8:195.29:017.12:191.62:030.85:468:42Waning Crescent1Sat
2Sun9:395.19:427.63:230.62:561.45:468:43Waning Crescent2Sun
3Mon10:535.210:248.14:19-0.43:472.05:468:43Waning Crescent3Mon
4Tue12:005.45:10-1.14:382.45:458:44Waning Crescent4Tue
5Wed12:595.65:58-1.75:272.85:458:45New Moon5Wed
6Thu1:535.76:44-1.96:163.05:458:45New Moon6Thu
7Fri12:318.22:435.77:29-1.97:053.25:458:46New Moon7Fri
8Sat1:158.03:305.78:14-1.77:533.35:448:46Waxing Crescent8Sat
9Sun1:597.64:175.68:58-1.48:443.45:448:47Waxing Crescent9Sun
10Mon2:457.15:035.59:42-0.99:383.45:448:47Waxing Crescent10Mon
11Tue3:326.55:475.510:25-0.410:393.35:448:48Waxing Crescent11Tue
12Wed4:235.96:305.611:090.111:463.15:448:48First Quarter12Wed
13Thu5:225.37:105.811:520.75:448:49First Quarter13Thu
14Fri6:294.87:486.112:572.812:361.25:448:49First Quarter14Fri
15Sat7:444.48:246.42:032.21:201.85:448:50First Quarter15Sat
16Sun9:024.38:596.73:001.62:062.35:448:50Waxing Gibbous16Sun
17Mon10:154.49:357.03:490.92:532.85:448:50Waxing Gibbous17Mon
18Tue11:204.710:117.34:330.23:403.15:448:51Waxing Gibbous18Tue
19Wed12:154.95:14-0.44:263.35:458:51Waxing Gibbous19Wed
20Thu1:035.25:54-0.95:113.55:458:51Full Moon20Thu
21Fri1:475.46:34-1.35:563.55:458:51Full Moon21Fri
22Sat12:107.92:305.57:15-1.66:413.45:458:52Full Moon22Sat
23Sun12:538.03:125.67:57-1.77:293.45:468:52Full Moon23Sun
24Mon1:387.93:545.78:39-1.78:213.25:468:52Waning Gibbous24Mon
25Tue2:277.74:375.99:23-1.59:193.05:468:52Waning Gibbous25Tue
26Wed3:207.25:206.210:07-1.110:242.75:478:52Waning Gibbous26Wed
27Thu4:216.56:036.510:52-0.511:362.35:478:52Third Quarter27Thu
28Fri5:305.86:476.911:380.35:478:52Third Quarter28Fri
29Sat6:495.17:327.312:511.712:281.15:488:52Third Quarter29Sat
30Sun8:164.88:187.72:030.91:221.95:488:52Waning Crescent30Sun
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 1:33 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 transitional phase. Tonight's moon is 28% 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 Waxing Crescent (28% 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