Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Saturday, June 27, 2026
The tide is currently rising in Eureka, CA.
Next low tide (tomorrow) : 6:07 am (-0.7 ft)
Next high tide : in 3h 51m at 11:02 pm (7.4 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 2011

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed1:425.46:40-1.06:113.05:478:41New Moon1Wed
2Thu12:247.52:235.57:18-1.26:513.15:468:42New Moon2Thu
3Fri1:027.53:045.57:56-1.37:343.15:468:43Waxing Crescent3Fri
4Sat1:417.43:465.68:36-1.38:203.05:468:43Waxing Crescent4Sat
5Sun2:257.24:295.79:17-1.29:132.95:458:44Waxing Crescent5Sun
6Mon3:136.85:135.910:00-0.910:142.85:458:45Waxing Crescent6Mon
7Tue4:106.35:576.210:45-0.411:232.45:458:45First Quarter7Tue
8Wed5:165.86:436.511:330.15:458:46First Quarter8Wed
9Thu6:335.27:307.012:361.912:250.75:448:46First Quarter9Thu
10Fri7:564.98:187.41:481.21:211.45:448:47Waxing Gibbous10Fri
11Sat9:194.99:077.82:540.32:191.95:448:48Waxing Gibbous11Sat
12Sun10:355.09:568.13:54-0.53:182.35:448:48Waxing Gibbous12Sun
13Mon11:425.310:458.34:48-1.14:162.55:448:48Waxing Gibbous13Mon
14Tue12:395.65:38-1.65:112.75:448:49Full Moon14Tue
15Wed1:305.86:25-1.96:032.75:448:49Full Moon15Wed
16Thu12:218.32:165.97:10-1.96:542.75:448:50Full Moon16Thu
17Fri1:078.03:006.07:54-1.77:442.75:448:50Waning Gibbous17Fri
18Sat1:537.63:436.08:36-1.48:352.75:448:50Waning Gibbous18Sat
19Sun2:397.14:246.19:17-0.99:282.75:448:51Waning Gibbous19Sun
20Mon3:266.55:046.19:57-0.310:242.65:458:51Waning Gibbous20Mon
21Tue4:165.85:446.210:370.311:252.55:458:51Third Quarter21Tue
22Wed5:125.26:256.311:171.05:458:51Third Quarter22Wed
23Thu6:174.77:056.412:312.211:59 AM1.65:458:52Third Quarter23Thu
24Fri7:314.37:476.61:361.812:452.25:468:52Third Quarter24Fri
25Sat8:504.28:306.82:371.41:362.75:468:52Waning Crescent25Sat
26Sun10:074.49:137.03:300.82:313.05:468:52Waning Crescent26Sun
27Mon11:104.69:567.24:170.33:253.25:478:52Waning Crescent27Mon
28Tue12:014.94:59-0.24:163.35:478:52Waning Crescent28Tue
29Wed12:445.25:39-0.75:033.35:478:52New Moon29Wed
30Thu1:235.56:18-1.05:493.15:488:52New Moon30Thu
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 2:34 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