40.8067’ N, 124.1670’ W

Eureka, CA

58°
H -°
L 57°
SSW
5mph
High tide
5:47 am

Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Thursday, September 3, 2026
The tide is currently rising in Eureka, CA.
Next low tide : 10:14 am (3.1 ft)
Next high tide : in 3h 21m at 5:47 am (5.0 ft)
Sunset today : 7:45 pm
Sunrise tomorrow : 6:45 am
Moon phase : Third Quarter (56% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - Jun 1907

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:057.25:086.19:51-1.210:092.84:477:40Third Quarter1Sat
2Sun4:106.56:066.210:48-0.711:272.64:467:41Third Quarter2Sun
3Mon5:225.97:006.411:46-0.14:467:42Third Quarter3Mon
4Tue6:395.47:496.712:442.112:430.54:467:43Third Quarter4Tue
5Wed7:565.18:337.01:531.51:371.04:457:43Waning Crescent5Wed
6Thu9:085.19:137.22:520.82:271.54:457:44Waning Crescent6Thu
7Fri10:115.19:497.33:410.23:141.94:457:45Waning Crescent7Fri
8Sat11:065.310:237.44:24-0.23:572.34:447:45Waning Crescent8Sat
9Sun11:545.410:567.45:03-0.64:372.64:447:46New Moon9Sun
10Mon12:375.55:40-0.85:162.84:447:46New Moon10Mon
11Tue1:185.56:16-0.95:543.04:447:47New Moon11Tue
12Wed12:027.31:575.56:52-0.96:323.24:447:47New Moon12Wed
13Thu12:367.12:375.57:28-0.87:113.34:447:48Waxing Crescent13Thu
14Fri1:116.93:185.48:05-0.67:533.44:447:48Waxing Crescent14Fri
15Sat1:496.64:015.58:44-0.48:413.44:447:49Waxing Crescent15Sat
16Sun2:316.24:455.59:24-0.19:383.44:447:49Waxing Crescent16Sun
17Mon3:205.85:295.710:070.210:443.24:447:50First Quarter17Mon
18Tue4:225.46:126.010:530.511:542.74:447:50First Quarter18Tue
19Wed5:345.06:556.311:420.94:447:50First Quarter19Wed
20Thu6:534.97:376.81:002.112:351.34:447:51First Quarter20Thu
21Fri8:104.98:197.32:001.21:291.74:447:51Waxing Gibbous21Fri
22Sat9:225.19:027.82:540.32:232.04:457:51Waxing Gibbous22Sat
23Sun10:265.49:468.33:45-0.63:162.34:457:51Waxing Gibbous23Sun
24Mon11:255.710:338.64:34-1.44:092.44:457:51Full Moon24Mon
25Tue12:206.05:22-1.95:012.54:457:52Full Moon25Tue
26Wed1:126.26:10-2.35:542.54:467:52Full Moon26Wed
27Thu12:108.72:036.36:58-2.36:482.54:467:52Waning Gibbous27Thu
28Fri1:028.42:536.47:47-2.17:452.54:467:52Waning Gibbous28Fri
29Sat1:567.93:446.58:36-1.68:472.54:477:52Waning Gibbous29Sat
30Sun2:537.24:356.69:25-1.09:542.44:477:52Third Quarter30Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9418801)

Common Questions About Eureka, CA Tides

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Is this week a spring tide or neap tide in Eureka, CA?

Eureka, CA is currently in a neap phase. Tonight's moon is 56% 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 minimum.

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 (56% illuminated). This places Eureka, CA in a neap tide cycle, so tidal ranges are near their weekly minimum 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