Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Sunday, July 5, 2026
The tide is currently rising in Eureka, CA.
Next low tide : 10:08 am (0.2 ft)
Next high tide : in 2h 38m at 3:39 am (6.1 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 - Mar 2050

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:037.08:115.11:030.86:496:08First Quarter1Tue
2Wed7:086.89:185.312:413.42:070.86:486:09Waxing Gibbous2Wed
3Thu8:116.810:055.51:543.33:010.66:466:10Waxing Gibbous3Thu
4Fri9:076.810:415.82:543.03:450.56:446:11Waxing Gibbous4Fri
5Sat9:566.911:106.03:432.74:220.46:436:12Waxing Gibbous5Sat
6Sun10:396.911:386.34:262.34:560.46:416:13Full Moon6Sun
7Mon11:196.95:041.95:270.56:406:14Full Moon7Mon
8Tue12:046.511:57 AM6.85:411.55:560.76:386:15Full Moon8Tue
9Wed12:316.712:366.66:171.36:251.06:366:17Full Moon9Wed
10Thu12:596.91:156.46:531.06:541.36:356:18Waning Gibbous10Thu
11Fri1:277.01:566.17:310.97:241.76:336:19Waning Gibbous11Fri
12Sat1:567.12:415.78:120.87:552.16:326:20Waning Gibbous12Sat
13Sun3:287.14:325.39:570.79:302.57:307:21Waning Gibbous13Sun
14Mon4:067.15:345.010:500.710:142.97:287:22Third Quarter14Mon
15Tue4:547.06:464.811:520.711:143.27:277:23Third Quarter15Tue
16Wed5:556.98:034.91:000.57:257:24Third Quarter16Wed
17Thu7:076.99:115.212:353.32:070.37:237:25Third Quarter17Thu
18Fri8:227.010:065.71:593.13:080.07:227:26Waning Crescent18Fri
19Sat9:317.210:526.33:122.54:02-0.27:207:27Waning Crescent19Sat
20Sun10:357.411:346.94:151.84:51-0.37:187:29Waning Crescent20Sun
21Mon11:337.55:101.05:36-0.37:177:30New Moon21Mon
22Tue12:157.412:297.56:020.26:200.07:157:31New Moon22Tue
23Wed12:547.81:227.36:52-0.37:020.47:137:32New Moon23Wed
24Thu1:338.02:147.07:40-0.77:440.97:127:33Waxing Crescent24Thu
25Fri2:138.13:076.68:29-0.78:271.47:107:34Waxing Crescent25Fri
26Sat2:557.94:026.19:19-0.69:122.07:087:35Waxing Crescent26Sat
27Sun3:397.65:005.610:11-0.310:012.57:077:36Waxing Crescent27Sun
28Mon4:267.16:055.311:080.110:573.07:057:37First Quarter28Mon
29Tue5:206.67:165.112:090.57:037:38First Quarter29Tue
30Wed6:236.28:285.112:063.21:150.77:027:39First Quarter30Wed
31Thu7:315.99:285.31:243.22:180.97:007:40First Quarter31Thu
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 6:53 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 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