Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Monday, July 6, 2026
The tide is currently falling in Eureka, CA.
Next low tide : in 2h 20m at 10:44 am (0.7 ft)
Next high tide : 5:54 pm (6.5 ft)
Sunset today : 8:51 pm
Sunrise tomorrow : 5:52 am
Moon phase : Third Quarter (61% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - Mar 1997

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:166.95:324.910:571.310:192.96:496:08Third Quarter1Sat
2Sun5:107.06:534.912:061.06:486:09Third Quarter2Sun
3Mon6:147.18:105.11:140.66:466:10Third Quarter3Mon
4Tue7:227.39:135.512:493.22:160.16:456:11Waning Crescent4Tue
5Wed8:277.610:056.02:032.93:11-0.36:436:12Waning Crescent5Wed
6Thu9:287.910:506.53:072.44:01-0.76:426:13Waning Crescent6Thu
7Fri10:258.111:317.04:041.84:47-0.86:406:14New Moon7Fri
8Sat11:208.24:571.15:31-0.86:386:15New Moon8Sat
9Sun12:127.512:128.05:480.66:14-0.56:376:16New Moon9Sun
10Mon12:527.81:047.76:390.26:56-0.16:356:18Waxing Crescent10Mon
11Tue1:337.91:577.27:300.07:390.66:346:19Waxing Crescent11Tue
12Wed2:157.92:526.68:220.08:231.26:326:20Waxing Crescent12Wed
13Thu2:597.73:526.09:160.29:111.96:306:21Waxing Crescent13Thu
14Fri3:467.44:585.510:160.410:042.66:296:22First Quarter14Fri
15Sat4:397.06:135.211:200.711:093.06:276:23First Quarter15Sat
16Sun5:386.77:335.112:290.86:256:24First Quarter16Sun
17Mon6:436.48:445.312:233.21:350.86:246:25First Quarter17Mon
18Tue7:486.39:365.51:363.12:320.76:226:26Waxing Gibbous18Tue
19Wed8:476.410:155.82:382.93:200.66:206:27Waxing Gibbous19Wed
20Thu9:386.510:476.03:282.54:000.66:196:28Waxing Gibbous20Thu
21Fri10:236.611:166.24:112.14:350.56:176:29Waxing Gibbous21Fri
22Sat11:056.611:446.54:491.75:080.66:156:31Full Moon22Sat
23Sun11:446.65:261.35:390.76:146:32Full Moon23Sun
24Mon12:126.712:236.56:011.06:101.06:126:33Full Moon24Mon
25Tue12:406.81:026.36:370.76:401.26:106:34Full Moon25Tue
26Wed1:096.91:436.17:140.57:111.66:096:35Waning Gibbous26Wed
27Thu1:397.02:285.87:540.47:442.06:076:36Waning Gibbous27Thu
28Fri2:117.03:175.58:380.48:212.46:056:37Waning Gibbous28Fri
29Sat2:496.94:155.29:280.49:062.76:046:38Waning Gibbous29Sat
30Sun3:356.85:235.110:250.410:053.06:026:39Third Quarter30Sun
31Mon4:346.76:355.111:300.311:213.16:006:40Third Quarter31Mon
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 2:19 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 61% 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 Third Quarter (61% 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