Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Monday, July 13, 2026
The tide is currently rising in Eureka, CA.
Next low tide : 5:27 pm (3.1 ft)
Next high tide : in 4h 58m at 1:06 pm (5.7 ft)
Sunset today : 8:48 pm
Sunrise tomorrow : 5:56 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - Oct 1986

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed11:456.411:266.84:590.35:141.97:136:59Waning Crescent1Wed
2Thu12:126.85:330.35:551.27:146:57New Moon2Thu
3Fri12:136.912:407.26:060.66:360.57:156:56New Moon3Fri
4Sat1:016.81:097.66:401.07:18-0.17:166:54New Moon4Sat
5Sun1:506.71:397.97:141.58:03-0.57:176:52Waxing Crescent5Sun
6Mon2:436.42:138.17:512.18:51-0.77:186:51Waxing Crescent6Mon
7Tue3:416.02:528.18:302.79:45-0.77:196:49Waxing Crescent7Tue
8Wed4:465.63:387.99:163.310:44-0.67:206:47Waxing Crescent8Wed
9Thu6:005.44:367.510:133.711:52-0.37:216:46First Quarter9Thu
10Fri7:225.35:497.111:323.97:226:44First Quarter10Fri
11Sat8:385.67:126.81:03-0.21:053.87:236:43First Quarter11Sat
12Sun9:365.98:326.72:12-0.12:303.37:246:41Waxing Gibbous12Sun
13Mon10:216.39:436.73:120.03:372.57:256:39Waxing Gibbous13Mon
14Tue10:586.710:446.74:020.14:321.87:266:38Waxing Gibbous14Tue
15Wed11:317.111:386.64:460.45:191.07:286:36Waxing Gibbous15Wed
16Thu12:017.45:240.86:020.47:296:35Full Moon16Thu
17Fri12:286.512:307.56:001.36:420.07:306:33Full Moon17Fri
18Sat1:156.312:577.66:341.87:20-0.27:316:32Full Moon18Sat
19Sun2:016.11:247.67:062.47:58-0.37:326:30Waning Gibbous19Sun
20Mon2:465.91:517.57:392.98:36-0.27:336:29Waning Gibbous20Mon
21Tue3:335.72:197.28:113.49:160.07:346:27Waning Gibbous21Tue
22Wed4:245.42:516.98:463.810:010.27:356:26Waning Gibbous22Wed
23Thu5:225.23:306.69:264.110:520.57:366:25Waning Gibbous23Thu
24Fri6:305.14:216.210:224.311:510.87:386:23Third Quarter24Fri
25Sat7:405.15:315.911:464.37:396:22Third Quarter25Sat
26Sun7:375.35:515.712:530.912:174.16:405:20Third Quarter26Sun
27Mon8:185.67:075.712:520.91:283.66:415:19Third Quarter27Mon
28Tue8:516.08:145.81:430.82:232.86:425:18Waning Crescent28Tue
29Wed9:216.59:146.02:270.93:102.06:435:17Waning Crescent29Wed
30Thu9:507.010:106.23:071.03:531.16:445:15Waning Crescent30Thu
31Fri10:207.611:046.33:461.34:350.16:465:14New Moon31Fri
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 3:16 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 spring phase. Tonight's moon is 1% 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 New Moon (1% 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