Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Tuesday, July 7, 2026
The tide is currently falling in Eureka, CA.
Next low tide (tomorrow) : in 2h 20m at 11:54 pm (2.1 ft)
Next high tide : 5:46 am (5.0 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 - Aug 2053

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri1:247.22:436.27:51-0.27:532.46:148:31Waning Gibbous1Fri
2Sat2:017.03:156.38:230.08:352.36:158:30Waning Gibbous2Sat
3Sun2:416.73:496.58:560.39:202.26:158:29Waning Gibbous3Sun
4Mon3:256.34:246.69:300.710:102.06:168:28Waning Gibbous4Mon
5Tue4:165.85:036.810:071.211:081.86:178:27Third Quarter5Tue
6Wed5:185.45:486.910:501.76:188:26Third Quarter6Wed
7Thu6:325.06:397.212:131.511:43 AM2.26:198:24Third Quarter7Thu
8Fri7:544.97:377.41:221.012:472.66:208:23Third Quarter8Fri
9Sat9:145.18:387.72:290.51:582.86:218:22Waning Crescent9Sat
10Sun10:225.49:388.03:31-0.23:082.86:228:21Waning Crescent10Sun
11Mon11:205.910:368.34:26-0.74:112.56:238:19Waning Crescent11Mon
12Tue12:096.35:17-1.15:092.16:248:18New Moon12Tue
13Wed12:546.76:04-1.36:031.76:258:17New Moon13Wed
14Thu12:248.51:377.06:49-1.36:551.46:268:15New Moon14Thu
15Fri1:168.32:197.27:33-1.07:471.26:278:14Waxing Crescent15Fri
16Sat2:067.83:007.38:15-0.58:381.06:288:12Waxing Crescent16Sat
17Sun2:587.33:427.38:570.19:311.06:298:11Waxing Crescent17Sun
18Mon3:516.64:247.29:400.810:271.16:308:10Waxing Crescent18Mon
19Tue4:485.95:097.110:251.611:271.26:318:08First Quarter19Tue
20Wed5:535.45:586.911:142.36:328:07First Quarter20Wed
21Thu7:065.06:516.712:321.312:102.86:338:05First Quarter21Thu
22Fri8:274.97:486.61:401.21:163.26:348:04First Quarter22Fri
23Sat9:425.08:456.72:431.02:233.36:358:02Waxing Gibbous23Sat
24Sun10:395.39:396.83:380.83:233.26:368:01Waxing Gibbous24Sun
25Mon11:215.510:276.94:250.64:143.06:377:59Waxing Gibbous25Mon
26Tue11:565.811:117.15:050.34:582.76:387:57Waxing Gibbous26Tue
27Wed12:286.05:410.25:382.46:397:56Full Moon27Wed
28Thu12:586.36:140.16:172.16:407:54Full Moon28Thu
29Fri12:317.21:286.56:470.16:541.86:417:53Full Moon29Fri
30Sat1:107.11:596.77:180.37:331.56:427:51Full Moon30Sat
31Sun1:506.92:296.87:510.58:131.36:437:50Waning Gibbous31Sun
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 2:50 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 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