Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Wednesday, July 8, 2026
The tide is currently rising in Eureka, CA.
Next low tide (tomorrow) : 2:10 am (0.7 ft)
Next high tide : in 6h 46m at 7:16 pm (7.3 ft)
Sunset today : 8:50 pm
Sunrise tomorrow : 5:53 am
Moon phase : Third Quarter (39% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - Aug 2056

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue4:285.85:266.410:301.111:252.26:148:31Third Quarter1Tue
2Wed5:255.26:076.511:101.86:158:30Third Quarter2Wed
3Thu6:334.86:516.512:282.011:54 AM2.46:168:29Third Quarter3Thu
4Fri7:514.57:386.61:331.712:472.96:178:28Third Quarter4Fri
5Sat9:134.68:286.82:351.41:483.36:188:27Waning Crescent5Sat
6Sun10:244.89:177.03:300.92:493.46:198:25Waning Crescent6Sun
7Mon11:195.110:057.24:180.43:453.46:208:24Waning Crescent7Mon
8Tue12:025.45:010.04:353.36:218:23Waning Crescent8Tue
9Wed12:395.75:41-0.45:203.16:228:22New Moon9Wed
10Thu1:156.06:19-0.76:042.86:238:20New Moon10Thu
11Fri12:187.91:506.26:56-0.96:472.56:248:19New Moon11Fri
12Sat1:017.92:256.47:33-0.97:322.16:258:18New Moon12Sat
13Sun1:467.73:016.78:10-0.78:201.86:268:16Waxing Crescent13Sun
14Mon2:347.43:386.98:49-0.39:131.66:278:15Waxing Crescent14Mon
15Tue3:266.94:187.19:290.310:101.36:288:13Waxing Crescent15Tue
16Wed4:266.25:027.310:121.011:131.16:298:12First Quarter16Wed
17Thu5:355.75:517.411:011.76:308:11First Quarter17Thu
18Fri6:545.26:477.512:230.811:58 AM2.46:318:09First Quarter18Fri
19Sat8:215.17:487.61:350.51:062.96:318:08First Quarter19Sat
20Sun9:445.38:517.72:440.12:193.16:328:06Waxing Gibbous20Sun
21Mon10:515.69:517.83:46-0.33:273.16:338:05Waxing Gibbous21Mon
22Tue11:435.910:477.94:40-0.64:282.86:348:03Waxing Gibbous22Tue
23Wed12:276.25:28-0.85:212.56:358:02Full Moon23Wed
24Thu1:056.46:11-0.86:092.26:368:00Full Moon24Thu
25Fri12:267.81:406.66:51-0.66:541.96:377:59Full Moon25Fri
26Sat1:107.62:136.67:28-0.37:371.76:387:57Full Moon26Sat
27Sun1:527.22:456.78:030.18:191.66:397:55Waning Gibbous27Sun
28Mon2:356.83:176.78:370.79:031.66:407:54Waning Gibbous28Mon
29Tue3:186.33:496.69:101.39:481.66:417:52Waning Gibbous29Tue
30Wed4:065.84:236.59:441.910:371.66:427:51Waning Gibbous30Wed
31Thu5:005.35:016.510:202.511:331.66:437:49Third 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 10:43 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 39% 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 (39% 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