Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently falling in Eureka, CA.
Next low tide : in 39m at 7:19 pm (2.5 ft)
Next high tide (tomorrow) : 1:34 am (8.4 ft)
Sunset today : 8:47 pm
Sunrise tomorrow : 5:58 am
Moon phase : New Moon (3% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - Jan 1985

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue7:327.28:564.712:312.92:291.57:414:59Waxing Gibbous1Tue
2Wed8:117.410:065.01:223.43:150.87:415:00Waxing Gibbous2Wed
3Thu8:507.711:015.32:153.73:570.27:415:01Waxing Gibbous3Thu
4Fri9:308.011:475.63:063.94:37-0.37:415:02Waxing Gibbous4Fri
5Sat10:118.23:533.95:16-0.87:415:03Full Moon5Sat
6Sun12:285.810:52 AM8.44:383.95:55-1.17:415:04Full Moon6Sun
7Mon1:076.011:35 AM8.55:233.86:35-1.37:405:05Full Moon7Mon
8Tue1:466.212:188.56:093.67:15-1.47:405:06Full Moon8Tue
9Wed2:256.31:048.36:583.57:55-1.27:405:07Waning Gibbous9Wed
10Thu3:046.51:547.87:523.28:36-0.87:405:08Waning Gibbous10Thu
11Fri3:456.82:497.18:523.09:18-0.17:405:09Waning Gibbous11Fri
12Sat4:267.13:546.39:582.610:020.67:395:10Third Quarter12Sat
13Sun5:107.45:105.611:112.110:501.57:395:11Third Quarter13Sun
14Mon5:567.76:385.112:261.57:395:12Third Quarter14Mon
15Tue6:458.08:125.01:370.87:385:13Waning Crescent15Tue
16Wed7:368.39:405.212:453.02:400.17:385:15Waning Crescent16Wed
17Thu8:298.410:495.61:513.53:36-0.57:375:16Waning Crescent17Thu
18Fri9:228.511:425.92:553.74:26-0.97:375:17Waning Crescent18Fri
19Sat10:138.63:543.75:12-1.17:365:18New Moon19Sat
20Sun12:266.211:00 AM8.54:473.65:54-1.17:365:19New Moon20Sun
21Mon1:056.311:45 AM8.35:353.46:33-1.07:355:20New Moon21Mon
22Tue1:416.412:288.06:213.37:10-0.77:345:22New Moon22Tue
23Wed2:156.41:097.67:063.17:46-0.37:345:23Waxing Crescent23Wed
24Thu2:476.51:507.07:513.08:190.27:335:24Waxing Crescent24Thu
25Fri3:206.52:336.48:392.98:510.87:325:25Waxing Crescent25Fri
26Sat3:526.63:205.89:312.89:231.47:315:26Waxing Crescent26Sat
27Sun4:256.74:175.210:282.69:552.17:305:28First Quarter27Sun
28Mon5:016.85:294.711:322.310:302.87:305:29First Quarter28Mon
29Tue5:416.96:564.412:382.07:295:30First Quarter29Tue
30Wed6:267.08:334.51:421.47:285:31First Quarter30Wed
31Thu7:167.29:534.912:183.92:380.97:275:33Waxing Gibbous31Thu
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 10:26 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 3% 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 (3% 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