Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Thursday, July 16, 2026
The tide is currently falling in Eureka, CA.
Next low tide : in 6h 06m at 8:14 am (-1.7 ft)
Next high tide : 3:15 pm (6.5 ft)
Sunset today : 8:46 pm
Sunrise tomorrow : 5:59 am
Moon phase : Waxing Crescent (8% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - Mar 2065

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun6:467.49:205.312:113.71:580.06:486:08Waning Crescent1Sun
2Mon7:597.410:115.71:363.62:59-0.16:476:09Waning Crescent2Mon
3Tue9:047.410:516.02:483.23:48-0.36:456:10Waning Crescent3Tue
4Wed10:007.411:246.43:452.64:30-0.26:446:11Waning Crescent4Wed
5Thu10:497.311:536.64:342.15:07-0.16:426:13New Moon5Thu
6Fri11:347.15:181.75:400.26:416:14New Moon6Fri
7Sat12:216.812:156.95:581.36:110.66:396:15New Moon7Sat
8Sun12:477.01:566.57:371.07:401.17:377:16New Moon8Sun
9Mon2:137.12:366.28:150.88:091.67:367:17Waxing Crescent9Mon
10Tue2:397.13:195.88:530.88:372.17:347:18Waxing Crescent10Tue
11Wed3:077.14:055.39:340.89:052.67:337:19Waxing Crescent11Wed
12Thu3:376.94:584.910:190.99:343.17:317:20Waxing Crescent12Thu
13Fri4:126.86:034.611:121.010:083.57:297:21First Quarter13Fri
14Sat4:576.67:244.412:151.17:287:22First Quarter14Sat
15Sun5:566.48:494.51:241.07:267:24First Quarter15Sun
16Mon7:086.49:514.812:313.92:290.77:247:25First Quarter16Mon
17Tue8:206.510:335.22:043.73:240.47:237:26Waxing Gibbous17Tue
18Wed9:256.711:065.73:143.34:100.17:217:27Waxing Gibbous18Wed
19Thu10:247.011:386.24:112.64:51-0.17:197:28Waxing Gibbous19Thu
20Fri11:187.25:011.75:30-0.17:187:29Full Moon20Fri
21Sat12:106.812:117.25:490.96:080.17:167:30Full Moon21Sat
22Sun12:427.41:037.16:360.16:460.57:147:31Full Moon22Sun
23Mon1:167.81:566.97:24-0.57:241.07:137:32Full Moon23Mon
24Tue1:538.22:516.58:13-0.98:051.67:117:33Waning Gibbous24Tue
25Wed2:328.33:496.09:04-1.08:482.27:097:34Waning Gibbous25Wed
26Thu3:168.24:535.610:00-0.99:362.77:087:35Waning Gibbous26Thu
27Fri4:067.86:055.211:01-0.610:353.27:067:36Third Quarter27Fri
28Sat5:057.47:255.112:08-0.37:047:37Third Quarter28Sat
29Sun6:156.98:425.21:190.07:037:38Third Quarter29Sun
30Mon7:326.69:445.51:183.32:270.17:017:40Third Quarter30Mon
31Tue8:476.410:305.92:393.03:250.27:007:41Waning Crescent31Tue
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 11:44 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 spring phase. Tonight's moon is 8% 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 Waxing Crescent (8% 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