Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Saturday, August 8, 2026
The tide is currently rising in Eureka, CA.
Next low tide : 2:01 pm (3.7 ft)
Next high tide : in 7h 03m at 10:09 am (4.8 ft)
Sunset today : 8:24 pm
Sunrise tomorrow : 6:20 am
Moon phase : Waning Crescent (21% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - Mar 2090

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:246.512:027.15:481.96:120.46:496:08New Moon1Wed
2Thu12:526.612:396.96:251.76:420.66:476:09New Moon2Thu
3Fri1:206.71:176.67:011.57:110.96:456:10Waxing Crescent3Fri
4Sat1:496.81:576.37:391.47:411.36:446:11Waxing Crescent4Sat
5Sun2:196.92:405.98:201.38:121.86:426:12Waxing Crescent5Sun
6Mon2:516.93:305.59:061.38:472.26:416:14Waxing Crescent6Mon
7Tue3:286.94:315.19:591.29:292.66:396:15First Quarter7Tue
8Wed4:136.95:444.911:001.110:253.06:386:16First Quarter8Wed
9Thu5:106.97:034.912:090.96:366:17First Quarter9Thu
10Fri6:186.98:165.21:160.56:346:18First Quarter10Fri
11Sat7:287.19:155.61:013.12:180.16:336:19Waxing Gibbous11Sat
12Sun9:347.411:046.13:132.74:12-0.37:317:20Waxing Gibbous12Sun
13Mon10:357.711:486.74:152.15:01-0.67:297:21Waxing Gibbous13Mon
14Tue11:327.95:111.45:47-0.77:287:22Full Moon14Tue
15Wed12:297.212:277.96:030.86:31-0.67:267:23Full Moon15Wed
16Thu1:097.61:197.86:530.27:14-0.37:247:25Full Moon16Thu
17Fri1:507.92:127.47:43-0.17:560.27:237:26Waning Gibbous17Fri
18Sat2:308.03:056.98:34-0.38:400.87:217:27Waning Gibbous18Sat
19Sun3:127.94:016.49:25-0.29:251.57:197:28Waning Gibbous19Sun
20Mon3:577.65:015.910:200.010:142.27:187:29Waning Gibbous20Mon
21Tue4:457.26:075.411:190.311:102.77:167:30Third Quarter21Tue
22Wed5:396.87:225.212:230.67:157:31Third Quarter22Wed
23Thu6:416.48:395.212:183.11:300.77:137:32Third Quarter23Thu
24Fri7:486.29:445.41:333.22:350.87:117:33Third Quarter24Fri
25Sat8:546.110:335.62:453.03:310.77:107:34Waning Crescent25Sat
26Sun9:526.211:105.83:452.74:170.77:087:35Waning Crescent26Sun
27Mon10:436.311:416.14:332.24:570.77:067:36Waning Crescent27Mon
28Tue11:286.45:141.85:320.77:057:37Waning Crescent28Tue
29Wed12:106.312:106.45:521.46:050.87:037:38New Moon29Wed
30Thu12:396.612:496.46:281.06:370.97:017:39New Moon30Thu
31Fri1:076.71:296.37:040.77:071.27:007:40New 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 12:05 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 21% 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 Waning Crescent (21% 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