Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Wednesday, June 24, 2026
The tide is currently rising in Eureka, CA.
Next low tide (tomorrow) : 4:02 am (0.2 ft)
Next high tide : in 3h 23m at 9:01 pm (7.2 ft)
Sunset today : 8:52 pm
Sunrise tomorrow : 5:46 am
Moon phase : Waxing Gibbous (77% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - Mar 2016

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue4:476.66:134.711:351.610:503.36:496:08Third Quarter1Tue
2Wed5:426.67:334.712:421.36:476:09Third Quarter2Wed
3Thu6:436.78:435.012:043.51:451.06:466:10Third Quarter3Thu
4Fri7:466.99:375.41:203.42:390.56:446:11Waning Crescent4Fri
5Sat8:457.210:215.82:253.13:280.06:426:12Waning Crescent5Sat
6Sun9:407.511:006.33:222.64:12-0.46:416:14Waning Crescent6Sun
7Mon10:317.811:386.84:132.04:54-0.66:396:15New Moon7Mon
8Tue11:227.95:011.45:34-0.66:386:16New Moon8Tue
9Wed12:157.212:127.95:500.86:15-0.46:366:17New Moon9Wed
10Thu12:537.61:037.66:390.46:560.06:346:18Waxing Crescent10Thu
11Fri1:337.81:577.27:290.17:390.56:336:19Waxing Crescent11Fri
12Sat2:157.92:546.68:23-0.18:241.26:316:20Waxing Crescent12Sat
13Sun4:007.94:566.110:200.010:141.87:307:21Waxing Crescent13Sun
14Mon4:517.66:075.611:220.111:112.47:287:22First Quarter14Mon
15Tue5:487.37:255.412:300.37:267:23First Quarter15Tue
16Wed6:537.18:465.412:212.91:420.37:257:25First Quarter16Wed
17Thu8:026.89:565.61:383.02:490.37:237:26Waxing Gibbous17Thu
18Fri9:106.810:495.92:532.93:470.27:217:27Waxing Gibbous18Fri
19Sat10:116.811:316.23:562.54:360.27:207:28Waxing Gibbous19Sat
20Sun11:036.84:482.15:180.27:187:29Waxing Gibbous20Sun
21Mon12:066.411:49 AM6.85:321.75:550.37:167:30Full Moon21Mon
22Tue12:366.512:316.76:121.36:290.57:157:31Full Moon22Tue
23Wed1:056.71:106.66:501.07:010.87:137:32Full Moon23Wed
24Thu1:336.81:496.47:260.87:321.17:117:33Full Moon24Thu
25Fri2:016.82:286.28:020.78:031.57:107:34Waning Gibbous25Fri
26Sat2:296.83:085.98:390.68:331.97:087:35Waning Gibbous26Sat
27Sun2:596.73:525.69:180.79:052.37:067:36Waning Gibbous27Sun
28Mon3:316.64:425.210:010.79:402.77:057:37Waning Gibbous28Mon
29Tue4:086.55:405.010:500.810:243.07:037:38Third Quarter29Tue
30Wed4:536.36:474.811:460.811:233.37:017:39Third Quarter30Wed
31Thu5:506.27:574.912:500.87:007:40Third 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 12:31 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 77% 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 Waxing Gibbous (77% 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