Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Wednesday, June 24, 2026
The tide is currently falling in Eureka, CA.
Next low tide : in 1h 25m at 3:10 am (0.7 ft)
Next high tide : 9:41 am (4.4 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 - Apr 2017

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:457.75:055.810:17-0.510:082.36:597:41Waxing Crescent1Sat
2Sun4:367.46:165.511:18-0.411:102.76:577:42First Quarter2Sun
3Mon5:377.17:325.412:25-0.26:557:43First Quarter3Mon
4Tue6:476.88:465.612:263.01:340.06:547:44First Quarter4Tue
5Wed8:016.69:485.91:472.92:400.06:527:45Waxing Gibbous5Wed
6Thu9:126.510:386.23:012.53:380.06:507:46Waxing Gibbous6Thu
7Fri10:166.511:196.54:031.94:280.16:497:48Waxing Gibbous7Fri
8Sat11:126.511:556.74:551.45:120.36:477:49Waxing Gibbous8Sat
9Sun12:016.55:400.95:510.56:467:50Full Moon9Sun
10Mon12:286.912:476.46:210.56:270.86:447:51Full Moon10Mon
11Tue12:587.01:296.37:000.27:021.26:427:52Full Moon11Tue
12Wed1:287.02:106.17:370.07:351.66:417:53Full Moon12Wed
13Thu1:577.02:525.88:150.08:082.06:397:54Waning Gibbous13Thu
14Fri2:276.83:355.68:530.08:422.46:387:55Waning Gibbous14Fri
15Sat2:586.74:225.39:330.19:182.86:367:56Waning Gibbous15Sat
16Sun3:336.45:155.110:170.310:003.16:357:57Waning Gibbous16Sun
17Mon4:136.26:144.911:070.510:543.46:337:58Third Quarter17Mon
18Tue5:045.97:184.912:030.76:327:59Third Quarter18Tue
19Wed6:085.78:195.112:053.41:030.76:308:00Third Quarter19Wed
20Thu7:205.69:115.41:223.32:030.76:298:01Third Quarter20Thu
21Fri8:305.79:555.82:322.82:570.66:278:02Waning Crescent21Fri
22Sat9:355.910:346.33:292.23:450.56:268:03Waning Crescent22Sat
23Sun10:346.111:116.84:201.44:300.46:248:04Waning Crescent23Sun
24Mon11:296.411:487.35:070.65:140.56:238:05Waning Crescent24Mon
25Tue12:236.55:53-0.25:560.76:228:06New Moon25Tue
26Wed12:257.71:166.66:39-0.96:391.06:208:08New Moon26Wed
27Thu1:048.02:096.57:26-1.47:231.46:198:09New Moon27Thu
28Fri1:458.13:046.48:15-1.68:101.86:188:10Waxing Crescent28Fri
29Sat2:308.04:016.19:06-1.69:002.26:168:11Waxing Crescent29Sat
30Sun3:197.75:035.910:00-1.49:582.56:158:12Waxing Crescent30Sun
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 6:25 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