Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Friday, June 19, 2026
The tide is currently rising in Eureka, CA.
Next low tide : 10:11 am (-1.1 ft)
Next high tide : in 2h 40m at 3:32 am (7.3 ft)
Sunset today : 8:51 pm
Sunrise tomorrow : 5:44 am
Moon phase : Waxing Crescent (28% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - Dec 2026

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:136.85:405.811:512.811:490.87:214:49Third Quarter1Tue
2Wed7:007.17:045.31:082.17:224:49Third Quarter2Wed
3Thu7:447.48:275.212:421.52:131.37:234:49Waning Crescent3Thu
4Fri8:257.79:425.21:342.23:070.67:244:49Waning Crescent4Fri
5Sat9:027.910:465.42:242.83:530.07:254:49Waning Crescent5Sat
6Sun9:398.011:395.63:113.24:34-0.47:264:48Waning Crescent6Sun
7Mon10:148.03:563.55:12-0.67:274:48New Moon7Mon
8Tue12:245.810:49 AM8.04:383.85:49-0.77:284:48New Moon8Tue
9Wed1:045.811:24 AM7.95:183.96:25-0.77:294:48New Moon9Wed
10Thu1:415.911:59 AM7.85:563.97:01-0.77:304:49New Moon10Thu
11Fri2:185.812:357.66:354.07:37-0.57:304:49Waxing Crescent11Fri
12Sat2:565.81:127.37:164.08:13-0.37:314:49Waxing Crescent12Sat
13Sun3:345.81:516.98:014.08:500.07:324:49Waxing Crescent13Sun
14Mon4:125.92:346.48:543.99:270.47:334:49Waxing Crescent14Mon
15Tue4:516.13:285.99:573.710:050.87:334:49First Quarter15Tue
16Wed5:296.44:355.311:063.310:451.47:344:50First Quarter16Wed
17Thu6:066.75:574.912:172.77:354:50First Quarter17Thu
18Fri6:447.17:244.81:211.97:354:50First Quarter18Fri
19Sat7:247.68:484.912:222.62:180.97:364:51Waxing Gibbous19Sat
20Sun8:078.110:015.21:183.13:100.07:374:51Waxing Gibbous20Sun
21Mon8:538.611:035.62:173.44:00-0.97:374:52Waxing Gibbous21Mon
22Tue9:429.011:575.93:143.64:48-1.57:384:52Full Moon22Tue
23Wed10:329.34:103.65:36-1.97:384:53Full Moon23Wed
24Thu12:466.211:23 AM9.35:053.56:23-2.17:384:53Full Moon24Thu
25Fri1:336.412:159.26:003.37:10-2.07:394:54Waning Gibbous25Fri
26Sat2:196.61:088.76:573.27:56-1.67:394:55Waning Gibbous26Sat
27Sun3:046.72:038.07:563.08:42-1.07:394:55Waning Gibbous27Sun
28Mon3:506.93:027.29:012.89:27-0.27:404:56Waning Gibbous28Mon
29Tue4:357.14:066.210:112.510:120.77:404:57Third Quarter29Tue
30Wed5:217.35:205.411:252.211:001.67:404:58Third Quarter30Wed
31Thu6:077.56:454.912:391.77:404:58Third 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 6:51 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 28% 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 Crescent (28% 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