Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Wednesday, July 8, 2026
The tide is currently falling in Eureka, CA.
Next low tide : in 57m at 12:11 pm (2.1 ft)
Next high tide : 7:16 pm (7.3 ft)
Sunset today : 8:50 pm
Sunrise tomorrow : 5:53 am
Moon phase : Third Quarter (39% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - Jun 1993

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue10:505.210:198.14:11-0.53:442.05:478:41Waxing Gibbous1Tue
2Wed11:535.511:058.35:03-1.24:372.35:468:42Waxing Gibbous2Wed
3Thu12:505.75:52-1.65:292.45:468:43Full Moon3Thu
4Fri1:405.86:38-1.86:192.65:458:44Full Moon4Fri
5Sat12:368.22:285.97:23-1.87:092.65:458:44Full Moon5Sat
6Sun1:217.93:135.98:06-1.67:582.75:458:45Waning Gibbous6Sun
7Mon2:057.53:575.98:49-1.38:482.85:458:45Waning Gibbous7Mon
8Tue2:506.94:405.99:31-0.89:412.85:448:46Waning Gibbous8Tue
9Wed3:376.35:235.910:12-0.310:392.85:448:47Waning Gibbous9Wed
10Thu4:285.76:055.910:540.311:422.65:448:47Third Quarter10Thu
11Fri5:265.16:476.111:370.95:448:48Third Quarter11Fri
12Sat6:324.67:286.212:492.312:211.55:448:48Third Quarter12Sat
13Sun7:464.48:106.51:541.91:092.05:448:49Third Quarter13Sun
14Mon9:024.38:516.72:521.42:002.45:448:49Waning Crescent14Mon
15Tue10:134.49:327.03:430.82:522.85:448:49Waning Crescent15Tue
16Wed11:144.710:127.34:280.23:423.05:448:50Waning Crescent16Wed
17Thu12:045.05:09-0.34:293.15:448:50Waning Crescent17Thu
18Fri12:495.35:49-0.85:153.15:448:50New Moon18Fri
19Sat1:315.56:28-1.26:003.05:448:51New Moon19Sat
20Sun12:157.92:125.77:08-1.56:452.95:458:51New Moon20Sun
21Mon12:587.92:525.97:47-1.67:332.85:458:51New Moon21Mon
22Tue1:427.73:336.18:28-1.58:242.65:458:51Waxing Crescent22Tue
23Wed2:307.44:146.39:09-1.29:202.45:458:52Waxing Crescent23Wed
24Thu3:236.94:576.69:52-0.810:232.15:468:52Waxing Crescent24Thu
25Fri4:236.35:426.910:37-0.211:311.85:468:52First Quarter25Fri
26Sat5:315.66:307.211:250.65:468:52First Quarter26Sat
27Sun6:495.17:197.512:431.312:181.35:478:52First Quarter27Sun
28Mon8:144.88:117.71:540.71:161.95:478:52Waxing Gibbous28Mon
29Tue9:384.89:048.03:000.02:182.45:488:52Waxing Gibbous29Tue
30Wed10:535.19:568.13:59-0.53:212.75:488:52Waxing Gibbous30Wed
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 3:43 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 39% 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 Third Quarter (39% 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