Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently rising in Eureka, CA.
Next low tide : 7:19 pm (2.5 ft)
Next high tide : in 27m at 2:34 pm (6.3 ft)
Sunset today : 8:47 pm
Sunrise tomorrow : 5:58 am
Moon phase : New Moon (3% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - May 1985

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed9:596.110:466.93:501.54:000.26:148:12Waxing Gibbous1Wed
2Thu11:046.211:227.54:440.54:450.56:138:13Waxing Gibbous2Thu
3Fri12:046.35:34-0.55:290.96:118:15Full Moon3Fri
4Sat1:036.36:23-1.36:131.46:108:16Full Moon4Sat
5Sun12:378.32:006.27:11-1.96:571.96:098:17Full Moon5Sun
6Mon1:178.42:576.08:00-2.17:432.46:088:18Waning Gibbous6Mon
7Tue2:008.33:565.88:50-2.08:322.86:078:19Waning Gibbous7Tue
8Wed2:467.94:575.69:42-1.69:273.26:068:20Waning Gibbous8Wed
9Thu3:377.36:025.510:38-1.110:323.46:048:21Waning Gibbous9Thu
10Fri4:366.77:085.411:37-0.611:493.46:038:22Third Quarter10Fri
11Sat5:426.08:085.512:38-0.16:028:23Third Quarter11Sat
12Sun6:565.58:585.71:123.21:370.36:018:24Third Quarter12Sun
13Mon8:115.29:396.02:282.72:300.66:008:25Waning Crescent13Mon
14Tue9:215.110:126.33:282.03:171.05:598:26Waning Crescent14Tue
15Wed10:235.010:416.54:171.43:581.45:588:27Waning Crescent15Wed
16Thu11:185.111:086.84:580.74:351.75:578:28Waning Crescent16Thu
17Fri12:075.25:350.25:102.15:568:29Waning Crescent17Fri
18Sat12:535.36:10-0.35:442.55:568:30New Moon18Sat
19Sun12:037.11:365.36:45-0.66:172.85:558:30New Moon19Sun
20Mon12:317.22:195.37:20-0.86:513.15:548:31New Moon20Mon
21Tue1:017.23:035.37:56-0.97:253.35:538:32New Moon21Tue
22Wed1:327.23:495.28:35-1.08:023.55:528:33Waxing Crescent22Wed
23Thu2:077.14:385.19:17-0.98:443.65:528:34Waxing Crescent23Thu
24Fri2:476.95:305.110:02-0.89:363.75:518:35Waxing Crescent24Fri
25Sat3:356.66:235.210:51-0.610:443.65:508:36First Quarter25Sat
26Sun4:356.27:125.411:43-0.45:508:37First Quarter26Sun
27Mon5:495.87:585.812:043.312:37-0.15:498:38First Quarter27Mon
28Tue7:115.58:406.41:242.71:320.35:498:38First Quarter28Tue
29Wed8:325.39:207.02:341.82:240.75:488:39Waxing Gibbous29Wed
30Thu9:505.310:007.63:350.73:161.25:478:40Waxing Gibbous30Thu
31Fri11:005.510:418.14:30-0.34:061.65:478:41Waxing Gibbous31Fri
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 4:56 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 spring phase. Tonight's moon is 3% 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 near their weekly maximum.

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 New Moon (3% illuminated). This places Eureka, CA in a spring tide cycle, so tidal ranges are near their weekly maximum 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