Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Sunday, July 5, 2026
The tide is currently rising in Eureka, CA.
Next low tide : 10:08 am (0.2 ft)
Next high tide : in 6m at 3:39 am (6.1 ft)
Sunset today : 8:51 pm
Sunrise tomorrow : 5:51 am
Moon phase : Waning Gibbous (71% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - May 2050

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:055.09:496.03:082.13:011.36:148:13Waxing Gibbous1Sun
2Mon10:065.110:236.43:571.53:441.56:128:14Waxing Gibbous2Mon
3Tue11:005.210:566.74:390.94:251.76:118:15Waxing Gibbous3Tue
4Wed11:485.411:297.05:190.35:031.96:108:16Waxing Gibbous4Wed
5Thu12:345.55:56-0.25:392.16:098:17Full Moon5Thu
6Fri12:017.21:185.66:33-0.66:162.26:088:18Full Moon6Fri
7Sat12:357.42:025.77:12-1.06:542.46:068:19Full Moon7Sat
8Sun1:097.52:485.77:51-1.27:342.66:058:20Waning Gibbous8Sun
9Mon1:477.53:355.68:33-1.28:172.76:048:21Waning Gibbous9Mon
10Tue2:297.44:255.69:19-1.29:072.86:038:22Waning Gibbous10Tue
11Wed3:167.15:185.610:07-1.010:072.86:028:23Waning Gibbous11Wed
12Thu4:136.76:125.710:59-0.711:172.76:018:24Third Quarter12Thu
13Fri5:196.27:076.011:55-0.36:008:25Third Quarter13Fri
14Sat6:355.88:006.412:342.412:530.15:598:26Third Quarter14Sat
15Sun7:555.58:496.81:501.71:520.55:588:27Waning Crescent15Sun
16Mon9:125.49:367.32:580.92:480.95:578:28Waning Crescent16Mon
17Tue10:245.510:217.73:570.13:421.35:568:29Waning Crescent17Tue
18Wed11:285.611:057.94:50-0.64:331.65:568:30Waning Crescent18Wed
19Thu12:265.85:39-1.25:221.95:558:31New Moon19Thu
20Fri1:185.96:25-1.56:092.15:548:32New Moon20Fri
21Sat12:298.02:075.97:09-1.66:552.45:538:33New Moon21Sat
22Sun1:107.82:535.97:52-1.57:412.65:528:34Waxing Crescent22Sun
23Mon1:527.53:395.88:34-1.38:282.75:528:34Waxing Crescent23Mon
24Tue2:347.14:245.79:17-0.99:172.95:518:35Waxing Crescent24Tue
25Wed3:176.55:105.69:59-0.510:113.05:508:36Waxing Crescent25Wed
26Thu4:056.05:565.610:430.011:122.95:508:37First Quarter26Thu
27Fri4:595.56:425.711:280.55:498:38First Quarter27Fri
28Sat6:015.07:265.812:192.812:161.05:498:39First Quarter28Sat
29Sun7:104.68:096.11:282.41:051.45:488:39First Quarter29Sun
30Mon8:234.58:506.42:301.91:551.85:488:40Waxing Gibbous30Mon
31Tue9:334.59:296.73:231.32:442.15:478:41Waxing Gibbous31Tue
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 6:53 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 71% 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 Waning Gibbous (71% 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