40.8067’ N, 124.1670’ W

Eureka, CA

58°
H 61°
L 50°
NNW
5mph
High tide
1:14 pm

Tides Today & Tomorrow in Eureka, CA

TIDE TIMES for Friday, September 11, 2026
The tide is currently rising in Eureka, CA.
Next low tide : 6:57 pm (0.7 ft)
Next high tide : in 1h 43m at 1:14 pm (7.2 ft)
Sunset today : 7:32 pm
Sunrise tomorrow : 6:53 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #9418801
Common Questions About Tides

Eureka, CA Tides - Aug 1882

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue12:348.11:427.26:54-1.17:101.35:207:39Waning Gibbous1Tue
2Wed1:277.62:237.57:35-0.68:051.05:217:38Waning Gibbous2Wed
3Thu2:227.03:077.68:180.19:040.85:217:37Waning Gibbous3Thu
4Fri3:236.33:537.79:030.810:080.75:227:36Third Quarter4Fri
5Sat4:315.64:447.79:521.611:170.65:237:34Third Quarter5Sat
6Sun5:485.15:397.610:482.45:247:33Third Quarter6Sun
7Mon7:144.96:397.512:290.511:54 AM2.95:257:32Third Quarter7Mon
8Tue8:385.17:417.51:380.31:063.15:267:31Waning Crescent8Tue
9Wed9:465.38:407.52:390.12:143.25:277:30Waning Crescent9Wed
10Thu10:365.69:337.53:32-0.13:143.05:287:28Waning Crescent10Thu
11Fri11:165.810:207.44:16-0.34:042.75:297:27Waning Crescent11Fri
12Sat11:496.011:027.44:55-0.34:482.55:307:26New Moon12Sat
13Sun12:196.25:30-0.25:292.25:317:24New Moon13Sun
14Mon12:486.36:020.06:082.05:327:23New Moon14Mon
15Tue12:207.01:156.56:330.36:461.85:337:22New Moon15Tue
16Wed12:586.71:446.67:030.67:251.75:347:20Waxing Crescent16Wed
17Thu1:376.32:136.77:321.18:061.65:357:19Waxing Crescent17Thu
18Fri2:195.92:436.78:011.58:501.65:367:17Waxing Crescent18Fri
19Sat3:065.53:176.78:322.09:391.55:377:16Waxing Crescent19Sat
20Sun4:015.13:566.79:062.510:371.55:387:14First Quarter20Sun
21Mon5:084.74:446.79:473.011:421.35:397:13First Quarter21Mon
22Tue6:274.65:426.810:463.35:407:11First Quarter22Tue
23Wed7:464.76:467.012:491.012:053.55:417:10First Quarter23Wed
24Thu8:525.07:517.31:510.51:223.45:427:08Waxing Gibbous24Thu
25Fri9:435.58:517.62:460.02:293.05:437:07Waxing Gibbous25Fri
26Sat10:266.09:487.93:34-0.43:282.45:447:05Waxing Gibbous26Sat
27Sun11:066.510:428.14:19-0.74:211.75:457:04Full Moon27Sun
28Mon11:447.011:358.15:02-0.85:131.15:467:02Full Moon28Mon
29Tue12:237.55:44-0.66:040.55:477:01Full Moon29Tue
30Wed12:287.81:027.86:25-0.26:550.15:486:59Waning Gibbous30Wed
31Thu1:227.41:438.07:070.37:48-0.15:496:57Waning Gibbous31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9418801)

Common Questions About Eureka, CA Tides

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Is this week a spring tide or neap tide in Eureka, CA?

Eureka, CA is currently in a spring phase. Tonight's moon is 1% 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 (1% 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