Tides Today & Tomorrow in Arcata Wharf, CA

TIDE TIMES for Sunday, August 9, 2026
The tide is currently falling in Arcata Wharf, CA.
Next low tide : in 4h 45m at 4:37 am (-0.6 ft)
Next high tide : 11:35 am (5.0 ft)
Sunset today : 8:24 pm
Sunrise tomorrow : 6:20 am
Moon phase : Waning Crescent (21% illuminated)
Tide Station Location : Station #9418851
Common Questions About Tides

Arcata Wharf, CA Tides - Oct 1957

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue7:235.36:296.012:270.712:403.46:135:59First Quarter1Tue
2Wed8:275.57:395.81:320.91:563.16:145:57Waxing Gibbous2Wed
3Thu9:155.78:435.82:301.02:592.76:155:55Waxing Gibbous3Thu
4Fri9:535.99:385.93:201.13:492.26:165:54Waxing Gibbous4Fri
5Sat10:256.210:266.04:011.24:311.76:175:52Waxing Gibbous5Sat
6Sun10:546.411:106.04:381.35:091.36:185:50Waxing Gibbous6Sun
7Mon11:226.611:516.05:111.55:440.96:195:49Full Moon7Mon
8Tue11:506.85:431.76:190.56:205:47Full Moon8Tue
9Wed12:316.012:186.96:141.96:540.36:215:45Full Moon9Wed
10Thu1:115.912:467.06:462.27:300.16:225:44Full Moon10Thu
11Fri1:535.81:167.07:172.58:090.16:235:42Waning Gibbous11Fri
12Sat2:385.61:487.07:512.88:500.16:245:41Waning Gibbous12Sat
13Sun3:275.42:256.88:293.19:370.26:255:39Waning Gibbous13Sun
14Mon4:225.23:126.69:163.310:310.36:265:38Third Quarter14Mon
15Tue5:245.24:116.410:183.511:300.46:275:36Third Quarter15Tue
16Wed6:285.35:266.111:373.46:285:35Third Quarter16Wed
17Thu7:285.66:466.012:340.51:003.16:305:33Third Quarter17Thu
18Fri8:206.08:036.11:360.62:132.46:315:32Waning Crescent18Fri
19Sat9:066.69:126.22:330.63:151.56:325:30Waning Crescent19Sat
20Sun9:497.110:166.43:250.74:100.66:335:29Waning Crescent20Sun
21Mon10:307.611:146.54:140.95:01-0.26:345:27New Moon21Mon
22Tue11:118.05:001.25:49-0.86:355:26New Moon22Tue
23Wed12:096.611:52 AM8.25:451.56:37-1.26:365:24New Moon23Wed
24Thu1:036.512:338.26:301.97:24-1.36:375:23New Moon24Thu
25Fri1:556.41:158.07:162.38:11-1.16:395:22Waxing Crescent25Fri
26Sat2:486.11:597.68:032.78:59-0.76:405:20Waxing Crescent26Sat
27Sun3:435.92:467.18:553.09:50-0.36:415:19Waxing Crescent27Sun
28Mon4:415.73:386.59:523.310:430.26:425:18First Quarter28Mon
29Tue5:415.64:385.911:003.411:400.76:435:16First Quarter29Tue
30Wed6:415.65:465.512:173.46:445:15First Quarter30Wed
31Thu7:355.86:595.212:381.11:323.06:465:14First Quarter31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9418851)

Common Questions About Arcata Wharf, CA Tides

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What time does the tide turn (slack tide) in Arcata Wharf, CA today?

Slack tide in Arcata Wharf, CA is approximately 8:06 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 Arcata Wharf, CA?

Arcata Wharf, CA is currently in a transitional phase. Tonight's moon is 21% 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 Arcata Wharf, 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 Arcata Wharf, CA?

Tide predictions for Arcata Wharf, 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 Arcata Wharf, CA?

Tide data for Arcata Wharf, CA is sourced from NOAA Station #9418851. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9418851.

What is the moon phase in Arcata Wharf, CA tonight?

Tonight the moon over Arcata Wharf, CA is Waning Crescent (21% illuminated). This places Arcata Wharf, 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