Tides Today & Tomorrow in Arcata Wharf, CA

TIDE TIMES for Friday, August 21, 2026
The tide is currently rising in Arcata Wharf, CA.
Next low tide : 1:34 pm (4.0 ft)
Next high tide : in 3h 06m at 9:39 am (4.4 ft)
Sunset today : 8:06 pm
Sunrise tomorrow : 6:32 am
Moon phase : First Quarter (66% illuminated)
Tide Station Location : Station #9418851
Common Questions About Tides

Arcata Wharf, CA Tides - Dec 1935

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun4:495.93:306.59:573.510:36-0.17:214:49First Quarter1Sun
2Mon5:366.24:415.911:123.211:270.57:224:49First Quarter2Mon
3Tue6:236.66:035.412:312.67:234:49First Quarter3Tue
4Wed7:097.07:295.112:201.11:441.87:244:49First Quarter4Wed
5Thu7:557.58:535.11:151.72:490.87:254:48Waxing Gibbous5Thu
6Fri8:407.910:085.32:122.33:460.07:264:48Waxing Gibbous6Fri
7Sat9:268.311:145.53:082.74:37-0.77:264:48Waxing Gibbous7Sat
8Sun10:118.54:023.15:25-1.27:274:48Full Moon8Sun
9Mon12:105.810:56 AM8.54:553.36:11-1.47:284:48Full Moon9Mon
10Tue1:005.911:41 AM8.45:453.46:55-1.47:294:48Full Moon10Tue
11Wed1:466.012:258.16:343.47:38-1.27:304:48Full Moon11Wed
12Thu2:306.01:097.77:223.58:19-0.97:314:48Waning Gibbous12Thu
13Fri3:136.01:537.28:123.59:00-0.57:324:49Waning Gibbous13Fri
14Sat3:556.02:386.69:043.59:400.17:324:49Waning Gibbous14Sat
15Sun4:366.03:276.010:013.410:190.77:334:49Waning Gibbous15Sun
16Mon5:166.14:235.411:053.310:591.37:344:49Third Quarter16Mon
17Tue5:566.25:294.812:153.07:344:50Third Quarter17Tue
18Wed6:366.46:474.51:232.57:354:50Third Quarter18Wed
19Thu7:156.68:114.412:262.52:241.97:364:50Third Quarter19Thu
20Fri7:566.99:304.51:163.03:161.37:364:51Waning Crescent20Fri
21Sat8:367.210:364.82:093.44:010.77:374:51Waning Crescent21Sat
22Sun9:177.411:285.13:033.74:430.17:374:52Waning Crescent22Sun
23Mon9:597.73:533.85:22-0.47:384:52Waning Crescent23Mon
24Tue12:125.410:40 AM7.94:413.86:02-0.87:384:53New Moon24Tue
25Wed12:525.611:22 AM8.15:273.76:41-1.17:394:53New Moon25Wed
26Thu1:315.812:058.16:133.67:20-1.27:394:54New Moon26Thu
27Fri2:106.012:508.07:003.48:00-1.27:394:55Waxing Crescent27Fri
28Sat2:496.21:377.77:513.28:40-0.97:404:55Waxing Crescent28Sat
29Sun3:296.42:297.28:473.09:22-0.47:404:56Waxing Crescent29Sun
30Mon4:106.73:276.59:502.710:040.27:404:57Waxing Crescent30Mon
31Tue4:527.04:355.710:582.310:481.07:404:57First Quarter31Tue
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 11:36 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 66% 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 First Quarter (66% 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