Tides Today & Tomorrow in Arcata Wharf, CA

TIDE TIMES for Thursday, August 20, 2026
The tide is currently rising in Arcata Wharf, CA.
Next low tide : 12:23 pm (3.6 ft)
Next high tide : in 38m at 7:55 am (4.4 ft)
Sunset today : 8:07 pm
Sunrise tomorrow : 6:31 am
Moon phase : First Quarter (56% illuminated)
Tide Station Location : Station #9418851
Common Questions About Tides

Arcata Wharf, CA Tides - Jan 1938

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:555.711:38 AM7.55:463.56:45-0.37:414:59New Moon1Sat
2Sun1:275.812:147.46:263.47:17-0.37:415:00New Moon2Sun
3Mon2:005.912:507.37:053.37:50-0.27:415:00Waxing Crescent3Mon
4Tue2:326.11:277.07:463.28:220.07:415:01Waxing Crescent4Tue
5Wed3:066.22:066.68:293.18:550.37:415:02Waxing Crescent5Wed
6Thu3:406.42:516.29:183.09:290.77:415:03Waxing Crescent6Thu
7Fri4:166.53:445.710:132.810:061.27:415:04First Quarter7Fri
8Sat4:556.84:515.211:162.410:481.87:405:05First Quarter8Sat
9Sun5:387.06:114.812:252.07:405:06First Quarter9Sun
10Mon6:277.37:404.71:351.37:405:07First Quarter10Mon
11Tue7:217.79:044.912:402.92:400.67:405:08Waxing Gibbous11Tue
12Wed8:188.010:155.21:503.23:39-0.17:405:09Waxing Gibbous12Wed
13Thu9:158.311:125.73:003.34:32-0.87:395:10Waxing Gibbous13Thu
14Fri10:118.64:033.15:21-1.27:395:11Full Moon14Fri
15Sat12:026.111:04 AM8.75:022.96:08-1.57:385:13Full Moon15Sat
16Sun12:476.511:57 AM8.65:582.66:53-1.57:385:14Full Moon16Sun
17Mon1:306.812:488.36:512.37:36-1.27:385:15Full Moon17Mon
18Tue2:127.01:387.87:452.18:17-0.77:375:16Waning Gibbous18Tue
19Wed2:537.22:297.18:392.08:590.07:375:17Waning Gibbous19Wed
20Thu3:357.23:236.49:351.99:400.77:365:18Waning Gibbous20Thu
21Fri4:177.24:215.710:351.910:221.57:355:19Third Quarter21Fri
22Sat5:017.15:275.011:391.811:072.37:355:21Third Quarter22Sat
23Sun5:477.16:464.612:481.77:345:22Third Quarter23Sun
24Mon6:377.08:164.51:561.57:335:23Third Quarter24Mon
25Tue7:307.09:414.712:593.42:581.27:335:24Waning Crescent25Tue
26Wed8:237.010:405.02:063.73:500.87:325:25Waning Crescent26Wed
27Thu9:137.111:225.23:073.74:340.57:315:27Waning Crescent27Thu
28Fri9:597.211:555.54:013.65:120.27:305:28Waning Crescent28Fri
29Sat10:427.34:473.45:470.07:295:29New Moon29Sat
30Sun12:255.711:22 AM7.45:293.26:19-0.17:285:30New Moon30Sun
31Mon12:546.012:007.36:092.96:51-0.17:275:32New Moon31Mon
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 10:09 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 neap phase. Tonight's moon is 56% 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 minimum.

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 (56% illuminated). This places Arcata Wharf, CA in a neap tide cycle, so tidal ranges are near their weekly minimum 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