Tides Today & Tomorrow in Arcata Wharf, CA

TIDE TIMES for Thursday, August 20, 2026
The tide is currently falling in Arcata Wharf, CA.
Next low tide : in 4h 14m at 1:20 am (1.2 ft)
Next high tide : 7:55 am (4.4 ft)
Sunset today : 8:09 pm
Sunrise tomorrow : 6:30 am
Moon phase : First Quarter (47% illuminated)
Tide Station Location : Station #9418851
Common Questions About Tides

Arcata Wharf, CA Tides - Mar 1939

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed7:587.29:505.41:463.23:110.06:516:06Waxing Gibbous1Wed
2Thu9:057.410:395.92:592.84:05-0.46:496:07Waxing Gibbous2Thu
3Fri10:067.711:226.44:032.34:54-0.66:486:09Waxing Gibbous3Fri
4Sat11:027.85:001.65:39-0.66:466:10Full Moon4Sat
5Sun12:036.911:56 AM7.75:521.06:22-0.56:456:11Full Moon5Sun
6Mon12:437.312:487.56:430.67:03-0.16:436:12Full Moon6Mon
7Tue1:227.51:397.17:330.37:450.46:416:13Waning Gibbous7Tue
8Wed2:027.62:316.68:220.28:261.06:406:14Waning Gibbous8Wed
9Thu2:427.53:256.09:130.29:091.76:386:15Waning Gibbous9Thu
10Fri3:257.34:245.510:070.59:552.36:376:16Waning Gibbous10Fri
11Sat4:116.95:305.011:060.710:472.96:356:18Third Quarter11Sat
12Sun5:036.66:464.812:101.06:336:19Third Quarter12Sun
13Mon6:036.38:064.81:181.16:326:20Third Quarter13Mon
14Tue7:086.19:135.01:063.42:231.06:306:21Third Quarter14Tue
15Wed8:126.110:015.22:193.33:180.96:286:22Waning Crescent15Wed
16Thu9:106.110:365.53:193.04:030.86:276:23Waning Crescent16Thu
17Fri10:016.211:075.74:092.54:410.76:256:24Waning Crescent17Fri
18Sat10:466.311:366.04:512.15:160.76:236:25Waning Crescent18Sat
19Sun11:276.45:301.75:480.86:226:26New Moon19Sun
20Mon12:046.312:086.46:071.36:190.96:206:27New Moon20Mon
21Tue12:326.512:486.36:430.96:501.16:186:28New Moon21Tue
22Wed1:016.71:286.17:200.77:211.46:176:29New Moon22Wed
23Thu1:306.82:115.97:590.47:531.76:156:30Waxing Crescent23Thu
24Fri2:026.92:585.68:410.38:282.16:136:32Waxing Crescent24Fri
25Sat2:376.93:515.39:280.39:082.56:126:33Waxing Crescent25Sat
26Sun3:186.94:535.010:220.39:572.86:106:34First Quarter26Sun
27Mon4:096.76:034.911:230.311:023.16:086:35First Quarter27Mon
28Tue5:136.67:165.012:300.36:076:36First Quarter28Tue
29Wed6:276.58:225.312:233.11:370.26:056:37First Quarter29Wed
30Thu7:436.59:175.71:442.82:390.16:036:38Waxing Gibbous30Thu
31Fri8:546.610:046.22:562.23:340.06:026:39Waxing Gibbous31Fri
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 4:37 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 47% 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 (47% 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