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 1h 51m 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 - Mar 1938

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue12:106.111:47 AM6.95:502.06:180.36:506:07New Moon1Tue
2Wed12:396.412:286.96:301.66:490.46:496:08New Moon2Wed
3Thu1:096.71:116.77:101.27:220.76:476:09New Moon3Thu
4Fri1:397.01:556.47:520.97:551.16:466:10Waxing Crescent4Fri
5Sat2:127.22:446.08:380.78:311.66:446:11Waxing Crescent5Sat
6Sun2:487.33:395.69:280.59:102.16:436:12Waxing Crescent6Sun
7Mon3:297.34:435.210:240.59:572.66:416:13First Quarter7Mon
8Tue4:197.25:594.911:290.510:563.06:396:14First Quarter8Tue
9Wed5:207.17:204.912:390.46:386:16First Quarter9Wed
10Thu6:317.08:365.112:133.21:500.26:366:17First Quarter10Thu
11Fri7:457.09:375.51:373.12:540.06:356:18Waxing Gibbous11Fri
12Sat8:547.110:256.02:522.73:49-0.26:336:19Waxing Gibbous12Sat
13Sun9:577.111:076.43:562.14:38-0.26:316:20Waxing Gibbous13Sun
14Mon10:547.211:456.84:511.55:22-0.16:306:21Full Moon14Mon
15Tue11:457.15:411.06:020.16:286:22Full Moon15Tue
16Wed12:217.012:346.96:280.56:410.56:266:23Full Moon16Wed
17Thu12:567.21:216.67:120.37:180.96:256:24Full Moon17Thu
18Fri1:307.22:076.27:560.27:541.56:236:25Waning Gibbous18Fri
19Sat2:047.12:535.88:390.38:312.06:216:26Waning Gibbous19Sat
20Sun2:396.93:425.39:240.59:092.56:206:28Waning Gibbous20Sun
21Mon3:166.74:374.910:130.79:503.06:186:29Waning Gibbous21Mon
22Tue3:596.35:404.711:071.010:413.36:166:30Third Quarter22Tue
23Wed4:506.06:524.612:081.16:156:31Third Quarter23Wed
24Thu5:525.88:034.61:131.26:136:32Third Quarter24Thu
25Fri6:595.79:004.91:073.52:131.16:116:33Third Quarter25Fri
26Sat8:055.79:425.22:183.23:051.06:106:34Waning Crescent26Sat
27Sun9:055.910:175.53:162.83:490.86:086:35Waning Crescent27Sun
28Mon9:576.010:495.94:052.24:280.86:066:36Waning Crescent28Mon
29Tue10:466.211:206.34:481.65:040.86:056:37Waning Crescent29Tue
30Wed11:336.311:526.75:291.05:390.96:036:38New Moon30Wed
31Thu12:196.36:100.46:141.06:016:39New Moon31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9418851)

Common Questions About Arcata Wharf, CA Tides

Show All
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