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 (tomorrow) : 2:29 am (1.1 ft)
Next high tide : in 4h 37m at 6:50 pm (6.4 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 - Apr 1937

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu2:586.44:424.710:070.69:333.25:596:40Waning Gibbous1Thu
2Fri3:406.15:454.511:000.810:253.45:586:41Third Quarter2Fri
3Sat4:335.96:534.511:590.911:393.55:566:43Third Quarter3Sat
4Sun5:395.77:564.71:010.95:546:44Third Quarter4Sun
5Mon6:525.78:465.01:033.42:000.85:536:45Third Quarter5Mon
6Tue8:025.79:275.52:152.92:520.75:516:46Waning Crescent6Tue
7Wed9:065.910:046.03:152.23:380.65:506:47Waning Crescent7Wed
8Thu10:056.110:396.54:071.44:210.65:486:48Waning Crescent8Thu
9Fri11:016.311:157.14:550.65:020.85:466:49New Moon9Fri
10Sat11:546.411:527.55:41-0.25:441.05:456:50New Moon10Sat
11Sun12:476.36:28-0.96:251.35:436:51New Moon11Sun
12Mon12:317.81:416.27:16-1.37:091.75:426:52Waxing Crescent12Mon
13Tue1:127.92:366.08:05-1.47:542.05:406:53Waxing Crescent13Tue
14Wed1:587.83:345.78:57-1.38:452.45:386:54Waxing Crescent14Wed
15Thu2:487.54:375.49:53-1.09:432.75:376:55Waxing Crescent15Thu
16Fri3:447.15:435.310:52-0.610:522.95:356:56First Quarter16Fri
17Sat4:496.56:515.411:56-0.25:346:57First Quarter17Sat
18Sun6:026.07:535.512:122.91:000.15:326:58First Quarter18Sun
19Mon7:195.78:465.81:332.52:010.55:316:59Waxing Gibbous19Mon
20Tue8:325.59:306.12:442.02:560.75:297:00Waxing Gibbous20Tue
21Wed9:375.510:086.43:421.43:431.05:287:01Waxing Gibbous21Wed
22Thu10:345.510:416.64:300.84:251.35:267:02Waxing Gibbous22Thu
23Fri11:245.511:116.75:120.45:031.65:257:04Full Moon23Fri
24Sat12:095.55:500.05:381.95:247:05Full Moon24Sat
25Sun12:505.56:27-0.36:132.25:227:06Full Moon25Sun
26Mon12:116.81:305.47:02-0.46:462.55:217:07Full Moon26Mon
27Tue12:416.82:115.37:38-0.47:202.75:197:08Waning Gibbous27Tue
28Wed1:126.72:525.18:15-0.47:542.95:187:09Waning Gibbous28Wed
29Thu1:456.53:375.08:54-0.28:313.15:177:10Waning Gibbous29Thu
30Fri2:216.34:264.99:36-0.19:153.35:157:11Waning Gibbous30Fri
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 10:39 pm — 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