Tides Today & Tomorrow in Arcata Wharf, CA

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently rising in Arcata Wharf, CA.
Next low tide (tomorrow) : 1:20 am (1.2 ft)
Next high tide : in 1h 42m at 5:59 pm (6.6 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 - Oct 1939

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun1:585.91:366.97:332.28:210.36:126:00Waning Gibbous1Sun
2Mon2:435.62:086.98:072.59:040.36:135:58Waning Gibbous2Mon
3Tue3:345.42:476.88:452.99:540.46:145:56Waning Gibbous3Tue
4Wed4:335.23:356.69:323.210:510.56:155:55Third Quarter4Wed
5Thu5:395.14:376.410:353.411:540.56:165:53Third Quarter5Thu
6Fri6:475.25:526.311:553.46:175:51Third Quarter6Fri
7Sat7:505.57:106.31:000.51:173.06:185:50Third Quarter7Sat
8Sun8:445.98:236.42:030.42:292.46:195:48Waning Crescent8Sun
9Mon9:316.59:306.62:590.43:311.66:205:47Waning Crescent9Mon
10Tue10:147.010:306.83:500.44:250.86:215:45Waning Crescent10Tue
11Wed10:547.511:276.84:370.55:160.06:225:43New Moon11Wed
12Thu11:347.85:230.86:04-0.56:235:42New Moon12Thu
13Fri12:216.812:148.06:061.26:51-0.96:255:40New Moon13Fri
14Sat1:136.612:548.06:501.67:38-0.96:265:39Waxing Crescent14Sat
15Sun2:056.41:367.87:342.18:26-0.86:275:37Waxing Crescent15Sun
16Mon2:596.12:197.48:202.59:15-0.46:285:36Waxing Crescent16Mon
17Tue3:545.83:056.99:103.010:060.06:295:34Waxing Crescent17Tue
18Wed4:545.63:576.410:073.311:020.56:305:33First Quarter18Wed
19Thu5:585.44:585.911:163.56:315:31First Quarter19Thu
20Fri7:025.46:065.512:020.912:333.46:325:30First Quarter20Fri
21Sat7:575.67:185.41:021.11:473.16:335:28First Quarter21Sat
22Sun8:435.88:245.31:581.32:472.66:345:27Waxing Gibbous22Sun
23Mon9:206.19:225.42:481.53:362.16:365:25Waxing Gibbous23Mon
24Tue9:536.410:145.63:311.64:181.56:375:24Waxing Gibbous24Tue
25Wed10:246.711:005.74:101.74:561.06:385:22Waxing Gibbous25Wed
26Thu10:556.911:445.84:461.95:320.56:395:21Full Moon26Thu
27Fri11:257.15:202.16:070.16:405:20Full Moon27Fri
28Sat12:265.911:56 AM7.35:552.36:44-0.26:415:18Full Moon28Sat
29Sun1:095.912:277.46:292.57:21-0.46:425:17Full Moon29Sun
30Mon1:535.81:017.47:052.88:02-0.56:445:16Waning Gibbous30Mon
31Tue2:395.71:387.37:453.08:45-0.56:455:15Waning Gibbous31Tue
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 9:39 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 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