37.4350’ N, 122.0070’ W

Upper Guadalupe Slough, CA

61°
H 71°
L 57°
NW
1mph
High tide
8:31 am

Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Friday, September 4, 2026
The tide is currently rising in Upper Guadalupe Slough, CA.
Next low tide : 1:10 pm (3.8 ft)
Next high tide : in 2h 52m at 8:31 am (6.7 ft)
Sunset today : 7:32 pm
Sunrise tomorrow : 6:41 am
Moon phase : Third Quarter (45% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Feb 1896

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat2:259.11:4310.28:342.09:03-0.77:115:32Waning Gibbous1Sat
2Sun3:009.52:399.29:301.59:420.17:105:33Waning Gibbous2Sun
3Mon3:379.93:428.110:311.210:231.07:095:34Waning Gibbous3Mon
4Tue4:1710.14:587.011:390.911:081.97:085:35Third Quarter4Tue
5Wed5:0210.36:356.312:530.67:085:36Third Quarter5Wed
6Thu5:5510.28:256.412:042.82:110.37:075:37Third Quarter6Thu
7Fri6:5510.29:517.01:183.43:230.07:065:38Third Quarter7Fri
8Sat7:5910.110:497.52:443.74:25-0.37:055:39Waning Crescent8Sat
9Sun9:0010.111:347.93:593.75:17-0.57:045:40Waning Crescent9Sun
10Mon9:5510.24:593.56:01-0.67:025:42Waning Crescent10Mon
11Tue12:128.110:44 AM10.15:483.26:38-0.77:015:43New Moon11Tue
12Wed12:458.211:27 AM9.96:312.97:11-0.67:005:44New Moon12Wed
13Thu1:148.312:079.77:102.67:41-0.46:595:45New Moon13Thu
14Fri1:398.312:459.27:472.48:09-0.16:585:46New Moon14Fri
15Sat2:028.41:238.78:232.18:350.46:575:47Waxing Crescent15Sat
16Sun2:248.62:028.19:001.99:020.96:565:48Waxing Crescent16Sun
17Mon2:468.72:457.49:391.79:281.56:555:49Waxing Crescent17Mon
18Tue3:118.93:346.710:221.69:562.16:535:50Waxing Crescent18Tue
19Wed3:398.94:396.111:111.410:272.76:525:51Waxing Crescent19Wed
20Thu4:149.06:145.712:121.36:515:52First Quarter20Thu
21Fri4:599.08:225.81:231.06:505:53First Quarter21Fri
22Sat5:579.09:466.412:113.82:360.66:485:54First Quarter22Sat
23Sun7:039.210:296.91:504.03:390.16:475:55Waxing Gibbous23Sun
24Mon8:109.611:027.33:123.94:32-0.46:465:56Waxing Gibbous24Mon
25Tue9:1210.111:337.74:133.55:17-0.86:445:57Waxing Gibbous25Tue
26Wed10:0810.55:043.05:58-1.16:435:58Waxing Gibbous26Wed
27Thu12:038.211:02 AM10.75:532.46:38-1.16:425:59Full Moon27Thu
28Fri12:338.711:55 AM10.66:411.77:16-0.96:406:00Full Moon28Fri
29Sat1:059.312:4910.17:301.07:54-0.46:396:01Full Moon29Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9414549)

Common Questions About Upper Guadalupe Slough, CA Tides

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Is this week a spring tide or neap tide in Upper Guadalupe Slough, CA?

Upper Guadalupe Slough, CA is currently in a neap phase. Tonight's moon is 45% 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 Upper Guadalupe Slough, 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 Upper Guadalupe Slough, CA?

Tide predictions for Upper Guadalupe Slough, 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 Upper Guadalupe Slough, CA?

Tide data for Upper Guadalupe Slough, CA is sourced from NOAA Station #9414549. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9414549.

What is the moon phase in Upper Guadalupe Slough, CA tonight?

Tonight the moon over Upper Guadalupe Slough, CA is Third Quarter (45% illuminated). This places Upper Guadalupe Slough, 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