37.4350’ N, 122.0070’ W

Upper Guadalupe Slough, CA

60°
H 73°
L 57°
NW
2mph
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 12m 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 1895

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri4:339.05:076.012:001.87:115:32First Quarter1Fri
2Sat5:119.26:575.71:081.47:105:33First Quarter2Sat
3Sun5:579.58:586.02:200.87:095:34First Quarter3Sun
4Mon6:549.810:156.61:103.73:260.27:085:35Waxing Gibbous4Mon
5Tue7:5610.211:047.22:343.94:24-0.57:075:36Waxing Gibbous5Tue
6Wed8:5810.711:447.73:483.95:16-1.17:065:37Waxing Gibbous6Wed
7Thu9:5711.24:493.66:03-1.57:055:39Waxing Gibbous7Thu
8Fri12:218.110:53 AM11.55:443.16:48-1.77:045:40Full Moon8Fri
9Sat12:568.511:47 AM11.56:362.67:30-1.67:035:41Full Moon9Sat
10Sun1:318.912:4011.17:292.18:10-1.37:025:42Full Moon10Sun
11Mon2:069.31:3410.38:221.68:50-0.77:015:43Waning Gibbous11Mon
12Tue2:419.72:309.39:181.29:290.17:005:44Waning Gibbous12Tue
13Wed3:189.93:318.110:160.910:091.16:595:45Waning Gibbous13Wed
14Thu3:5710.04:427.111:190.810:522.06:585:46Third Quarter14Thu
15Fri4:3910.06:136.412:290.76:575:47Third Quarter15Fri
16Sat5:279.78:046.41:440.56:555:48Third Quarter16Sat
17Sun6:249.59:356.812:583.52:570.46:545:49Third Quarter17Sun
18Mon7:289.310:347.32:263.84:010.16:535:50Waning Crescent18Mon
19Tue8:319.311:167.73:423.84:53-0.16:525:51Waning Crescent19Tue
20Wed9:269.411:517.84:403.65:37-0.26:515:52Waning Crescent20Wed
21Thu10:149.55:263.36:13-0.36:495:53Waning Crescent21Thu
22Fri12:207.910:57 AM9.56:063.06:44-0.36:485:54New Moon22Fri
23Sat12:457.911:36 AM9.46:412.77:12-0.26:475:55New Moon23Sat
24Sun1:078.112:139.27:152.37:380.06:455:56New Moon24Sun
25Mon1:288.212:508.87:472.08:030.36:445:57New Moon25Mon
26Tue1:498.51:298.48:211.88:280.76:435:58Waxing Crescent26Tue
27Wed2:118.72:107.88:571.58:541.26:415:59Waxing Crescent27Wed
28Thu2:359.02:587.29:361.29:231.86:406:00Waxing Crescent28Thu
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