37.4350’ N, 122.0070’ W

Upper Guadalupe Slough, CA

74°
H 76°
L 56°
NNW
10mph
Low tide
2:42 pm

Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Saturday, September 5, 2026
The tide is currently falling in Upper Guadalupe Slough, CA.
Next low tide : in 2h 20m at 2:42 pm (4.0 ft)
Next high tide : 7:55 pm (10.2 ft)
Sunset today : 7:31 pm
Sunrise tomorrow : 6:42 am
Moon phase : Third Quarter (34% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Aug 1887

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon11:538.210:4110.95:48-0.55:303.05:127:16Waxing Gibbous1Mon
2Tue12:378.46:30-0.66:183.05:127:15Full Moon2Tue
3Wed1:168.57:09-0.67:032.95:137:14Full Moon3Wed
4Thu12:0810.41:528.67:46-0.57:462.85:147:13Full Moon4Thu
5Fri12:4810.02:258.68:21-0.38:282.85:157:12Full Moon5Fri
6Sat1:279.52:578.68:550.09:102.75:167:11Waning Gibbous6Sat
7Sun2:078.93:278.69:290.49:542.65:177:10Waning Gibbous7Sun
8Mon2:498.33:598.610:030.910:432.55:177:08Waning Gibbous8Mon
9Tue3:377.64:338.710:401.411:392.45:187:07Waning Gibbous9Tue
10Wed4:346.95:128.811:212.05:197:06Third Quarter10Wed
11Thu5:496.45:579.012:432.112:102.55:207:05Third Quarter11Thu
12Fri7:206.26:469.21:501.81:103.05:217:04Third Quarter12Fri
13Sat8:476.57:389.52:511.42:153.25:227:03Third Quarter13Sat
14Sun9:536.98:309.93:450.93:163.35:237:01Waning Crescent14Sun
15Mon10:437.49:2010.34:310.44:103.35:237:00Waning Crescent15Mon
16Tue11:257.910:0910.75:15-0.14:593.15:246:59Waning Crescent16Tue
17Wed12:038.35:56-0.55:452.85:256:58New Moon17Wed
18Thu12:418.76:37-0.86:322.55:266:56New Moon18Thu
19Fri1:189.07:18-0.87:202.15:276:55New Moon19Fri
20Sat12:3711.01:569.48:00-0.78:101.85:286:54New Moon20Sat
21Sun1:2910.52:359.78:42-0.39:041.55:286:52Waxing Crescent21Sun
22Mon2:249.93:1710.09:260.210:021.35:296:51Waxing Crescent22Mon
23Tue3:249.04:0110.110:120.911:071.15:306:50Waxing Crescent23Tue
24Wed4:338.14:5110.211:041.65:316:48First Quarter24Wed
25Thu5:547.55:4610.212:180.912:042.35:326:47First Quarter25Thu
26Fri7:247.36:4610.21:330.71:162.85:336:46First Quarter26Fri
27Sat8:487.57:4810.22:450.52:323.15:346:44Waxing Gibbous27Sat
28Sun9:547.98:4810.23:480.23:403.15:346:43Waxing Gibbous28Sun
29Mon10:468.39:4210.24:420.04:372.95:356:41Waxing Gibbous29Mon
30Tue11:298.610:3110.25:28-0.15:272.75:366:40Waxing Gibbous30Tue
31Wed12:068.76:08-0.16:102.55:376:38Full Moon31Wed
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 transitional phase. Tonight's moon is 34% 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 shifting between spring and neap.

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 (34% illuminated). This places Upper Guadalupe Slough, CA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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