37.4350’ N, 122.0070’ W

Upper Guadalupe Slough, CA

60°
H -°
L 58°
ESE
1mph
High tide
5:20 am

Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Wednesday, September 2, 2026
The tide is currently rising in Upper Guadalupe Slough, CA.
Next low tide : 11:07 am (2.7 ft)
Next high tide : in 2h 17m at 5:20 am (7.1 ft)
Sunset today : 7:35 pm
Sunrise tomorrow : 6:39 am
Moon phase : Third Quarter (67% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Aug 1906

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:547.89:4611.44:47-0.54:223.05:117:16Waxing Gibbous1Wed
2Thu11:478.310:3811.55:38-0.95:202.95:127:15Waxing Gibbous2Thu
3Fri12:348.66:26-1.16:142.85:137:14Full Moon3Fri
4Sat1:178.97:11-1.17:062.75:147:13Full Moon4Sat
5Sun12:1711.21:589.07:54-1.07:572.55:147:12Full Moon5Sun
6Mon1:0510.62:389.18:35-0.78:472.45:157:11Waning Gibbous6Mon
7Tue1:539.93:169.19:16-0.29:392.35:167:10Waning Gibbous7Tue
8Wed2:419.13:549.19:560.410:342.35:177:09Waning Gibbous8Wed
9Thu3:338.24:329.010:381.011:342.25:187:08Waning Gibbous9Thu
10Fri4:327.35:129.011:221.75:197:07Third Quarter10Fri
11Sat5:456.75:569.012:402.012:132.35:207:06Third Quarter11Sat
12Sun7:156.46:439.11:471.81:132.85:207:05Third Quarter12Sun
13Mon8:446.57:339.22:511.42:183.25:217:03Third Quarter13Mon
14Tue9:536.98:239.43:461.13:193.35:227:02Waning Crescent14Tue
15Wed10:437.39:109.74:330.74:113.45:237:01Waning Crescent15Wed
16Thu11:227.69:5510.05:140.44:573.35:247:00Waning Crescent16Thu
17Fri11:577.910:3810.25:510.15:373.15:256:59Waning Crescent17Fri
18Sat12:298.16:25-0.16:152.95:256:57New Moon18Sat
19Sun1:018.46:59-0.36:532.75:266:56New Moon19Sun
20Mon12:0210.41:328.67:32-0.37:332.45:276:55New Moon20Mon
21Tue12:4510.22:058.98:07-0.28:162.25:286:53New Moon21Tue
22Wed1:309.82:399.28:430.09:031.95:296:52Waxing Crescent22Wed
23Thu2:199.33:159.59:220.59:551.65:306:51Waxing Crescent23Thu
24Fri3:148.63:569.710:031.110:551.45:316:49Waxing Crescent24Fri
25Sat4:207.84:419.910:511.75:316:48First Quarter25Sat
26Sun5:397.25:3410.012:021.111:47 AM2.45:326:46First Quarter26Sun
27Mon7:117.06:3310.21:160.812:562.95:336:45First Quarter27Mon
28Tue8:387.37:3710.42:300.42:123.15:346:44Waxing Gibbous28Tue
29Wed9:467.88:3910.63:350.03:243.15:356:42Waxing Gibbous29Wed
30Thu10:408.39:3710.84:32-0.34:262.95:366:41Waxing Gibbous30Thu
31Fri11:268.710:3210.85:22-0.55:212.65:366:39Waxing Gibbous31Fri
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 67% 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 (67% 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