37.4350’ N, 122.0070’ W

Upper Guadalupe Slough, CA

51°
H 68°
L 52°
SSE
1mph
Low tide
8:07 am

Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Sunday, October 11, 2026
The tide is currently falling in Upper Guadalupe Slough, CA.
Next low tide : in 3h 43m at 8:07 am (2.0 ft)
Next high tide : 1:32 pm (10.1 ft)
Sunset today : 6:36 pm
Sunrise tomorrow : 7:12 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Jan 1824

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu1:398.011:56 AM10.27:023.57:51-0.77:295:07New Moon1Thu
2Fri2:118.012:329.97:413.48:23-0.67:305:08New Moon2Fri
3Sat2:418.01:089.58:193.38:53-0.47:305:09Waxing Crescent3Sat
4Sun3:108.01:469.08:593.29:24-0.17:305:10Waxing Crescent4Sun
5Mon3:388.12:258.39:433.19:550.37:305:10Waxing Crescent5Mon
6Tue4:088.33:107.610:332.910:280.87:305:11Waxing Crescent6Tue
7Wed4:408.54:056.811:312.611:051.47:305:12First Quarter7Wed
8Thu5:158.85:206.112:372.27:305:13First Quarter8Thu
9Fri5:559.26:595.71:461.77:305:14First Quarter9Fri
10Sat6:399.58:445.912:392.62:501.07:305:15First Quarter10Sat
11Sun7:2910.010:046.51:433.13:460.37:295:16Waxing Gibbous11Sun
12Mon8:2110.511:027.12:523.54:37-0.47:295:17Waxing Gibbous12Mon
13Tue9:1511.011:487.73:563.55:25-1.07:295:18Waxing Gibbous13Tue
14Wed10:0811.54:543.46:12-1.57:295:19Full Moon14Wed
15Thu12:318.111:01 AM11.85:493.26:57-1.87:295:20Full Moon15Thu
16Fri1:108.511:53 AM11.76:422.97:41-1.87:285:21Full Moon16Fri
17Sat1:508.912:4611.47:362.58:24-1.57:285:22Full Moon17Sat
18Sun2:299.21:3910.78:322.29:06-1.17:275:23Waning Gibbous18Sun
19Mon3:089.62:359.69:311.99:48-0.47:275:24Waning Gibbous19Mon
20Tue3:499.83:368.410:341.610:320.57:275:25Waning Gibbous20Tue
21Wed4:3110.04:477.311:421.311:181.47:265:26Third Quarter21Wed
22Thu5:1710.16:146.512:561.17:265:27Third Quarter22Thu
23Fri6:0710.17:576.312:122.32:110.87:255:28Third Quarter23Fri
24Sat7:0110.09:296.61:193.03:200.47:245:29Third Quarter24Sat
25Sun7:5710.010:357.22:333.44:180.17:245:31Waning Crescent25Sun
26Mon8:5110.011:247.63:433.65:08-0.27:235:32Waning Crescent26Mon
27Tue9:4010.04:413.55:50-0.37:235:33Waning Crescent27Tue
28Wed12:037.810:25 AM10.05:293.46:26-0.47:225:34Waning Crescent28Wed
29Thu12:377.911:05 AM10.06:113.26:58-0.47:215:35New Moon29Thu
30Fri1:068.011:43 AM9.86:493.07:28-0.47:205:36New Moon30Fri
31Sat1:328.112:209.67:242.87:55-0.37:205:37New Moon31Sat
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 spring phase. Tonight's moon is 1% 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 maximum.

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 New Moon (1% illuminated). This places Upper Guadalupe Slough, CA in a spring tide cycle, so tidal ranges are near their weekly maximum 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