Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Friday, July 10, 2026
The tide is currently falling in Upper Guadalupe Slough, CA.
Next low tide : in 29m at 3:58 pm (3.4 ft)
Next high tide : 9:31 pm (11.1 ft)
Sunset today : 8:30 pm
Sunrise tomorrow : 5:56 am
Moon phase : Waning Crescent (18% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Jan 1983

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat2:488.71:2311.48:183.29:15-1.77:225:00Waning Gibbous1Sat
2Sun3:368.82:1810.79:183.110:04-1.37:225:01Waning Gibbous2Sun
3Mon4:249.03:169.610:252.910:54-0.77:225:02Waning Gibbous3Mon
4Tue5:129.14:218.511:392.711:460.17:225:03Third Quarter4Tue
5Wed6:019.35:367.412:582.37:225:03Third Quarter5Wed
6Thu6:509.67:056.712:400.92:131.77:225:04Third Quarter6Thu
7Fri7:379.98:386.51:371.63:201.17:225:05Third Quarter7Fri
8Sat8:2210.19:596.82:362.24:170.57:225:06Waning Crescent8Sat
9Sun9:0410.211:047.23:332.85:050.17:225:07Waning Crescent9Sun
10Mon9:4310.311:567.64:263.15:46-0.37:225:08Waning Crescent10Mon
11Tue10:2110.35:153.46:24-0.57:225:09Waning Crescent11Tue
12Wed12:407.810:58 AM10.35:593.56:58-0.67:225:10New Moon12Wed
13Thu1:187.911:33 AM10.26:393.67:31-0.67:215:11New Moon13Thu
14Fri1:527.912:0910.17:163.58:03-0.67:215:12New Moon14Fri
15Sat2:247.912:449.97:523.58:35-0.67:215:13New Moon15Sat
16Sun2:547.91:209.58:293.49:07-0.47:215:14Waxing Crescent16Sun
17Mon3:247.91:589.19:083.39:39-0.27:205:15Waxing Crescent17Mon
18Tue3:558.02:388.59:533.210:140.27:205:16Waxing Crescent18Tue
19Wed4:288.23:267.710:453.010:510.67:195:17Waxing Crescent19Wed
20Thu5:048.54:267.011:472.711:331.27:195:18First Quarter20Thu
21Fri5:438.85:486.312:572.27:185:19First Quarter21Fri
22Sat6:259.27:306.112:221.92:071.67:185:20First Quarter22Sat
23Sun7:119.79:076.41:202.53:100.87:175:21First Quarter23Sun
24Mon8:0110.210:227.02:253.04:070.07:175:23Waxing Gibbous24Mon
25Tue8:5410.811:207.63:303.34:59-0.77:165:24Waxing Gibbous25Tue
26Wed9:4711.34:313.35:49-1.37:155:25Waxing Gibbous26Wed
27Thu12:098.110:40 AM11.75:273.26:37-1.77:155:26Full Moon27Thu
28Fri12:548.511:32 AM11.86:213.07:24-1.87:145:27Full Moon28Fri
29Sat1:368.812:2511.67:152.88:09-1.77:135:28Full Moon29Sat
30Sun2:179.01:1711.18:092.58:54-1.47:135:29Waning Gibbous30Sun
31Mon2:589.22:1010.39:052.29:37-0.87:125:30Waning Gibbous31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9414549)

Common Questions About Upper Guadalupe Slough, CA Tides

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What time does the tide turn (slack tide) in Upper Guadalupe Slough, CA today?

Slack tide in Upper Guadalupe Slough, CA is approximately 6:44 pm — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

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 18% 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 Waning Crescent (18% 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