Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Friday, June 19, 2026
The tide is currently falling in Upper Guadalupe Slough, CA.
Next low tide : in 5h 28m at 11:49 am (-0.9 ft)
Next high tide : 6:09 pm (8.7 ft)
Sunset today : 8:31 pm
Sunrise tomorrow : 5:47 am
Moon phase : Waxing Crescent (28% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - May 2012

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue9:147.210:108.74:231.94:120.76:117:58Waxing Gibbous1Tue
2Wed10:257.410:479.45:131.05:010.96:107:59Waxing Gibbous2Wed
3Thu11:307.711:2410.16:000.15:481.26:098:00Waxing Gibbous3Thu
4Fri12:318.06:47-0.76:341.66:088:00Full Moon4Fri
5Sat12:0410.71:308.17:34-1.37:211.96:078:01Full Moon5Sat
6Sun12:4511.02:268.28:22-1.78:102.36:068:02Full Moon6Sun
7Mon1:3011.23:228.29:11-1.99:022.56:058:03Waning Gibbous7Mon
8Tue2:1711.04:198.110:02-1.99:582.86:048:04Waning Gibbous8Tue
9Wed3:0810.55:168.110:55-1.611:012.96:038:05Waning Gibbous9Wed
10Thu4:039.86:158.111:50-1.16:028:06Waning Gibbous10Thu
11Fri5:038.97:148.212:162.912:48-0.66:018:07Third Quarter11Fri
12Sat6:118.08:108.41:372.71:48-0.16:008:08Third Quarter12Sat
13Sun7:287.28:598.62:562.32:470.45:598:08Third Quarter13Sun
14Mon8:486.89:438.94:041.83:420.95:588:09Third Quarter14Mon
15Tue10:036.710:209.25:011.24:321.35:588:10Waning Crescent15Tue
16Wed11:096.710:549.35:490.75:171.75:578:11Waning Crescent16Wed
17Thu12:066.96:300.25:582.15:568:12Waning Crescent17Thu
18Fri12:567.17:07-0.16:372.55:558:13Waning Crescent18Fri
19Sat1:417.27:41-0.47:152.85:558:13New Moon19Sat
20Sun12:239.62:237.38:14-0.57:513.05:548:14New Moon20Sun
21Mon12:549.63:037.38:46-0.78:273.15:538:15New Moon21Mon
22Tue1:279.63:437.39:19-0.79:053.25:538:16New Moon22Tue
23Wed2:029.44:227.39:53-0.79:453.35:528:17Waxing Crescent23Wed
24Thu2:409.15:037.310:30-0.710:313.35:518:17Waxing Crescent24Thu
25Fri3:218.85:457.411:10-0.511:253.35:518:18Waxing Crescent25Fri
26Sat4:078.36:297.611:53-0.35:508:19Waxing Crescent26Sat
27Sun5:037.77:128.012:313.112:410.05:508:20First Quarter27Sun
28Mon6:107.17:558.41:442.81:330.45:498:20First Quarter28Mon
29Tue7:316.78:389.02:542.22:270.95:498:21First Quarter29Tue
30Wed8:576.59:209.73:561.43:231.35:498:22Waxing Gibbous30Wed
31Thu10:186.710:0210.34:520.54:181.75:488:22Waxing Gibbous31Thu
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 2:59 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 transitional phase. Tonight's moon is 28% 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 Waxing Crescent (28% 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