Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Sunday, June 28, 2026
The tide is currently falling in Upper Guadalupe Slough, CA.
Next low tide : in 4h 15m at 7:46 am (-0.6 ft)
Next high tide : 2:16 pm (7.5 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 5:49 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Jan 1998

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu3:078.61:5810.28:523.09:34-1.07:225:00Waxing Crescent1Thu
2Fri3:518.82:509.59:492.810:20-0.67:225:01Waxing Crescent2Fri
3Sat4:369.03:508.710:552.611:10-0.17:225:02Waxing Crescent3Sat
4Sun5:249.35:027.712:102.37:225:03First Quarter4Sun
5Mon6:149.66:277.112:040.61:281.87:225:04First Quarter5Mon
6Tue7:0610.07:586.81:031.32:421.27:225:05First Quarter6Tue
7Wed7:5810.49:227.12:061.83:460.57:225:06Waxing Gibbous7Wed
8Thu8:4810.710:327.53:092.34:41-0.17:225:06Waxing Gibbous8Thu
9Fri9:3711.011:297.94:092.65:30-0.67:225:07Waxing Gibbous9Fri
10Sat10:2311.15:042.86:15-0.97:225:08Waxing Gibbous10Sat
11Sun12:198.311:07 AM11.05:562.96:56-1.07:225:09Full Moon11Sun
12Mon1:048.511:50 AM10.86:442.97:35-0.97:225:10Full Moon12Mon
13Tue1:468.612:3110.47:302.98:12-0.87:215:11Full Moon13Tue
14Wed2:258.61:119.98:152.98:48-0.57:215:12Waning Gibbous14Wed
15Thu3:018.51:509.39:002.99:24-0.27:215:13Waning Gibbous15Thu
16Fri3:368.52:318.69:462.89:590.27:205:14Waning Gibbous16Fri
17Sat4:118.43:157.910:372.810:360.77:205:15Waning Gibbous17Sat
18Sun4:478.44:067.111:352.711:161.37:205:16Third Quarter18Sun
19Mon5:258.55:126.412:402.47:195:18Third Quarter19Mon
20Tue6:088.76:375.912:021.81:482.17:195:19Third Quarter20Tue
21Wed6:538.98:135.912:562.42:501.67:185:20Third Quarter21Wed
22Thu7:409.29:336.31:572.83:441.17:185:21Third Quarter22Thu
23Fri8:279.610:326.82:593.04:290.57:175:22Waning Crescent23Fri
24Sat9:1310.011:187.33:553.25:110.07:165:23Waning Crescent24Sat
25Sun9:5810.411:597.84:453.15:50-0.57:165:24Waning Crescent25Sun
26Mon10:4310.75:313.06:29-0.97:155:25New Moon26Mon
27Tue12:388.211:29 AM11.06:162.97:09-1.27:145:26New Moon27Tue
28Wed1:168.512:1511.07:012.67:49-1.37:145:27New Moon28Wed
29Thu1:538.81:0310.87:492.48:30-1.17:135:28New Moon29Thu
30Fri2:329.11:5310.38:402.19:12-0.87:125:30Waxing Crescent30Fri
31Sat3:129.42:479.59:351.99:56-0.27:115:31Waxing Crescent31Sat
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 11:01 am — 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 99% 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 Full Moon (99% 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