Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Monday, June 29, 2026
The tide is currently falling in Upper Guadalupe Slough, CA.
Next low tide : in 3h 30m at 8:20 am (-0.7 ft)
Next high tide : 2:51 pm (7.5 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 5:50 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Sep 2052

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun8:286.67:198.82:221.52:123.46:397:36First Quarter1Sun
2Mon9:446.98:198.83:271.33:253.46:407:34First Quarter2Mon
3Tue10:387.29:169.14:241.04:253.36:417:33Waxing Gibbous3Tue
4Wed11:187.610:099.35:120.85:143.16:417:31Waxing Gibbous4Wed
5Thu11:527.910:579.65:530.55:562.86:427:30Waxing Gibbous5Thu
6Fri12:238.36:300.36:352.46:437:28Waxing Gibbous6Fri
7Sat12:538.77:040.27:132.06:447:27Full Moon7Sat
8Sun12:289.91:249.17:390.27:511.66:457:25Full Moon8Sun
9Mon1:139.81:569.48:140.48:331.26:457:24Full Moon9Mon
10Tue2:019.62:309.88:510.69:170.86:467:22Waning Gibbous10Tue
11Wed2:519.23:0710.19:301.110:050.66:477:20Waning Gibbous11Wed
12Thu3:468.73:4710.210:121.610:590.56:487:19Waning Gibbous12Thu
13Fri4:478.24:3310.210:592.111:590.46:497:17Waning Gibbous13Fri
14Sat5:587.75:2710.111:552.66:507:16Third Quarter14Sat
15Sun7:187.56:299.91:080.41:063.06:507:14Third Quarter15Sun
16Mon8:397.67:399.72:230.42:283.16:517:13Third Quarter16Mon
17Tue9:478.08:509.73:350.33:462.96:527:11Waning Crescent17Tue
18Wed10:428.59:569.84:370.14:512.56:537:10Waning Crescent18Wed
19Thu11:278.910:559.95:300.15:472.16:547:08Waning Crescent19Thu
20Fri12:079.36:160.16:351.66:557:07Waning Crescent20Fri
21Sat12:449.56:580.37:201.36:557:05New Moon21Sat
22Sun12:389.61:189.67:360.68:021.06:567:04New Moon22Sun
23Mon1:259.31:499.68:131.08:420.86:577:02New Moon23Mon
24Tue2:118.92:209.68:481.49:210.76:587:00New Moon24Tue
25Wed2:568.52:509.49:241.810:000.76:596:59Waxing Crescent25Wed
26Thu3:428.13:219.210:002.310:410.87:006:57Waxing Crescent26Thu
27Fri4:327.63:559.010:392.811:260.97:006:56Waxing Crescent27Fri
28Sat5:287.24:368.711:253.17:016:54Waxing Crescent28Sat
29Sun6:347.05:258.412:181.012:243.57:026:53First Quarter29Sun
30Mon7:486.96:248.21:181.11:423.67:036:51First Quarter30Mon
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 11:35 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 100% 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 (100% 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