Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently falling in Upper Guadalupe Slough, CA.
Next low tide : in 2h 48m at 3:10 pm (2.1 ft)
Next high tide : 9:02 pm (9.7 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 5:47 am
Moon phase : First Quarter (69% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - May 2044

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun3:1010.55:567.411:15-1.511:033.66:117:58Waxing Crescent1Sun
2Mon4:069.97:047.412:17-1.26:107:59First Quarter2Mon
3Tue5:119.28:067.712:233.61:23-0.86:098:00First Quarter3Tue
4Wed6:278.48:598.11:563.32:29-0.56:088:01First Quarter4Wed
5Thu7:487.89:448.63:202.73:29-0.16:078:02First Quarter5Thu
6Fri9:097.410:239.04:282.04:210.36:068:02Waxing Gibbous6Fri
7Sat10:237.210:589.45:241.25:070.86:058:03Waxing Gibbous7Sat
8Sun11:297.111:299.76:130.55:491.36:048:04Waxing Gibbous8Sun
9Mon12:297.26:56-0.16:281.96:038:05Waxing Gibbous9Mon
10Tue1:237.27:34-0.57:052.46:028:06Full Moon10Tue
11Wed12:269.92:157.38:10-0.77:422.96:018:07Full Moon11Wed
12Thu12:539.83:037.38:45-0.88:193.26:008:08Full Moon12Thu
13Fri1:229.73:507.29:20-0.88:573.55:598:09Full Moon13Fri
14Sat1:539.54:367.19:56-0.89:373.75:588:10Waning Gibbous14Sat
15Sun2:289.25:247.010:35-0.610:213.85:588:10Waning Gibbous15Sun
16Mon3:078.86:136.911:18-0.511:143.95:578:11Waning Gibbous16Mon
17Tue3:528.47:026.912:05-0.35:568:12Waning Gibbous17Tue
18Wed4:437.87:477.112:243.812:540.05:558:13Third Quarter18Wed
19Thu5:447.38:257.41:443.61:450.25:558:14Third Quarter19Thu
20Fri6:566.88:597.92:573.12:360.55:548:15Third Quarter20Fri
21Sat8:166.59:308.53:552.43:240.85:538:15Third Quarter21Sat
22Sun9:356.410:009.14:441.64:101.25:538:16Waning Crescent22Sun
23Mon10:496.610:329.85:280.74:541.75:528:17Waning Crescent23Mon
24Tue11:577.011:0710.46:11-0.25:392.25:518:18Waning Crescent24Tue
25Wed1:007.36:55-1.06:252.75:518:18New Moon25Wed
26Thu1:587.67:41-1.67:123.15:508:19New Moon26Thu
27Fri12:2711.32:557.88:28-2.08:023.35:508:20New Moon27Fri
28Sat1:1411.43:497.99:18-2.28:563.55:498:21Waxing Crescent28Sat
29Sun2:0411.24:437.910:10-2.19:563.55:498:21Waxing Crescent29Sun
30Mon2:5910.75:378.011:03-1.811:043.45:498:22Waxing Crescent30Mon
31Tue3:579.96:308.211:58-1.35:488:23Waxing Crescent31Tue
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 6:06 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 69% 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 First Quarter (69% 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