Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Monday, June 22, 2026
The tide is currently falling in Upper Guadalupe Slough, CA.
Next low tide : in 3h 26m at 2:58 am (1.8 ft)
Next high tide : 7:38 am (6.4 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 5:47 am
Moon phase : First Quarter (49% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Sep 2041

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun4:597.04:559.211:102.66:397:36First Quarter1Sun
2Mon6:166.55:379.212:301.411:50 AM3.26:397:35First Quarter2Mon
3Tue8:006.36:309.31:361.212:473.76:407:33First Quarter3Tue
4Wed9:426.77:349.62:490.82:124.06:417:32First Quarter4Wed
5Thu10:477.28:439.93:580.33:384.06:427:30Waxing Gibbous5Thu
6Fri11:317.79:4810.44:58-0.24:453.76:437:29Waxing Gibbous6Fri
7Sat12:088.15:50-0.65:413.26:447:27Waxing Gibbous7Sat
8Sun12:438.56:37-0.96:332.66:447:26Waxing Gibbous8Sun
9Mon1:179.07:21-0.97:232.06:457:24Full Moon9Mon
10Tue12:4011.01:519.48:02-0.78:141.36:467:23Full Moon10Tue
11Wed1:3510.62:259.98:43-0.29:050.86:477:21Full Moon11Wed
12Thu2:3210.03:0110.29:230.59:580.56:487:19Waning Gibbous12Thu
13Fri3:319.13:3810.410:041.310:540.36:487:18Waning Gibbous13Fri
14Sat4:358.34:1810.410:482.111:540.36:497:16Waning Gibbous14Sat
15Sun5:507.65:0310.111:392.96:507:15Third Quarter15Sun
16Mon7:197.35:569.71:010.412:443.56:517:13Third Quarter16Mon
17Tue8:527.47:009.32:150.42:103.96:527:12Third Quarter17Tue
18Wed10:057.88:109.13:280.43:343.96:537:10Third Quarter18Wed
19Thu10:588.19:179.04:320.44:403.66:537:09Waning Crescent19Thu
20Fri11:388.310:159.15:250.35:323.26:547:07Waning Crescent20Fri
21Sat12:118.46:070.36:152.86:557:06Waning Crescent21Sat
22Sun12:398.56:430.36:522.46:567:04Waning Crescent22Sun
23Mon1:038.57:140.47:272.16:577:02New Moon23Mon
24Tue12:299.01:258.77:420.77:591.76:587:01New Moon24Tue
25Wed1:088.81:468.98:081.08:321.46:586:59New Moon25Wed
26Thu1:488.52:089.18:341.49:041.16:596:58New Moon26Thu
27Fri2:308.22:319.39:001.89:390.97:006:56Waxing Crescent27Fri
28Sat3:167.82:569.49:282.310:180.77:016:55Waxing Crescent28Sat
29Sun4:077.43:259.49:592.911:020.67:026:53Waxing Crescent29Sun
30Mon5:107.04:019.410:353.411:550.57:036:52Waxing Crescent30Mon
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 5:18 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 neap phase. Tonight's moon is 49% 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 minimum.

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 (49% illuminated). This places Upper Guadalupe Slough, CA in a neap tide cycle, so tidal ranges are near their weekly minimum 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