Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Saturday, June 20, 2026
The tide is currently rising in Upper Guadalupe Slough, CA.
Next low tide (tomorrow) : 1:44 am (2.3 ft)
Next high tide : in 45m at 6:55 pm (9.0 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 5:47 am
Moon phase : First Quarter (38% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Nov 2009

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:317.810:56 AM10.15:342.26:29-0.26:335:09Full Moon1Sun
2Mon12:227.911:27 AM10.56:092.67:06-0.66:345:08Full Moon2Mon
3Tue1:138.012:0110.76:473.07:47-1.06:355:07Full Moon3Tue
4Wed2:057.912:3910.87:273.38:31-1.16:365:06Waning Gibbous4Wed
5Thu3:007.91:2310.78:123.59:20-1.16:375:05Waning Gibbous5Thu
6Fri3:577.82:1310.49:053.710:14-1.06:385:04Waning Gibbous6Fri
7Sat4:577.73:109.810:093.711:13-0.76:395:03Waning Gibbous7Sat
8Sun5:567.94:189.111:313.66:405:03Third Quarter8Sun
9Mon6:528.25:368.412:15-0.31:023.26:415:02Third Quarter9Mon
10Tue7:418.77:007.91:180.12:212.56:425:01Third Quarter10Tue
11Wed8:259.38:227.62:170.53:271.76:435:00Waning Crescent11Wed
12Thu9:059.99:377.63:101.04:220.86:444:59Waning Crescent12Thu
13Fri9:4210.410:447.73:591.55:110.16:454:58Waning Crescent13Fri
14Sat10:1710.711:447.94:442.05:55-0.56:464:58Waning Crescent14Sat
15Sun10:5210.85:282.56:37-0.86:484:57New Moon15Sun
16Mon12:398.011:27 AM10.86:123.07:16-1.06:494:56New Moon16Mon
17Tue1:318.112:0110.66:553.37:55-1.06:504:56New Moon17Tue
18Wed2:198.012:3710.37:383.68:34-0.86:514:55Waxing Crescent18Wed
19Thu3:077.91:149.98:233.79:14-0.66:524:54Waxing Crescent19Thu
20Fri3:537.71:549.49:103.89:56-0.46:534:54Waxing Crescent20Fri
21Sat4:407.62:378.810:043.910:400.06:544:53Waxing Crescent21Sat
22Sun5:267.53:268.111:093.811:270.36:554:53First Quarter22Sun
23Mon6:107.64:247.512:253.66:564:52First Quarter23Mon
24Tue6:507.95:336.812:150.71:383.26:574:52First Quarter24Tue
25Wed7:268.26:546.41:051.12:392.66:584:52First Quarter25Wed
26Thu7:598.78:156.31:541.53:301.96:594:51First Quarter26Thu
27Fri8:319.29:296.52:411.94:121.27:004:51Waxing Gibbous27Fri
28Sat9:039.710:346.93:272.34:520.57:014:51Waxing Gibbous28Sat
29Sun9:3710.211:317.34:112.75:30-0.27:024:50Waxing Gibbous29Sun
30Mon10:1310.74:543.06:09-0.87:034:50Full Moon30Mon
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 10:19 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 38% 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 (38% 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