Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Friday, June 26, 2026
The tide is currently falling in Upper Guadalupe Slough, CA.
Next low tide : in 1h 38m at 5:45 pm (3.6 ft)
Next high tide : 10:55 pm (10.1 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 5:48 am
Moon phase : Waxing Gibbous (91% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Jan 2000

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat8:549.910:266.93:142.34:440.67:225:00Waning Crescent1Sat
2Sun9:3110.011:217.24:052.75:260.27:225:01Waning Crescent2Sun
3Mon10:0610.14:513.06:03-0.17:225:02Waning Crescent3Mon
4Tue12:087.510:40 AM10.25:343.26:37-0.47:225:02New Moon4Tue
5Wed12:497.711:14 AM10.26:143.47:10-0.57:225:03New Moon5Wed
6Thu1:267.811:49 AM10.26:513.47:42-0.67:225:04New Moon6Thu
7Fri2:007.912:2410.07:273.58:13-0.67:225:05New Moon7Fri
8Sat2:337.91:009.88:033.48:46-0.67:225:06Waxing Crescent8Sat
9Sun3:068.01:379.58:423.49:20-0.57:225:07Waxing Crescent9Sun
10Mon3:408.12:179.09:253.39:57-0.27:225:08Waxing Crescent10Mon
11Tue4:168.23:028.410:163.210:360.17:225:09Waxing Crescent11Tue
12Wed4:558.43:577.711:162.911:200.67:225:10First Quarter12Wed
13Thu5:368.75:097.012:262.57:215:11First Quarter13Thu
14Fri6:199.16:416.512:101.21:391.97:215:12First Quarter14Fri
15Sat7:069.68:186.51:061.82:471.27:215:13First Quarter15Sat
16Sun7:5510.29:416.92:082.33:470.37:215:14Waxing Gibbous16Sun
17Mon8:4510.810:487.53:112.74:41-0.47:205:15Waxing Gibbous17Mon
18Tue9:3611.311:448.04:122.95:32-1.17:205:16Waxing Gibbous18Tue
19Wed10:2711.65:103.06:21-1.57:195:17Full Moon19Wed
20Thu12:348.511:18 AM11.86:052.97:08-1.77:195:18Full Moon20Thu
21Fri1:208.812:0911.76:582.87:54-1.77:185:19Full Moon21Fri
22Sat2:049.012:5911.27:522.68:39-1.47:185:20Waning Gibbous22Sat
23Sun2:489.11:5010.58:472.59:23-1.07:175:21Waning Gibbous23Sun
24Mon3:309.22:429.69:442.410:07-0.47:175:22Waning Gibbous24Mon
25Tue4:139.23:388.510:452.210:520.37:165:23Waning Gibbous25Tue
26Wed4:579.24:417.411:522.111:401.17:165:25Third Quarter26Wed
27Thu5:429.26:006.61:041.87:155:26Third Quarter27Thu
28Fri6:299.27:356.212:341.92:141.57:145:27Third Quarter28Fri
29Sat7:179.29:076.41:352.53:181.17:135:28Third Quarter29Sat
30Sun8:059.310:186.82:403.04:120.77:135:29Waning Crescent30Sun
31Mon8:519.511:097.23:403.24:580.37:125:30Waning Crescent31Mon
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 8:20 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 spring phase. Tonight's moon is 91% 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 Waxing Gibbous (91% 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