Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Monday, June 22, 2026
The tide is currently rising in Upper Guadalupe Slough, CA.
Next low tide (tomorrow) : 4:04 am (1.2 ft)
Next high tide : in 5h 47m at 8:22 pm (9.5 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 5:47 am
Moon phase : First Quarter (59% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Aug 2006

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:076.26:269.11:172.112:242.56:128:16First Quarter1Tue
2Wed7:465.87:099.32:231.81:083.16:138:15First Quarter2Wed
3Thu9:446.07:589.63:271.32:113.66:148:14First Quarter3Thu
4Fri11:096.58:5210.04:260.73:264.06:148:13Waxing Gibbous4Fri
5Sat12:007.05:190.24:344.06:158:12Waxing Gibbous5Sat
6Sun12:407.56:07-0.45:323.96:168:11Waxing Gibbous6Sun
7Mon1:167.86:52-0.96:233.66:178:10Waxing Gibbous7Mon
8Tue1:508.17:35-1.27:133.26:188:08Full Moon8Tue
9Wed12:2611.52:248.58:17-1.38:042.86:198:07Full Moon9Wed
10Thu1:1711.32:578.98:57-1.28:562.36:208:06Full Moon10Thu
11Fri2:1010.83:329.49:37-0.89:521.86:208:05Waning Gibbous11Fri
12Sat3:0510.04:089.810:17-0.110:511.46:218:04Waning Gibbous12Sat
13Sun4:069.04:4710.210:570.711:551.16:228:03Waning Gibbous13Sun
14Mon5:157.95:2910.411:411.66:238:01Third Quarter14Mon
15Tue6:387.06:1610.51:050.912:312.56:248:00Third Quarter15Tue
16Wed8:196.77:1110.42:210.61:353.36:257:59Third Quarter16Wed
17Thu9:567.08:1210.33:350.32:543.76:257:58Third Quarter17Thu
18Fri11:077.69:1510.34:430.14:123.86:267:56Waning Crescent18Fri
19Sat11:588.010:1410.35:40-0.25:173.76:277:55Waning Crescent19Sat
20Sun12:408.26:28-0.36:103.56:287:54Waning Crescent20Sun
21Mon1:168.37:09-0.36:553.26:297:52New Moon21Mon
22Tue1:478.47:44-0.37:352.96:307:51New Moon22Tue
23Wed12:3310.02:158.48:15-0.18:132.76:317:50New Moon23Wed
24Thu1:129.72:398.48:440.18:492.46:317:48New Moon24Thu
25Fri1:499.33:018.69:100.59:252.26:327:47New Moon25Fri
26Sat2:288.73:238.79:360.910:022.06:337:45Waxing Crescent26Sat
27Sun3:088.23:468.910:021.410:421.86:347:44Waxing Crescent27Sun
28Mon3:547.54:129.110:292.011:271.66:357:43Waxing Crescent28Mon
29Tue4:486.94:429.110:582.66:367:41Waxing Crescent29Tue
30Wed6:016.45:219.212:201.511:32 AM3.26:367:40First Quarter30Wed
31Thu7:446.26:119.21:231.312:203.86:377:38First Quarter31Thu
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 12:13 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 59% 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 (59% 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