Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently falling in Upper Guadalupe Slough, CA.
Next low tide : in 7m at 9:05 am (-1.7 ft)
Next high tide : 3:19 pm (8.6 ft)
Sunset today : 8:28 pm
Sunrise tomorrow : 5:59 am
Moon phase : New Moon (3% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Oct 1977

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:227.83:389.210:262.711:100.77:036:51Waning Gibbous1Sat
2Sun5:177.44:168.911:113.111:590.97:046:50Waning Gibbous2Sun
3Mon6:207.15:038.512:083.47:056:48Third Quarter3Mon
4Tue7:317.06:008.212:571.01:223.67:066:47Third Quarter4Tue
5Wed8:387.27:068.02:021.12:413.57:076:45Third Quarter5Wed
6Thu9:317.58:148.03:051.13:463.27:086:44Third Quarter6Thu
7Fri10:127.99:188.24:011.04:382.87:086:42Waning Crescent7Fri
8Sat10:468.310:158.44:470.95:212.37:096:41Waning Crescent8Sat
9Sun11:178.711:088.75:280.86:001.77:106:39Waning Crescent9Sun
10Mon11:489.211:588.96:060.96:391.17:116:38Waning Crescent10Mon
11Tue12:209.76:431.07:170.57:126:36New Moon11Tue
12Wed12:489.012:5310.17:211.27:580.07:136:35New Moon12Wed
13Thu1:399.01:2910.58:001.58:42-0.47:146:33New Moon13Thu
14Fri2:328.92:0810.78:421.99:29-0.67:156:32Waxing Crescent14Fri
15Sat3:278.62:5010.79:272.310:19-0.77:166:31Waxing Crescent15Sat
16Sun4:268.33:3810.510:172.711:14-0.67:176:29Waxing Crescent16Sun
17Mon5:308.14:3310.011:173.07:186:28Waxing Crescent17Mon
18Tue6:408.05:389.512:16-0.312:323.27:196:27First Quarter18Tue
19Wed7:498.26:519.01:24-0.11:593.17:206:25First Quarter19Wed
20Thu8:528.58:098.62:330.23:212.77:216:24First Quarter20Thu
21Fri9:459.09:238.53:380.44:282.17:226:23Waxing Gibbous21Fri
22Sat10:309.410:298.54:340.65:231.57:236:21Waxing Gibbous22Sat
23Sun11:109.711:288.55:230.86:121.07:246:20Waxing Gibbous23Sun
24Mon11:469.96:071.16:550.57:256:19Waxing Gibbous24Mon
25Tue12:228.512:1910.06:471.57:340.27:266:18Full Moon25Tue
26Wed1:118.412:4910.07:251.88:110.07:276:16Full Moon26Wed
27Thu1:588.31:199.98:022.28:46-0.17:286:15Full Moon27Thu
28Fri2:438.11:499.78:392.69:21-0.17:296:14Full Moon28Fri
29Sat3:277.92:199.59:162.99:570.07:306:13Waning Gibbous29Sat
30Sun3:127.71:539.28:563.29:350.16:315:12Waning Gibbous30Sun
31Mon4:007.52:318.89:413.410:180.36:325:11Waning Gibbous31Mon
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 12:12 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 3% 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 New Moon (3% 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