Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Wednesday, June 17, 2026
The tide is currently rising in Upper Guadalupe Slough, CA.
Next low tide : 10:06 pm (3.2 ft)
Next high tide : in 1h 52m at 4:36 pm (8.3 ft)
Sunset today : 8:31 pm
Sunrise tomorrow : 5:46 am
Moon phase : Waxing Crescent (10% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Mar 2015

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:359.211:198.14:352.75:210.16:396:01Waxing Gibbous1Sun
2Mon10:229.311:538.35:232.45:590.06:376:02Waxing Gibbous2Mon
3Tue11:059.26:042.26:320.16:366:03Full Moon3Tue
4Wed12:228.411:45 AM9.16:411.97:020.26:346:04Full Moon4Wed
5Thu12:498.412:228.97:151.77:300.46:336:05Full Moon5Thu
6Fri1:148.51:008.67:481.57:580.76:326:06Full Moon6Fri
7Sat1:398.71:378.38:211.38:271.06:306:07Waning Gibbous7Sat
8Sun3:058.83:177.99:561.29:561.47:297:08Waning Gibbous8Sun
9Mon3:348.84:017.410:341.110:291.87:277:09Waning Gibbous9Mon
10Tue4:068.84:536.911:181.011:052.27:267:10Waning Gibbous10Tue
11Wed4:438.85:586.512:090.97:247:11Waning Gibbous11Wed
12Thu5:298.77:206.31:110.87:237:12Third Quarter12Thu
13Fri6:258.78:456.412:533.02:200.67:217:13Third Quarter13Fri
14Sat7:318.89:546.92:133.23:290.37:207:14Third Quarter14Sat
15Sun8:419.010:457.53:333.14:300.07:187:15Waning Crescent15Sun
16Mon9:479.411:288.14:402.75:23-0.47:177:15Waning Crescent16Mon
17Tue10:489.85:362.16:12-0.67:157:16Waning Crescent17Tue
18Wed12:078.711:45 AM10.06:271.56:57-0.67:147:17Waning Crescent18Wed
19Thu12:459.312:4110.17:170.87:41-0.47:127:18New Moon19Thu
20Fri1:239.81:359.98:060.38:24-0.17:117:19New Moon20Fri
21Sat2:0210.12:309.58:56-0.19:080.47:097:20New Moon21Sat
22Sun2:4210.33:268.99:46-0.39:531.07:087:21Waxing Crescent22Sun
23Mon3:2310.34:258.310:39-0.410:411.67:067:22Waxing Crescent23Mon
24Tue4:0710.05:307.711:35-0.211:352.27:057:23Waxing Crescent24Tue
25Wed4:569.56:447.312:370.07:037:24First Quarter25Wed
26Thu5:519.08:047.212:412.71:450.37:027:25First Quarter26Thu
27Fri6:548.59:187.42:012.92:560.47:007:26First Quarter27Fri
28Sat8:048.110:167.73:202.94:010.46:597:26First Quarter28Sat
29Sun9:128.011:017.94:272.64:560.46:577:27Waxing Gibbous29Sun
30Mon10:138.111:378.25:212.35:410.56:567:28Waxing Gibbous30Mon
31Tue11:048.16:061.96:200.56:547:29Waxing Gibbous31Tue
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 7:21 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 10% 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 Crescent (10% 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