Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Wednesday, July 8, 2026
The tide is currently rising in Upper Guadalupe Slough, CA.
Next low tide : 1:55 pm (2.2 ft)
Next high tide : in 3h 03m at 8:00 am (6.0 ft)
Sunset today : 8:31 pm
Sunrise tomorrow : 5:54 am
Moon phase : Third Quarter (39% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Sep 1986

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:548.06:450.06:353.26:387:37Waning Crescent1Mon
2Tue1:208.27:18-0.17:112.96:397:36New Moon2Tue
3Wed12:1010.01:458.47:49-0.27:472.56:407:34New Moon3Wed
4Thu12:5210.02:118.78:18-0.18:252.16:407:33New Moon4Thu
5Fri1:369.72:379.18:490.29:061.66:417:31New Moon5Fri
6Sat2:229.33:059.59:200.79:501.26:427:30Waxing Crescent6Sat
7Sun3:138.73:359.89:541.310:390.96:437:28Waxing Crescent7Sun
8Mon4:118.04:0910.010:302.011:350.66:447:27Waxing Crescent8Mon
9Tue5:227.34:5110.111:122.76:457:25First Quarter9Tue
10Wed6:516.95:4310.112:390.412:043.46:457:24First Quarter10Wed
11Thu8:336.96:4710.11:530.31:203.96:467:22First Quarter11Thu
12Fri9:577.38:0110.13:110.12:544.06:477:20First Quarter12Fri
13Sat10:547.89:1410.24:22-0.24:163.76:487:19Waxing Gibbous13Sat
14Sun11:388.310:2010.45:21-0.45:203.26:497:17Waxing Gibbous14Sun
15Mon12:168.66:11-0.56:142.76:507:16Waxing Gibbous15Mon
16Tue12:519.06:54-0.57:022.16:507:14Full Moon16Tue
17Wed12:1110.21:239.27:33-0.27:481.66:517:13Full Moon17Wed
18Thu1:029.91:539.48:090.28:321.36:527:11Full Moon18Thu
19Fri1:519.42:219.58:430.79:141.06:537:10Full Moon19Fri
20Sat2:408.72:499.69:171.49:560.86:547:08Waning Gibbous20Sat
21Sun3:318.13:169.59:512.110:390.76:557:07Waning Gibbous21Sun
22Mon4:277.53:449.410:262.811:250.86:557:05Waning Gibbous22Mon
23Tue5:327.14:189.111:063.46:567:04Waning Gibbous23Tue
24Wed6:556.85:008.812:180.911:59 AM3.96:577:02Third Quarter24Wed
25Thu8:346.85:568.51:221.01:214.26:587:00Third Quarter25Thu
26Fri9:507.17:068.42:341.02:564.26:596:59Third Quarter26Fri
27Sat10:367.48:188.43:420.94:043.97:006:57Third Quarter27Sat
28Sun11:087.79:218.74:380.64:553.57:006:56Waning Crescent28Sun
29Mon11:358.010:168.95:220.45:363.07:016:54Waning Crescent29Mon
30Tue11:598.311:069.25:590.36:132.57:026:53Waning Crescent30Tue
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 10:57 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 transitional phase. Tonight's moon is 39% 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 Third Quarter (39% 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