Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Thursday, July 16, 2026
The tide is currently falling in Upper Guadalupe Slough, CA.
Next low tide : in 4h 02m at 9:49 am (-1.4 ft)
Next high tide : 3:59 pm (8.9 ft)
Sunset today : 8:28 pm
Sunrise tomorrow : 6:00 am
Moon phase : Waxing Crescent (8% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Jun 1976

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue2:469.45:017.710:31-0.810:383.25:488:23Waxing Crescent1Tue
2Wed3:318.95:457.911:14-0.711:373.15:488:24Waxing Crescent2Wed
3Thu4:228.46:308.212:00-0.45:478:24First Quarter3Thu
4Fri5:247.77:168.512:462.812:500.05:478:25First Quarter4Fri
5Sat6:387.18:029.12:012.41:450.55:478:25First Quarter5Sat
6Sun8:046.78:489.63:121.72:421.05:478:26First Quarter6Sun
7Mon9:296.79:3310.34:150.93:411.55:468:26Waxing Gibbous7Mon
8Tue10:476.910:1910.85:110.04:381.95:468:27Waxing Gibbous8Tue
9Wed11:557.411:0511.26:03-0.75:332.25:468:28Waxing Gibbous9Wed
10Thu12:547.86:52-1.26:272.55:468:28Full Moon10Thu
11Fri1:498.17:40-1.67:212.75:468:28Full Moon11Fri
12Sat12:3911.42:398.38:27-1.78:142.85:468:29Full Moon12Sat
13Sun1:2711.13:288.59:13-1.69:092.85:468:29Full Moon13Sun
14Mon2:1410.64:148.59:58-1.410:062.85:468:30Waning Gibbous14Mon
15Tue3:039.95:008.610:42-1.011:062.85:468:30Waning Gibbous15Tue
16Wed3:529.05:468.611:27-0.55:468:30Waning Gibbous16Wed
17Thu4:468.06:308.612:102.712:130.15:468:31Third Quarter17Thu
18Fri5:467.17:148.71:202.61:000.75:468:31Third Quarter18Fri
19Sat6:576.47:578.82:292.21:511.35:468:31Third Quarter19Sat
20Sun8:206.08:389.13:341.82:431.95:478:32Third Quarter20Sun
21Mon9:446.09:189.34:301.33:372.35:478:32Waning Crescent21Mon
22Tue10:566.29:569.65:180.84:282.75:478:32Waning Crescent22Tue
23Wed11:546.610:349.86:000.45:162.95:478:32Waning Crescent23Wed
24Thu12:416.96:380.06:003.15:488:32Waning Crescent24Thu
25Fri1:237.37:14-0.36:423.25:488:32New Moon25Fri
26Sat2:017.57:48-0.67:223.25:488:32New Moon26Sat
27Sun12:2910.32:387.78:21-0.88:033.25:498:33New Moon27Sun
28Mon1:0910.33:148.08:56-0.98:463.15:498:33New Moon28Mon
29Tue1:5010.13:508.29:32-0.99:323.05:508:33Waxing Crescent29Tue
30Wed2:339.84:288.510:10-0.810:222.85:508:32Waxing Crescent30Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9414549)

Common Questions About Upper Guadalupe Slough, CA Tides

Show All
What time does the tide turn (slack tide) in Upper Guadalupe Slough, CA today?

Slack tide in Upper Guadalupe Slough, CA is approximately 12:54 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 8% 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 (8% 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