37.4350’ N, 122.0070’ W

Upper Guadalupe Slough, CA

58°
H -°
L 56°
SSW
0mph
Low tide
5:47 am

Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Friday, October 23, 2026
The tide is currently falling in Upper Guadalupe Slough, CA.
Next low tide : in 2h 45m at 5:47 am (1.1 ft)
Next high tide : 11:26 am (9.3 ft)
Sunset today : 6:20 pm
Sunrise tomorrow : 7:24 am
Moon phase : Waxing Gibbous (93% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Jan 1805

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue1:517.812:0710.27:113.58:01-0.77:305:08New Moon1Tue
2Wed2:217.912:449.97:473.48:32-0.77:305:09New Moon2Wed
3Thu2:508.01:229.68:273.39:04-0.67:305:09Waxing Crescent3Thu
4Fri3:208.22:029.09:103.19:37-0.37:305:10Waxing Crescent4Fri
5Sat3:528.42:488.310:002.910:130.27:305:11Waxing Crescent5Sat
6Sun4:258.73:447.510:582.610:510.87:305:12Waxing Crescent6Sun
7Mon5:019.14:566.712:052.17:305:13First Quarter7Mon
8Tue5:429.56:326.11:181.57:305:14First Quarter8Tue
9Wed6:2810.08:186.112:282.32:290.87:305:15First Quarter9Wed
10Thu7:2010.49:476.61:322.93:330.17:305:16Waxing Gibbous10Thu
11Fri8:1510.910:537.32:423.34:31-0.77:295:17Waxing Gibbous11Fri
12Sat9:1211.411:457.83:503.55:23-1.27:295:18Waxing Gibbous12Sat
13Sun10:0811.74:533.46:13-1.67:295:19Full Moon13Sun
14Mon12:308.311:02 AM11.85:513.26:59-1.77:295:20Full Moon14Mon
15Tue1:128.611:54 AM11.66:462.97:43-1.77:285:21Full Moon15Tue
16Wed1:528.912:4511.17:402.68:25-1.47:285:22Full Moon16Wed
17Thu2:319.11:3610.38:342.49:05-0.97:285:23Waning Gibbous17Thu
18Fri3:099.32:279.39:292.19:44-0.27:275:24Waning Gibbous18Fri
19Sat3:479.43:218.210:272.010:240.67:275:25Waning Gibbous19Sat
20Sun4:259.44:237.111:301.811:051.47:265:26Third Quarter20Sun
21Mon5:049.45:416.312:381.67:265:27Third Quarter21Mon
22Tue5:479.47:235.91:481.37:255:28Third Quarter22Tue
23Wed6:349.39:086.112:482.92:551.07:255:29Third Quarter23Wed
24Thu7:249.410:216.61:593.43:530.67:245:30Waning Crescent24Thu
25Fri8:169.511:097.13:103.74:430.37:245:31Waning Crescent25Fri
26Sat9:069.711:477.44:103.75:250.07:235:32Waning Crescent26Sat
27Sun9:529.94:593.66:02-0.37:225:33Waning Crescent27Sun
28Mon12:187.610:34 AM10.05:413.46:35-0.57:215:35New Moon28Mon
29Tue12:467.811:15 AM10.16:183.27:06-0.67:215:36New Moon29Tue
30Wed1:127.911:54 AM10.06:543.07:35-0.67:205:37New Moon30Wed
31Thu1:388.212:339.87:302.78:04-0.57:195:38New Moon31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9414549)

Common Questions About Upper Guadalupe Slough, CA Tides

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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 93% 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 Gibbous (93% 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