37.4350’ N, 122.0070’ W

Upper Guadalupe Slough, CA

59°
H 64°
L 57°
SE
1mph
High tide
11:01 am

Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Thursday, October 22, 2026
The tide is currently rising in Upper Guadalupe Slough, CA.
Next low tide : 5:54 pm (1.7 ft)
Next high tide : in 1h 42m at 11:01 am (8.7 ft)
Sunset today : 6:21 pm
Sunrise tomorrow : 7:23 am
Moon phase : Waxing Gibbous (86% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Jul 1806

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue2:117.97:50-0.87:373.44:577:39Full Moon1Tue
2Wed12:319.92:437.98:23-0.78:183.34:577:39Full Moon2Wed
3Thu1:089.53:137.98:55-0.59:003.24:587:39Waning Gibbous3Thu
4Fri1:469.03:428.19:27-0.29:463.14:587:39Waning Gibbous4Fri
5Sat2:268.44:128.29:590.210:362.94:597:39Waning Gibbous5Sat
6Sun3:117.74:448.510:330.611:332.74:597:39Waning Gibbous6Sun
7Mon4:046.95:198.811:091.25:007:38Third Quarter7Mon
8Tue5:136.25:579.112:372.311:51 AM1.85:007:38Third Quarter8Tue
9Wed6:425.86:409.51:421.812:402.45:017:38Third Quarter9Wed
10Thu8:215.97:269.92:431.21:382.95:017:37Third Quarter10Thu
11Fri9:456.38:1510.43:380.52:413.25:027:37Waning Crescent11Fri
12Sat10:476.89:0710.94:29-0.13:423.45:037:37Waning Crescent12Sat
13Sun11:377.49:5811.45:16-0.84:403.45:037:36Waning Crescent13Sun
14Mon12:227.86:03-1.25:353.25:047:36New Moon14Mon
15Tue1:038.26:48-1.66:293.05:057:35New Moon15Tue
16Wed1:448.67:33-1.67:242.75:057:35New Moon16Wed
17Thu12:3611.42:239.08:17-1.58:212.35:067:34Waxing Crescent17Thu
18Fri1:3010.83:049.49:00-1.19:202.05:077:34Waxing Crescent18Fri
19Sat2:269.93:459.89:43-0.510:241.75:087:33Waxing Crescent19Sat
20Sun3:278.84:2810.110:280.311:331.55:087:33Waxing Crescent20Sun
21Mon4:367.75:1410.211:151.25:097:32First Quarter21Mon
22Tue5:586.86:0410.312:461.212:092.05:107:31First Quarter22Tue
23Wed7:336.56:5610.31:590.81:122.75:117:31First Quarter23Wed
24Thu9:056.77:5110.33:070.52:213.25:117:30Waxing Gibbous24Thu
25Fri10:167.28:4410.34:070.13:283.45:127:29Waxing Gibbous25Fri
26Sat11:107.69:3310.34:58-0.14:273.55:137:28Waxing Gibbous26Sat
27Sun11:547.810:1910.35:42-0.35:173.45:147:27Waxing Gibbous27Sun
28Mon12:318.06:20-0.36:013.35:157:27Full Moon28Mon
29Tue1:038.06:54-0.36:413.25:167:26Full Moon29Tue
30Wed1:318.17:25-0.37:193.05:167:25Full Moon30Wed
31Thu12:169.81:578.27:54-0.17:552.85:177:24Full 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 86% 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 (86% 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