Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Friday, June 19, 2026
The tide is currently rising in Upper Guadalupe Slough, CA.
Next low tide : 11:49 am (-0.9 ft)
Next high tide : in 2h 25m at 4:02 am (9.6 ft)
Sunset today : 8:31 pm
Sunrise tomorrow : 5:47 am
Moon phase : Waxing Crescent (28% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Sep 2012

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:309.82:159.58:320.48:561.36:397:36Full Moon1Sat
2Sun2:179.22:459.59:070.99:381.26:397:35Waning Gibbous2Sun
3Mon3:038.63:159.59:411.410:201.26:407:33Waning Gibbous3Mon
4Tue3:518.03:469.410:172.011:051.26:417:32Waning Gibbous4Tue
5Wed4:447.44:209.210:552.611:551.36:427:30Waning Gibbous5Wed
6Thu5:466.95:009.011:393.16:437:29Third Quarter6Thu
7Fri7:036.65:498.812:531.312:363.56:447:27Third Quarter7Fri
8Sat8:306.66:488.72:001.31:523.76:447:26Third Quarter8Sat
9Sun9:426.97:528.73:091.23:103.76:457:24Third Quarter9Sun
10Mon10:317.28:558.94:081.04:123.46:467:22Waning Crescent10Mon
11Tue11:077.69:529.24:570.75:023.16:477:21Waning Crescent11Tue
12Wed11:378.010:449.45:380.55:452.76:487:19Waning Crescent12Wed
13Thu12:078.46:150.46:252.26:487:18Waning Crescent13Thu
14Fri12:368.96:490.37:041.66:497:16New Moon14Fri
15Sat12:219.71:069.47:240.57:451.16:507:15New Moon15Sat
16Sun1:109.61:379.87:590.78:280.66:517:13New Moon16Sun
17Mon2:019.42:1110.28:361.19:130.26:527:12Waxing Crescent17Mon
18Tue2:549.02:4910.59:161.610:030.06:537:10Waxing Crescent18Tue
19Wed3:528.53:3010.69:592.110:57-0.16:537:09Waxing Crescent19Wed
20Thu4:568.04:1810.510:472.611:58-0.16:547:07Waxing Crescent20Thu
21Fri6:097.65:1510.211:473.16:557:06First Quarter21Fri
22Sat7:297.56:219.81:070.11:043.46:567:04First Quarter22Sat
23Sun8:467.77:359.62:220.12:343.36:577:02First Quarter23Sun
24Mon9:488.18:499.43:320.23:523.06:587:01Waxing Gibbous24Mon
25Tue10:378.69:569.44:330.24:562.46:586:59Waxing Gibbous25Tue
26Wed11:199.010:579.45:240.25:501.96:596:58Waxing Gibbous26Wed
27Thu11:569.311:519.36:080.46:371.47:006:56Waxing Gibbous27Thu
28Fri12:299.56:470.77:191.07:016:55Full Moon28Fri
29Sat12:419.112:599.77:241.17:580.77:026:53Full Moon29Sat
30Sun1:288.81:289.77:591.58:360.57:036:52Full Moon30Sun
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 7:55 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 28% 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 Waxing Crescent (28% 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