Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Friday, June 19, 2026
The tide is currently falling in Upper Guadalupe Slough, CA.
Next low tide : in 55m at 11:49 am (-0.9 ft)
Next high tide : 6:09 pm (8.7 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 - Jan 2012

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun6:279.07:205.912:241.82:191.87:225:00First Quarter1Sun
2Mon7:109.28:546.01:202.43:181.37:225:01First Quarter2Mon
3Tue7:549.410:066.42:192.94:090.87:225:02Waxing Gibbous3Tue
4Wed8:379.711:006.93:183.24:530.47:225:03Waxing Gibbous4Wed
5Thu9:199.911:437.24:103.45:310.07:225:03Waxing Gibbous5Thu
6Fri10:0010.24:573.46:07-0.37:225:04Waxing Gibbous6Fri
7Sat12:207.510:41 AM10.45:393.46:40-0.67:225:05Full Moon7Sat
8Sun12:547.811:21 AM10.56:193.37:13-0.87:225:06Full Moon8Sun
9Mon1:278.012:0210.56:583.17:46-0.97:225:07Full Moon9Mon
10Tue1:598.312:4310.37:393.08:21-0.97:225:08Full Moon10Tue
11Wed2:328.51:269.98:242.78:56-0.77:225:09Waning Gibbous11Wed
12Thu3:068.82:149.39:132.59:34-0.37:225:10Waning Gibbous12Thu
13Fri3:439.13:078.510:082.210:140.37:215:11Waning Gibbous13Fri
14Sat4:229.44:117.611:101.910:591.07:215:12Third Quarter14Sat
15Sun5:059.75:316.712:221.57:215:13Third Quarter15Sun
16Mon5:5410.07:086.31:371.07:215:14Third Quarter16Mon
17Tue6:4810.48:446.512:512.42:500.47:205:15Third Quarter17Tue
18Wed7:4610.710:017.12:032.93:53-0.27:205:16Waning Crescent18Wed
19Thu8:4410.911:007.63:153.14:49-0.77:195:17Waning Crescent19Thu
20Fri9:4011.111:498.14:213.15:39-1.07:195:18Waning Crescent20Fri
21Sat10:3311.25:203.06:24-1.27:185:19New Moon21Sat
22Sun12:328.511:22 AM11.16:132.87:06-1.27:185:20New Moon22Sun
23Mon1:118.812:0910.77:032.67:45-1.07:175:21New Moon23Mon
24Tue1:488.912:5510.27:512.48:22-0.77:175:22New Moon24Tue
25Wed2:239.01:399.58:382.28:57-0.27:165:24Waxing Crescent25Wed
26Thu2:569.02:248.79:252.19:320.37:155:25Waxing Crescent26Thu
27Fri3:299.03:117.810:142.010:081.07:155:26Waxing Crescent27Fri
28Sat4:029.04:056.911:081.910:451.67:145:27Waxing Crescent28Sat
29Sun4:379.05:126.212:091.87:135:28First Quarter29Sun
30Mon5:179.06:435.81:171.67:135:29First Quarter30Mon
31Tue6:049.08:295.912:202.92:251.47:125:30First Quarter31Tue
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 2:59 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 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