Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Tuesday, June 30, 2026
The tide is currently rising in Upper Guadalupe Slough, CA.
Next low tide : 8:54 am (-0.8 ft)
Next high tide : in 1h 05m at 12:47 am (10.1 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 5:50 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Oct 1995

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:467.66:429.41:210.21:333.37:036:52First Quarter1Sun
2Mon8:567.97:589.32:340.22:593.17:046:50First Quarter2Mon
3Tue9:538.49:119.33:410.24:122.67:056:49Waxing Gibbous3Tue
4Wed10:408.910:179.34:390.25:112.07:056:47Waxing Gibbous4Wed
5Thu11:219.411:179.35:300.36:031.47:066:46Waxing Gibbous5Thu
6Fri11:599.76:150.56:500.97:076:44Waxing Gibbous6Fri
7Sat12:129.312:3410.06:560.87:330.57:086:43Full Moon7Sat
8Sun1:039.11:0710.17:351.28:140.37:096:41Full Moon8Sun
9Mon1:528.91:4010.08:141.68:540.17:106:40Full Moon9Mon
10Tue2:418.52:119.98:522.19:330.17:116:38Waning Gibbous10Tue
11Wed3:298.22:449.69:312.510:130.27:126:37Waning Gibbous11Wed
12Thu4:197.83:189.310:132.910:560.47:136:35Waning Gibbous12Thu
13Fri5:127.53:578.911:003.311:430.67:146:34Waning Gibbous13Fri
14Sat6:127.34:438.511:573.57:156:33Third Quarter14Sat
15Sun7:177.25:398.112:380.81:113.67:156:31Third Quarter15Sun
16Mon8:207.36:457.81:391.02:303.57:166:30Third Quarter16Mon
17Tue9:107.67:567.62:421.13:363.17:176:28Third Quarter17Tue
18Wed9:508.09:037.73:381.14:282.77:186:27Waning Crescent18Wed
19Thu10:248.410:047.94:261.15:122.17:196:26Waning Crescent19Thu
20Fri10:558.810:598.25:081.15:521.57:206:24Waning Crescent20Fri
21Sat11:269.311:518.45:461.26:290.97:216:23Waning Crescent21Sat
22Sun11:589.86:241.47:070.37:226:22New Moon22Sun
23Mon12:418.612:3110.27:021.67:46-0.27:236:21New Moon23Mon
24Tue1:328.61:0710.67:411.98:28-0.67:246:19New Moon24Tue
25Wed2:248.61:4510.88:232.29:14-0.97:256:18New Moon25Wed
26Thu3:188.52:2810.89:082.510:02-1.07:266:17Waxing Crescent26Thu
27Fri4:158.33:1610.59:582.810:55-0.97:276:16Waxing Crescent27Fri
28Sat5:158.24:1010.110:573.111:53-0.67:286:15Waxing Crescent28Sat
29Sun5:198.14:139.411:103.211:57-0.36:295:13First Quarter29Sun
30Mon6:248.35:258.812:373.16:305:12First Quarter30Mon
31Tue7:258.66:458.31:040.12:002.66:315:11First Quarter31Tue
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 4:50 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 spring phase. Tonight's moon is 100% 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 Full Moon (100% 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