Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently falling in Upper Guadalupe Slough, CA.
Next low tide : in 1h 11m at 8:56 pm (2.9 ft)
Next high tide (tomorrow) : 2:02 am (11.2 ft)
Sunset today : 8:28 pm
Sunrise tomorrow : 5:59 am
Moon phase : New Moon (3% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Oct 2071

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu8:487.47:258.22:181.02:523.47:036:51First Quarter1Thu
2Fri9:457.78:318.13:221.03:573.27:046:49First Quarter2Fri
3Sat10:298.09:328.24:171.04:502.87:056:48Waxing Gibbous3Sat
4Sun11:038.210:268.45:040.95:352.47:066:46Waxing Gibbous4Sun
5Mon11:328.511:148.65:440.96:132.07:076:45Waxing Gibbous5Mon
6Tue12:008.86:190.96:481.67:086:43Waxing Gibbous6Tue
7Wed12:279.16:521.07:211.27:096:42Full Moon7Wed
8Thu12:428.712:559.47:241.27:540.87:106:40Full Moon8Thu
9Fri1:268.71:259.77:571.58:300.57:106:39Full Moon9Fri
10Sat2:118.61:569.98:311.89:080.27:116:37Full Moon10Sat
11Sun2:598.42:3110.09:082.19:500.07:126:36Waning Gibbous11Sun
12Mon3:508.13:099.99:492.510:37-0.17:136:35Waning Gibbous12Mon
13Tue4:487.93:549.810:362.911:30-0.17:146:33Waning Gibbous13Tue
14Wed5:537.74:489.511:343.27:156:32Third Quarter14Wed
15Thu7:037.75:529.212:320.012:483.37:166:30Third Quarter15Thu
16Fri8:127.97:078.91:400.22:143.27:176:29Third Quarter16Fri
17Sat9:128.48:248.82:500.23:322.77:186:28Third Quarter17Sat
18Sun10:028.99:378.93:530.34:362.17:196:26Waning Crescent18Sun
19Mon10:469.510:429.04:490.45:311.47:206:25Waning Crescent19Mon
20Tue11:269.911:429.15:380.56:210.77:216:24Waning Crescent20Tue
21Wed12:0410.36:240.87:070.27:226:22New Moon21Wed
22Thu12:389.012:4110.57:071.27:51-0.27:236:21New Moon22Thu
23Fri1:318.91:1610.57:491.68:34-0.47:246:20New Moon23Fri
24Sat2:238.71:5210.38:312.09:16-0.47:256:19New Moon24Sat
25Sun3:148.52:2810.09:142.59:58-0.37:266:17Waxing Crescent25Sun
26Mon4:058.23:059.69:592.910:42-0.17:276:16Waxing Crescent26Mon
27Tue4:597.93:459.110:493.211:290.27:286:15Waxing Crescent27Tue
28Wed5:577.74:318.511:493.57:296:14Waxing Crescent28Wed
29Thu6:587.65:258.012:210.51:033.67:306:13First Quarter29Thu
30Fri7:587.66:307.51:180.72:213.47:316:12First Quarter30Fri
31Sat8:507.87:427.32:190.93:293.17:326:10First Quarter31Sat
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 11:29 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 spring phase. Tonight's moon is 3% 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 New Moon (3% 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