Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Monday, June 22, 2026
The tide is currently falling in Upper Guadalupe Slough, CA.
Next low tide : in 3h 55m at 2:58 am (1.8 ft)
Next high tide : 7:38 am (6.4 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 5:47 am
Moon phase : First Quarter (49% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Oct 2007

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon5:437.74:2310.611:043.47:036:51Third Quarter1Mon
2Tue7:077.55:2410.012:30-0.412:153.87:046:50Third Quarter2Tue
3Wed8:307.66:379.51:45-0.11:493.97:056:48Third Quarter3Wed
4Thu9:368.07:569.13:010.03:193.67:066:47Third Quarter4Thu
5Fri10:258.49:109.04:070.14:283.17:066:45Waning Crescent5Fri
6Sat11:058.710:158.95:010.25:242.57:076:44Waning Crescent6Sat
7Sun11:399.011:118.85:450.36:112.07:086:42Waning Crescent7Sun
8Mon12:099.16:220.66:521.57:096:41Waning Crescent8Mon
9Tue12:018.612:349.36:551.07:291.07:106:40New Moon9Tue
10Wed12:488.412:579.47:251.48:040.77:116:38New Moon10Wed
11Thu1:338.11:199.57:541.98:370.57:126:37New Moon11Thu
12Fri2:187.91:409.58:232.59:090.37:136:35New Moon12Fri
13Sat3:037.62:049.58:522.99:430.27:146:34Waxing Crescent13Sat
14Sun3:517.42:329.49:223.310:210.27:156:32Waxing Crescent14Sun
15Mon4:457.13:059.29:553.711:040.37:166:31Waxing Crescent15Mon
16Tue5:476.93:459.010:344.011:550.47:176:30Waxing Crescent16Tue
17Wed7:026.84:368.611:314.27:176:28First Quarter17Wed
18Thu8:167.05:418.312:570.51:044.37:186:27First Quarter18Thu
19Fri9:097.36:568.22:040.52:414.07:196:26First Quarter19Fri
20Sat9:467.78:128.23:060.43:483.57:206:24First Quarter20Sat
21Sun10:168.29:238.34:000.34:392.77:216:23Waxing Gibbous21Sun
22Mon10:458.810:288.54:460.45:261.97:226:22Waxing Gibbous22Mon
23Tue11:149.411:308.75:290.66:100.97:236:20Waxing Gibbous23Tue
24Wed11:4410.16:090.96:550.07:246:19Full Moon24Wed
25Thu12:318.812:1710.86:501.57:41-0.77:256:18Full Moon25Thu
26Fri1:308.712:5311.37:312.08:28-1.37:266:17Full Moon26Fri
27Sat2:308.61:3211.58:142.69:17-1.57:276:16Waning Gibbous27Sat
28Sun3:318.42:1511.49:013.110:10-1.57:286:14Waning Gibbous28Sun
29Mon4:358.23:0311.09:533.511:06-1.27:296:13Waning Gibbous29Mon
30Tue5:428.03:5810.410:563.87:306:12Waning Gibbous30Tue
31Wed6:527.95:019.512:08-0.812:163.97:316:11Third Quarter31Wed
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 5:18 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 neap phase. Tonight's moon is 49% 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 minimum.

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 First Quarter (49% illuminated). This places Upper Guadalupe Slough, CA in a neap tide cycle, so tidal ranges are near their weekly minimum 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