Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Monday, June 29, 2026
The tide is currently rising in Upper Guadalupe Slough, CA.
Next low tide : 8:20 am (-0.7 ft)
Next high tide : in 2h 05m at 12:09 am (10.1 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 5:49 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Dec 1996

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun5:408.04:157.412:083.37:044:50Third Quarter1Sun
2Mon6:258.15:226.81:193.07:054:50Third Quarter2Mon
3Tue7:088.46:396.412:451.22:232.67:064:50Third Quarter3Tue
4Wed7:488.77:596.31:391.53:172.07:074:50Third Quarter4Wed
5Thu8:269.29:116.62:311.94:031.47:074:49Waning Crescent5Thu
6Fri9:029.610:136.93:202.14:430.77:084:49Waning Crescent6Fri
7Sat9:3910.111:087.34:062.45:210.17:094:49Waning Crescent7Sat
8Sun10:1610.511:587.74:512.65:59-0.57:104:50Waning Crescent8Sun
9Mon10:5610.95:342.76:38-0.97:114:50New Moon9Mon
10Tue12:458.011:37 AM11.16:192.97:19-1.37:124:50New Moon10Tue
11Wed1:328.312:2111.17:062.98:03-1.57:124:50New Moon11Wed
12Thu2:188.51:0710.97:552.98:48-1.47:134:50Waxing Crescent12Thu
13Fri3:058.71:5810.58:502.99:35-1.27:144:50Waxing Crescent13Fri
14Sat3:548.82:539.89:512.910:25-0.87:144:51Waxing Crescent14Sat
15Sun4:449.03:558.911:012.711:18-0.27:154:51First Quarter15Sun
16Mon5:359.35:087.912:202.47:164:51First Quarter16Mon
17Tue6:289.66:317.212:150.41:401.97:164:52First Quarter17Tue
18Wed7:2010.07:597.01:151.12:521.27:174:52First Quarter18Wed
19Thu8:1010.39:207.12:171.63:530.67:184:52Waxing Gibbous19Thu
20Fri8:5710.610:287.43:162.14:460.07:184:53Waxing Gibbous20Fri
21Sat9:4110.811:267.84:122.45:33-0.47:194:53Waxing Gibbous21Sat
22Sun10:2310.85:032.76:14-0.67:194:54Waxing Gibbous22Sun
23Mon12:168.111:03 AM10.75:512.96:53-0.87:194:54Full Moon23Mon
24Tue1:018.211:41 AM10.56:363.07:29-0.87:204:55Full Moon24Tue
25Wed1:428.312:1710.27:193.18:03-0.77:204:56Full Moon25Wed
26Thu2:208.312:549.88:013.18:37-0.57:214:56Full Moon26Thu
27Fri2:568.21:309.48:433.29:11-0.37:214:57Waning Gibbous27Fri
28Sat3:308.22:088.89:273.19:450.07:214:58Waning Gibbous28Sat
29Sun4:048.22:508.210:163.110:210.47:214:58Waning Gibbous29Sun
30Mon4:408.33:377.511:113.011:000.87:224:59Waning Gibbous30Mon
31Tue5:198.44:356.812:152.87:225:00Third 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 4:14 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 99% 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 (99% 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