Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Friday, June 19, 2026
The tide is currently rising in Upper Guadalupe Slough, CA.
Next low tide : 11:49 am (-0.9 ft)
Next high tide : in 4h 01m at 4:02 am (9.6 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 - Oct 2012

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon2:148.51:559.78:331.99:120.47:046:50Full Moon1Mon
2Tue2:598.22:239.69:072.49:490.47:056:49Waning Gibbous2Tue
3Wed3:457.82:539.49:432.810:270.57:056:47Waning Gibbous3Wed
4Thu4:357.43:289.210:213.111:100.67:066:46Waning Gibbous4Thu
5Fri5:317.14:088.911:063.57:076:44Waning Gibbous5Fri
6Sat6:356.94:578.512:000.812:043.77:086:43Third Quarter6Sat
7Sun7:457.05:578.212:580.91:223.87:096:41Third Quarter7Sun
8Mon8:467.27:068.02:031.02:433.67:106:40Third Quarter8Mon
9Tue9:327.58:168.03:050.93:473.27:116:38Third Quarter9Tue
10Wed10:098.09:228.23:580.84:382.77:126:37Waning Crescent10Wed
11Thu10:418.510:228.44:440.85:222.07:136:36Waning Crescent11Thu
12Fri11:129.111:188.75:260.86:031.37:146:34Waning Crescent12Fri
13Sat11:449.66:051.06:440.67:146:33Waning Crescent13Sat
14Sun12:138.912:1710.26:441.27:26-0.17:156:31New Moon14Sun
15Mon1:078.912:5210.77:251.68:11-0.67:166:30New Moon15Mon
16Tue2:018.91:3111.08:062.08:57-1.07:176:29New Moon16Tue
17Wed2:578.72:1311.18:512.49:47-1.17:186:27Waxing Crescent17Wed
18Thu3:558.43:0011.09:402.810:41-1.07:196:26Waxing Crescent18Thu
19Fri4:578.23:5210.510:363.111:39-0.77:206:25Waxing Crescent19Fri
20Sat6:048.04:529.911:453.37:216:23First Quarter20Sat
21Sun7:128.16:029.212:44-0.41:093.37:226:22First Quarter21Sun
22Mon8:168.37:198.61:520.02:373.07:236:21First Quarter22Mon
23Tue9:128.78:378.32:580.33:512.47:246:20First Quarter23Tue
24Wed9:599.19:508.13:570.64:521.87:256:18Waxing Gibbous24Wed
25Thu10:399.510:548.14:480.95:431.27:266:17Waxing Gibbous25Thu
26Fri11:159.711:508.15:331.26:270.77:276:16Waxing Gibbous26Fri
27Sat11:479.96:141.67:070.37:286:15Waxing Gibbous27Sat
28Sun12:428.112:169.96:522.07:430.17:296:14Full Moon28Sun
29Mon1:298.112:449.97:282.48:17-0.17:306:12Full Moon29Mon
30Tue2:148.01:129.88:032.78:50-0.27:316:11Full Moon30Tue
31Wed2:587.81:419.78:383.09:24-0.27:326:10Full Moon31Wed
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 7:55 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 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