Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Sunday, July 5, 2026
The tide is currently rising in Upper Guadalupe Slough, CA.
Next low tide (tomorrow) : 12:33 am (2.7 ft)
Next high tide : in 3h 33m at 5:58 pm (8.5 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 5:53 am
Moon phase : Waning Gibbous (71% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Oct 1989

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun2:198.01:589.48:362.29:180.67:036:51New Moon1Sun
2Mon3:037.72:229.49:042.79:530.57:046:49Waxing Crescent2Mon
3Tue3:507.42:499.49:333.110:310.57:056:48Waxing Crescent3Tue
4Wed4:447.03:229.210:053.511:160.57:066:46Waxing Crescent4Wed
5Thu5:506.84:029.010:433.97:076:45Waxing Crescent5Thu
6Fri7:116.74:558.712:100.611:38 AM4.17:086:43First Quarter6Fri
7Sat8:336.86:018.51:150.61:114.27:096:42First Quarter7Sat
8Sun9:287.27:178.52:250.52:484.07:096:40First Quarter8Sun
9Mon10:057.68:318.63:290.33:563.57:106:39First Quarter9Mon
10Tue10:368.19:398.94:220.24:492.87:116:38Waxing Gibbous10Tue
11Wed11:068.710:429.15:080.15:361.97:126:36Waxing Gibbous11Wed
12Thu11:359.311:429.25:490.36:221.07:136:35Waxing Gibbous12Thu
13Fri12:0610.06:290.67:080.27:146:33Full Moon13Fri
14Sat12:419.212:3910.77:091.17:54-0.57:156:32Full Moon14Sat
15Sun1:409.01:1411.17:501.78:42-1.07:166:31Full Moon15Sun
16Mon2:398.81:5311.48:332.39:33-1.27:176:29Waning Gibbous16Mon
17Tue3:418.42:3511.39:192.910:26-1.27:186:28Waning Gibbous17Tue
18Wed4:478.13:2310.910:113.411:24-0.97:196:27Waning Gibbous18Wed
19Thu5:587.94:1810.211:143.77:206:25Third Quarter19Thu
20Fri7:127.85:229.412:29-0.512:373.97:216:24Third Quarter20Fri
21Sat8:218.06:378.71:39-0.12:093.77:226:23Third Quarter21Sat
22Sun9:188.37:558.22:480.23:283.27:236:21Third Quarter22Sun
23Mon10:038.69:108.03:490.44:322.67:246:20Waning Crescent23Mon
24Tue10:408.910:167.94:390.65:232.07:256:19Waning Crescent24Tue
25Wed11:119.111:137.85:211.06:071.47:266:18Waning Crescent25Wed
26Thu11:379.35:571.36:450.97:276:16Waning Crescent26Thu
27Fri12:057.712:009.56:301.87:200.57:286:15New Moon27Fri
28Sat12:547.712:239.67:012.27:520.27:296:14New Moon28Sat
29Sun1:407.611:45 AM9.76:312.77:240.06:305:13New Moon29Sun
30Mon1:247.612:109.87:013.17:56-0.26:315:12New Moon30Mon
31Tue2:097.512:389.77:323.48:30-0.26:325:11Waxing Crescent31Tue
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 9:15 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 transitional phase. Tonight's moon is 71% 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 Waning Gibbous (71% 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