37.4350’ N, 122.0070’ W

Upper Guadalupe Slough, CA

59°
H 72°
L 57°
NW
1mph
High tide
8:31 am

Tides Today & Tomorrow in Upper Guadalupe Slough, CA

TIDE TIMES for Friday, September 4, 2026
The tide is currently rising in Upper Guadalupe Slough, CA.
Next low tide : 1:10 pm (3.8 ft)
Next high tide : in 1h 30m at 8:31 am (6.7 ft)
Sunset today : 7:32 pm
Sunrise tomorrow : 6:41 am
Moon phase : Third Quarter (45% illuminated)
Tide Station Location : Station #9414549
Common Questions About Tides

Upper Guadalupe Slough, CA Tides - Aug 1895

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu11:127.69:2110.54:51-0.34:173.85:127:16Waxing Gibbous1Thu
2Fri11:587.910:1010.55:38-0.45:123.75:127:15Waxing Gibbous2Fri
3Sat12:368.16:19-0.55:583.65:137:14Full Moon3Sat
4Sun1:098.16:56-0.56:403.45:147:13Full Moon4Sun
5Mon1:398.17:29-0.47:183.25:157:12Full Moon5Mon
6Tue12:1310.02:058.17:59-0.37:553.05:167:11Full Moon6Tue
7Wed12:509.62:288.38:270.08:332.85:177:10Waning Gibbous7Wed
8Thu1:289.12:518.48:540.39:122.65:177:08Waning Gibbous8Thu
9Fri2:078.43:158.79:210.89:552.45:187:07Waning Gibbous9Fri
10Sat2:517.73:428.99:491.410:422.15:197:06Waning Gibbous10Sat
11Sun3:437.04:129.110:202.011:381.95:207:05Third Quarter11Sun
12Mon4:526.44:499.310:542.75:217:04Third Quarter12Mon
13Tue6:306.05:349.512:421.611:39 AM3.35:227:03Third Quarter13Tue
14Wed8:276.16:289.71:521.212:453.85:237:01Third Quarter14Wed
15Thu9:516.77:3010.13:000.62:094.05:237:00Waning Crescent15Thu
16Fri10:417.28:3210.63:590.13:224.05:246:59Waning Crescent16Fri
17Sat11:207.69:3111.04:51-0.54:233.75:256:58Waning Crescent17Sat
18Sun11:558.010:2711.45:38-0.95:173.35:266:56Waning Crescent18Sun
19Mon12:308.46:22-1.26:092.75:276:55New Moon19Mon
20Tue1:038.97:04-1.27:012.25:286:54New Moon20Tue
21Wed12:1611.21:389.47:44-0.97:541.65:296:52New Moon21Wed
22Thu1:1010.62:139.88:24-0.38:491.25:296:51Waxing Crescent22Thu
23Fri2:079.72:4910.29:030.49:460.95:306:50Waxing Crescent23Fri
24Sat3:098.73:2810.49:441.310:480.75:316:48Waxing Crescent24Sat
25Sun4:197.74:1110.410:292.211:560.65:326:47First Quarter25Sun
26Mon5:447.05:0010.311:223.05:336:46First Quarter26Mon
27Tue7:256.95:5810.01:090.512:343.65:346:44First Quarter27Tue
28Wed8:577.27:039.82:240.42:013.95:346:43First Quarter28Wed
29Thu10:017.78:089.73:310.33:183.95:356:41Waxing Gibbous29Thu
30Fri10:478.09:079.84:280.14:183.65:366:40Waxing Gibbous30Fri
31Sat11:258.29:589.85:140.05:073.35:376:38Waxing Gibbous31Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9414549)

Common Questions About Upper Guadalupe Slough, CA Tides

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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 45% 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 Third Quarter (45% 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