Tides Today & Tomorrow in South San Diego Bay, CA

TIDE TIMES for Friday, July 31, 2026
The tide is currently rising in South San Diego Bay, CA.
Next low tide (tomorrow) : 5:40 am (-0.1 ft)
Next high tide : in 4h 22m at 10:52 pm (6.2 ft)
Sunset today : 7:47 pm
Sunrise tomorrow : 6:02 am
Moon phase : Waning Gibbous (95% illuminated)
Tide Station Location : Station #9410135
Common Questions About Tides

South San Diego Bay, CA Tides - Sep 1969

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon1:044.11:075.66:272.08:161.56:237:13Third Quarter1Mon
2Tue2:163.41:545.46:422.79:521.66:247:12Third Quarter2Tue
3Wed2:595.111:481.36:247:10Third Quarter3Wed
4Thu4:295.16:257:09Third Quarter4Thu
5Fri8:223.95:525.312:520.911:48 AM3.56:257:08Waning Crescent5Fri
6Sat8:324.26:485.71:330.612:483.16:267:07Waning Crescent6Sat
7Sun8:454.57:306.02:050.31:302.76:277:05Waning Crescent7Sun
8Mon9:004.78:066.32:320.02:062.36:277:04Waning Crescent8Mon
9Tue9:165.08:406.42:57-0.12:401.96:287:03Waning Crescent9Tue
10Wed9:355.39:136.43:22-0.13:131.56:297:01New Moon10Wed
11Thu9:565.69:456.23:460.03:461.26:297:00New Moon11Thu
12Fri10:185.810:195.94:080.24:191.06:306:59New Moon12Fri
13Sat10:415.910:545.44:300.64:530.86:316:57Waxing Crescent13Sat
14Sun11:066.111:344.84:511.05:320.76:316:56Waxing Crescent14Sun
15Mon11:336.15:101.56:180.86:326:55Waxing Crescent15Mon
16Tue12:244.212:066.15:292.07:190.96:326:53Waxing Crescent16Tue
17Wed1:343.512:535.95:452.58:461.06:336:52First Quarter17Wed
18Thu3:273.22:045.75:493.010:310.86:346:51First Quarter18Thu
19Fri3:425.711:540.36:346:49First Quarter19Fri
20Sat7:264.05:185.911:123.46:356:48First Quarter20Sat
21Sun7:464.66:306.312:51-0.212:292.86:366:46Waxing Gibbous21Sun
22Mon8:115.17:276.71:36-0.51:252.06:366:45Waxing Gibbous22Mon
23Tue8:385.68:176.82:15-0.62:141.36:376:44Waxing Gibbous23Tue
24Wed9:066.19:026.62:51-0.53:000.76:386:42Full Moon24Wed
25Thu9:356.49:466.33:24-0.23:430.36:386:41Full Moon25Thu
26Fri10:046.610:285.73:540.24:250.16:396:40Full Moon26Fri
27Sat10:336.611:115.14:230.85:060.16:406:38Waning Gibbous27Sat
28Sun11:026.511:574.44:481.45:490.36:406:37Waning Gibbous28Sun
29Mon11:326.25:102.16:360.76:416:36Waning Gibbous29Mon
30Tue12:523.812:035.85:232.67:351.06:426:34Waning Gibbous30Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9410135)

Common Questions About South San Diego Bay, CA Tides

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What time does the tide turn (slack tide) in South San Diego Bay, CA today?

Slack tide in South San Diego Bay, CA is approximately 2:16 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 South San Diego Bay, CA?

South San Diego Bay, CA is currently in a spring phase. Tonight's moon is 95% 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 South San Diego Bay, 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 South San Diego Bay, CA?

Tide predictions for South San Diego Bay, 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 South San Diego Bay, CA?

Tide data for South San Diego Bay, CA is sourced from NOAA Station #9410135. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9410135.

What is the moon phase in South San Diego Bay, CA tonight?

Tonight the moon over South San Diego Bay, CA is Waning Gibbous (95% illuminated). This places South San Diego Bay, 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