Tides Today & Tomorrow in South San Diego Bay, CA

TIDE TIMES for Friday, July 31, 2026
The tide is currently falling in South San Diego Bay, CA.
Next low tide : in 28m at 4:52 pm (2.1 ft)
Next high tide : 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 - Nov 1969

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:174.69:421.06:064:58Third Quarter1Sat
2Sun5:554.22:574.410:073.710:330.96:074:57Third Quarter2Sun
3Mon5:534.64:204.511:083.011:100.96:074:56Third Quarter3Mon
4Tue6:015.05:214.711:482.311:420.86:084:55Waning Crescent4Tue
5Wed6:165.56:094.812:241.66:094:54Waning Crescent5Wed
6Thu6:376.06:544.912:120.912:590.96:104:53Waning Crescent6Thu
7Fri7:006.47:374.912:411.01:360.26:114:53Waning Crescent7Fri
8Sat7:276.88:204.91:101.32:13-0.46:124:52New Moon8Sat
9Sun7:567.29:044.71:401.52:52-0.86:134:51New Moon9Sun
10Mon8:287.39:524.42:111.83:34-1.06:144:50New Moon10Mon
11Tue9:027.410:474.12:422.24:20-1.06:154:50Waxing Crescent11Tue
12Wed9:417.211:543.83:142.55:12-0.86:154:49Waxing Crescent12Wed
13Thu10:276.83:502.96:12-0.56:164:49Waxing Crescent13Thu
14Fri1:153.711:26 AM6.24:403.27:21-0.26:174:48Waxing Crescent14Fri
15Sat2:483.912:435.66:263.68:330.06:184:47First Quarter15Sat
16Sun4:034.42:135.18:423.49:390.26:194:47First Quarter16Sun
17Mon4:484.93:474.810:242.710:330.46:204:46First Quarter17Mon
18Tue5:245.55:094.711:311.811:180.76:214:46Waxing Gibbous18Tue
19Wed5:566.16:144.612:230.96:224:45Waxing Gibbous19Wed
20Thu6:266.67:094.61:090.26:234:45Waxing Gibbous20Thu
21Fri6:576.97:584.512:331.31:51-0.36:244:45Waxing Gibbous21Fri
22Sat7:277.18:434.41:081.62:30-0.66:244:44Full Moon22Sat
23Sun7:577.19:254.21:412.03:07-0.86:254:44Full Moon23Sun
24Mon8:277.010:074.02:122.33:43-0.76:264:43Full Moon24Mon
25Tue8:586.710:533.82:402.54:20-0.56:274:43Full Moon25Tue
26Wed9:286.411:453.63:062.84:59-0.26:284:43Waning Gibbous26Wed
27Thu9:596.13:303.05:410.16:294:43Waning Gibbous27Thu
28Fri12:483.510:33 AM5.63:523.36:290.46:304:43Waning Gibbous28Fri
29Sat1:593.611:15 AM5.24:223.57:200.66:314:42Waning Gibbous29Sat
30Sun3:153.812:154.76:203.78:130.96:314:42Third Quarter30Sun
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 7:52 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 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