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 5h 24m 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 - Oct 1969

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed2:123.312:425.45:093.18:581.36:426:33Third Quarter1Wed
2Thu1:464.910:491.36:436:32Third Quarter2Thu
3Fri3:274.76:446:30Third Quarter3Fri
4Sat7:504.25:094.812:021.011:46 AM3.66:446:29Third Quarter4Sat
5Sun7:504.56:155.112:430.812:373.16:456:28Waning Crescent5Sun
6Mon7:584.87:015.41:140.51:132.56:466:27Waning Crescent6Mon
7Tue8:115.27:405.71:420.41:471.96:466:25Waning Crescent7Tue
8Wed8:275.68:175.82:080.32:211.36:476:24Waning Crescent8Wed
9Thu8:476.08:535.72:330.42:550.86:486:23New Moon9Thu
10Fri9:096.39:305.62:580.63:290.46:486:22New Moon10Fri
11Sat9:336.610:085.33:230.94:040.06:496:20New Moon11Sat
12Sun9:586.810:504.93:471.34:41-0.26:506:19New Moon12Sun
13Mon10:266.811:374.44:101.75:23-0.26:516:18Waxing Crescent13Mon
14Tue10:576.74:332.16:12-0.16:516:17Waxing Crescent14Tue
15Wed12:383.811:35 AM6.54:552.67:160.26:526:15Waxing Crescent15Wed
16Thu2:033.512:286.15:153.08:380.46:536:14First Quarter16Thu
17Fri1:485.710:090.46:546:13First Quarter17Fri
18Sat6:264.03:305.49:313.811:240.26:546:12First Quarter18Sat
19Sun6:444.55:075.411:283.26:556:11First Quarter19Sun
20Mon7:085.16:215.612:180.012:352.36:566:10Waxing Gibbous20Mon
21Tue7:355.77:195.71:000.01:261.46:576:09Waxing Gibbous21Tue
22Wed8:026.28:105.71:380.12:120.76:586:08Waxing Gibbous22Wed
23Thu8:306.78:565.52:120.42:550.16:586:06Full Moon23Thu
24Fri8:587.09:395.22:440.83:35-0.36:596:05Full Moon24Fri
25Sat9:267.010:224.83:151.24:14-0.57:006:04Full Moon25Sat
26Sun8:547.010:054.42:421.73:52-0.46:015:03Full Moon26Sun
27Mon9:226.710:524.03:072.14:31-0.26:025:02Waning Gibbous27Mon
28Tue9:506.411:503.63:272.65:140.26:025:01Waning Gibbous28Tue
29Wed10:195.93:393.06:060.66:035:00Waning Gibbous29Wed
30Thu1:173.410:52 AM5.53:253.37:110.96:044:59Waning Gibbous30Thu
31Fri11:435.08:301.16:054:58Third Quarter31Fri
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