Tides Today & Tomorrow in National City, San Diego Bay, CA

TIDE TIMES for Saturday, July 4, 2026
The tide is currently rising in National City, San Diego Bay, CA.
Next low tide : 6:41 pm (2.6 ft)
Next high tide : in 1h 48m at 1:37 pm (4.4 ft)
Sunset today : 8:00 pm
Sunrise tomorrow : 5:45 am
Moon phase : Waning Gibbous (80% illuminated)
Tide Station Location : Station #9410152
Common Questions About Tides

National City, San Diego Bay, CA Tides - Sep 2053

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon11:435.611:535.15:340.86:011.36:237:12Waning Gibbous1Mon
2Tue12:205.66:041.36:541.46:247:11Waning Gibbous2Tue
3Wed12:454.51:045.56:371.78:011.56:257:10Waning Gibbous3Wed
4Thu1:574.02:025.57:202.29:301.46:257:08Third Quarter4Thu
5Fri3:423.73:205.58:302.611:051.16:267:07Third Quarter5Fri
6Sat5:313.84:445.710:192.86:277:06Third Quarter6Sat
7Sun6:424.35:556.112:170.511:47 AM2.66:277:04Waning Crescent7Sun
8Mon7:304.86:546.51:110.012:522.16:287:03Waning Crescent8Mon
9Tue8:095.27:466.91:58-0.31:461.66:287:02Waning Crescent9Tue
10Wed8:465.78:347.02:39-0.52:341.16:297:00New Moon10Wed
11Thu9:226.09:196.93:17-0.63:200.76:306:59New Moon11Thu
12Fri9:576.210:026.73:53-0.44:040.56:306:58New Moon12Fri
13Sat10:336.310:466.24:280.04:470.46:316:56New Moon13Sat
14Sun11:086.211:315.65:020.55:320.56:326:55Waxing Crescent14Sun
15Mon11:456.05:351.06:200.76:326:54Waxing Crescent15Mon
16Tue12:195.012:245.76:091.67:131.16:336:52Waxing Crescent16Tue
17Wed1:164.31:075.46:442.28:161.46:336:51Waxing Crescent17Wed
18Thu2:303.92:025.07:262.79:421.56:346:50First Quarter18Thu
19Fri4:263.73:214.88:403.211:171.46:356:48First Quarter19Fri
20Sat6:193.94:494.810:453.26:356:47First Quarter20Sat
21Sun7:054.35:575.112:221.212:083.06:366:46First Quarter21Sun
22Mon7:334.66:465.31:060.912:562.66:376:44Waxing Gibbous22Mon
23Tue7:574.97:275.61:400.71:332.26:376:43Waxing Gibbous23Tue
24Wed8:205.28:035.82:100.52:071.76:386:41Waxing Gibbous24Wed
25Thu8:445.48:375.92:380.42:411.36:396:40Waxing Gibbous25Thu
26Fri9:085.79:116.03:060.43:141.06:396:39Full Moon26Fri
27Sat9:356.09:465.93:330.53:490.76:406:37Full Moon27Sat
28Sun10:026.110:235.64:000.74:250.56:416:36Full Moon28Sun
29Mon10:316.311:045.34:280.95:050.46:416:35Waning Gibbous29Mon
30Tue11:046.311:524.84:581.35:500.56:426:33Waning Gibbous30Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9410152)

Common Questions About National City, San Diego Bay, CA Tides

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

Slack tide in National City, San Diego Bay, CA is approximately 4:09 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 National City, San Diego Bay, CA?

National City, San Diego Bay, CA is currently in a spring phase. Tonight's moon is 80% 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 National City, 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 National City, San Diego Bay, CA?

Tide predictions for National City, 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 National City, San Diego Bay, CA?

Tide data for National City, San Diego Bay, CA is sourced from NOAA Station #9410152. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9410152.

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

Tonight the moon over National City, San Diego Bay, CA is Waning Gibbous (80% illuminated). This places National City, 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