Tides Today & Tomorrow in South Norwalk, CT

TIDE TIMES for Friday, August 21, 2026
The tide is currently rising in South Norwalk, CT.
Next low tide (tomorrow) : 1:49 am (1.2 ft)
Next high tide : in 5h 45m at 7:09 pm (6.8 ft)
Sunset today : 7:43 pm
Sunrise tomorrow : 6:09 am
Moon phase : First Quarter (65% illuminated)
Tide Station Location : Station #8468448
Common Questions About Tides

South Norwalk, CT Tides - May 1931

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri11:268.011:419.05:22-1.15:35-0.45:527:49Full Moon1Fri
2Sat12:157.96:11-1.26:22-0.35:507:50Full Moon2Sat
3Sun12:288.91:037.86:59-1.17:10-0.15:497:51Full Moon3Sun
4Mon1:158.61:517.57:46-0.87:580.25:487:52Waning Gibbous4Mon
5Tue2:038.32:407.28:35-0.48:480.65:477:53Waning Gibbous5Tue
6Wed2:527.83:326.99:270.19:420.95:457:54Waning Gibbous6Wed
7Thu3:457.44:276.610:210.510:411.25:447:55Third Quarter7Thu
8Fri4:427.05:266.511:190.811:431.45:437:56Third Quarter8Fri
9Sat5:436.66:266.512:161.05:427:57Third Quarter9Sat
10Sun6:476.57:246.612:451.41:121.15:417:58Third Quarter10Sun
11Mon7:476.48:166.81:441.32:041.15:407:59Waning Crescent11Mon
12Tue8:426.49:017.02:371.02:521.15:398:00Waning Crescent12Tue
13Wed9:296.59:417.23:250.83:361.15:388:01Waning Crescent13Wed
14Thu10:116.610:187.34:090.64:171.15:378:02Waning Crescent14Thu
15Fri10:486.710:527.54:490.44:541.15:368:03Waning Crescent15Fri
16Sat11:246.711:277.75:270.35:301.15:358:04New Moon16Sat
17Sun12:006.86:030.26:051.05:348:05New Moon17Sun
18Mon12:047.812:386.86:400.16:421.05:338:06New Moon18Mon
19Tue12:447.91:196.97:190.07:220.95:328:07Waxing Crescent19Tue
20Wed1:277.92:046.98:020.08:090.95:318:08Waxing Crescent20Wed
21Thu2:157.92:547.08:500.19:020.95:308:09Waxing Crescent21Thu
22Fri3:087.83:487.19:420.210:020.95:298:10Waxing Crescent22Fri
23Sat4:067.64:477.310:400.211:080.85:298:11First Quarter23Sat
24Sun5:087.45:497.511:400.25:288:12First Quarter24Sun
25Mon6:157.36:517.812:160.512:400.25:278:13First Quarter25Mon
26Tue7:227.37:518.11:210.21:400.25:268:14Waxing Gibbous26Tue
27Wed8:257.48:498.42:22-0.22:370.15:268:14Waxing Gibbous27Wed
28Thu9:247.59:428.73:20-0.53:320.15:258:15Waxing Gibbous28Thu
29Fri10:197.610:338.74:14-0.74:250.05:258:16Waxing Gibbous29Fri
30Sat11:107.611:218.75:06-0.85:150.15:248:17Full Moon30Sat
31Sun11:597.55:55-0.86:040.25:248:18Full Moon31Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8468448)

Common Questions About South Norwalk, CT Tides

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What time does the tide turn (slack tide) in South Norwalk, CT today?

Slack tide in South Norwalk, CT is approximately 10:29 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 Norwalk, CT?

South Norwalk, CT is currently in a transitional phase. Tonight's moon is 65% 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 shifting between spring and neap.

What datum are South Norwalk, CT 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 Norwalk, CT?

Tide predictions for South Norwalk, CT 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 Norwalk, CT?

Tide data for South Norwalk, CT is sourced from NOAA Station #8468448. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8468448.

What is the moon phase in South Norwalk, CT tonight?

Tonight the moon over South Norwalk, CT is First Quarter (65% illuminated). This places South Norwalk, CT in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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