Tides Today & Tomorrow in South Norwalk, CT

TIDE TIMES for Friday, August 21, 2026
The tide is currently falling in South Norwalk, CT.
Next low tide : in 9m at 1:00 pm (1.7 ft)
Next high tide : 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 - Jun 1931

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:098.512:467.46:42-0.66:510.45:238:18Full Moon1Mon
2Tue12:558.31:337.27:28-0.47:380.65:238:19Waning Gibbous2Tue
3Wed1:417.92:197.08:14-0.18:260.95:228:20Waning Gibbous3Wed
4Thu2:287.63:066.99:010.29:171.15:228:21Waning Gibbous4Thu
5Fri3:167.23:556.89:490.510:101.35:218:21Waning Gibbous5Fri
6Sat4:066.94:456.710:390.811:061.45:218:22Third Quarter6Sat
7Sun5:006.65:376.711:301.05:218:23Third Quarter7Sun
8Mon5:576.46:306.812:031.412:221.25:218:23Third Quarter8Mon
9Tue6:556.37:216.912:591.21:131.35:208:24Third Quarter9Tue
10Wed7:516.28:097.01:531.12:021.35:208:24Waning Crescent10Wed
11Thu8:436.38:547.22:430.92:491.45:208:25Waning Crescent11Thu
12Fri9:306.39:377.43:310.73:341.35:208:25Waning Crescent12Fri
13Sat10:136.410:177.64:150.54:161.35:208:26Waning Crescent13Sat
14Sun10:546.610:587.84:570.34:581.25:208:26New Moon14Sun
15Mon11:356.711:407.95:380.25:391.05:208:27New Moon15Mon
16Tue12:176.96:190.06:220.95:208:27New Moon16Tue
17Wed12:248.11:027.17:01-0.17:080.75:208:28New Moon17Wed
18Thu1:118.11:497.37:46-0.27:580.65:208:28Waxing Crescent18Thu
19Fri2:018.12:397.68:33-0.38:520.55:208:28Waxing Crescent19Fri
20Sat2:558.03:327.89:24-0.29:510.45:208:29Waxing Crescent20Sat
21Sun3:517.84:287.910:18-0.110:540.35:208:29First Quarter21Sun
22Mon4:527.55:278.111:160.011:580.15:218:29First Quarter22Mon
23Tue5:567.36:278.212:150.15:218:29First Quarter23Tue
24Wed7:017.27:288.31:010.01:150.35:218:29First Quarter24Wed
25Thu8:067.18:288.42:03-0.22:140.35:218:30Waxing Gibbous25Thu
26Fri9:087.19:248.43:02-0.33:120.45:228:30Waxing Gibbous26Fri
27Sat10:057.110:188.33:59-0.44:080.55:228:30Waxing Gibbous27Sat
28Sun10:577.111:078.24:51-0.45:000.55:228:30Full Moon28Sun
29Mon11:467.111:548.15:40-0.35:490.65:238:30Full Moon29Mon
30Tue12:327.06:26-0.26:350.75:238:30Full Moon30Tue
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 4:04 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