Tides Today & Tomorrow in South Norwalk, CT

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently falling in South Norwalk, CT.
Next low tide : in 3h 57m at 10:12 am (0.8 ft)
Next high tide : 4:18 pm (7.5 ft)
Sunset today : 7:48 pm
Sunrise tomorrow : 6:06 am
Moon phase : First Quarter (36% illuminated)
Tide Station Location : Station #8468448
Common Questions About Tides

South Norwalk, CT Tides - Apr 1936

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed7:246.97:576.81:120.71:420.55:366:18Waxing Gibbous1Wed
2Thu8:206.98:467.02:090.62:340.55:356:19Waxing Gibbous2Thu
3Fri9:086.99:277.12:590.43:190.55:336:20Waxing Gibbous3Fri
4Sat9:496.910:037.23:430.33:590.55:316:21Waxing Gibbous4Sat
5Sun10:256.910:357.34:230.24:340.65:306:22Full Moon5Sun
6Mon10:586.911:057.44:580.25:080.65:286:23Full Moon6Mon
7Tue11:296.811:367.45:320.15:400.75:266:24Full Moon7Tue
8Wed12:026.86:060.26:120.85:256:25Full Moon8Wed
9Thu12:097.512:376.86:400.26:450.95:236:26Waning Gibbous9Thu
10Fri12:467.41:166.77:180.37:231.05:216:27Waning Gibbous10Fri
11Sat1:277.41:596.67:590.48:061.15:206:29Waning Gibbous11Sat
12Sun2:137.32:486.58:470.68:581.25:186:30Waning Gibbous12Sun
13Mon3:057.23:426.59:410.69:581.25:176:31Third Quarter13Mon
14Tue4:027.14:426.710:400.711:041.05:156:32Third Quarter14Tue
15Wed5:057.05:446.911:400.65:146:33Third Quarter15Wed
16Thu6:117.16:457.412:100.712:400.45:126:34Waning Crescent16Thu
17Fri7:147.47:427.91:120.31:360.15:116:35Waning Crescent17Fri
18Sat8:137.78:368.42:10-0.32:30-0.25:096:36Waning Crescent18Sat
19Sun9:087.99:278.93:05-0.83:21-0.55:086:37Waning Crescent19Sun
20Mon10:008.210:179.23:57-1.24:12-0.75:066:38New Moon20Mon
21Tue10:518.311:079.34:48-1.45:01-0.75:056:39New Moon21Tue
22Wed11:418.211:579.15:38-1.55:51-0.75:036:40New Moon22Wed
23Thu12:328.16:28-1.36:42-0.55:026:41Waxing Crescent23Thu
24Fri12:488.91:247.87:20-1.07:36-0.15:006:42Waxing Crescent24Fri
25Sat1:428.42:197.58:13-0.68:320.24:596:43Waxing Crescent25Sat
26Sun3:388.04:177.210:10-0.210:330.65:577:44First Quarter26Sun
27Mon4:377.55:187.011:090.211:370.85:567:45First Quarter27Mon
28Tue5:417.16:216.912:100.55:557:47First Quarter28Tue
29Wed6:466.87:226.912:400.91:080.75:537:48First Quarter29Wed
30Thu7:496.78:187.01:410.92:030.85:527:49Waxing Gibbous30Thu
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 1:15 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 36% 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 (36% 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