Tides Today & Tomorrow in New London, CT

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently falling in New London, CT.
Next low tide : in 3h 02m at 9:22 pm (0.6 ft)
Next high tide (tomorrow) : 2:56 am (2.3 ft)
Sunset today : 7:43 pm
Sunrise tomorrow : 6:00 am
Moon phase : First Quarter (36% illuminated)
Tide Station Location : Station #8461490
Common Questions About Tides

New London, CT Tides - Oct 1941

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed6:042.86:253.012:060.312:300.45:445:31Waxing Gibbous1Wed
2Thu6:523.07:103.012:570.31:240.35:455:29Waxing Gibbous2Thu
3Fri7:353.17:532.91:440.32:120.35:465:27Full Moon3Fri
4Sat8:173.28:352.92:270.32:560.35:485:26Full Moon4Sat
5Sun8:583.29:162.83:060.33:370.35:495:24Full Moon5Sun
6Mon9:383.29:582.83:420.44:160.35:505:22Full Moon6Mon
7Tue10:193.210:412.74:180.54:570.35:515:21Waning Gibbous7Tue
8Wed11:033.111:282.64:550.65:400.45:525:19Waning Gibbous8Wed
9Thu11:493.05:350.86:260.55:535:17Waning Gibbous9Thu
10Fri12:182.512:382.96:200.97:150.65:545:16Waning Gibbous10Fri
11Sat1:092.41:282.87:101.08:050.65:555:14Third Quarter11Sat
12Sun2:012.42:212.78:031.08:560.65:565:13Third Quarter12Sun
13Mon2:572.43:182.78:591.09:480.65:575:11Third Quarter13Mon
14Tue3:552.44:162.79:550.910:390.55:585:09Third Quarter14Tue
15Wed4:482.65:072.810:510.811:270.46:005:08Waning Crescent15Wed
16Thu5:352.75:532.911:450.66:015:06Waning Crescent16Thu
17Fri6:183.06:363.012:140.312:370.46:025:05Waning Crescent17Fri
18Sat7:003.27:203.11:010.11:290.16:035:03Waning Crescent18Sat
19Sun7:433.58:053.11:470.02:20-0.16:045:02New Moon19Sun
20Mon8:283.78:513.12:33-0.13:10-0.36:055:00New Moon20Mon
21Tue9:153.89:403.03:20-0.14:00-0.36:064:59New Moon21Tue
22Wed10:053.810:322.94:08-0.14:53-0.36:074:57Waxing Crescent22Wed
23Thu10:593.711:302.85:000.05:48-0.26:094:56Waxing Crescent23Thu
24Fri11:573.55:570.16:47-0.16:104:54Waxing Crescent24Fri
25Sat12:312.712:583.36:590.37:470.06:114:53First Quarter25Sat
26Sun1:342.72:013.18:040.48:480.16:124:52First Quarter26Sun
27Mon2:392.63:062.99:090.59:480.26:134:50First Quarter27Mon
28Tue3:482.74:132.810:150.510:460.36:144:49First Quarter28Tue
29Wed4:532.75:122.711:170.511:400.36:164:48Waxing Gibbous29Wed
30Thu5:462.96:032.712:140.46:174:46Waxing Gibbous30Thu
31Fri6:323.06:482.612:300.31:070.36:184:45Waxing Gibbous31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8461490)

Common Questions About New London, CT Tides

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What time does the tide turn (slack tide) in New London, CT today?

Slack tide in New London, CT is approximately 12:09 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 New London, CT?

New London, 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 New London, 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 New London, CT?

Tide predictions for New London, 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 New London, CT?

Tide data for New London, CT is sourced from NOAA Station #8461490. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8461490.

What is the moon phase in New London, CT tonight?

Tonight the moon over New London, CT is First Quarter (36% illuminated). This places New London, 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