Tides Today & Tomorrow in New London, CT

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently rising in New London, CT.
Next low tide : 9:22 pm (0.6 ft)
Next high tide : in 2h 26m at 2:30 pm (3.1 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 - Apr 1942

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:032.810:193.24:10-0.34:27-0.26:317:12Full Moon1Wed
2Thu10:452.811:033.24:56-0.45:10-0.26:307:13Full Moon2Thu
3Fri11:312.811:513.35:45-0.45:57-0.26:287:14Waning Gibbous3Fri
4Sat12:222.76:38-0.46:49-0.16:267:16Waning Gibbous4Sat
5Sun12:443.21:172.67:35-0.37:470.06:257:17Waning Gibbous5Sun
6Mon1:423.12:162.58:34-0.28:480.16:237:18Third Quarter6Mon
7Tue2:433.03:182.49:34-0.19:520.26:227:19Third Quarter7Tue
8Wed3:492.84:272.410:360.010:580.26:207:20Third Quarter8Wed
9Thu5:002.75:352.511:370.16:187:21Third Quarter9Thu
10Fri6:052.76:352.612:020.212:350.16:177:22Waning Crescent10Fri
11Sat7:012.77:272.71:030.11:300.16:157:23Waning Crescent11Sat
12Sun7:512.78:142.92:000.02:200.16:137:24Waning Crescent12Sun
13Mon8:372.78:583.02:520.03:070.16:127:25New Moon13Mon
14Tue9:202.79:403.03:39-0.13:500.16:107:26New Moon14Tue
15Wed10:032.610:213.04:22-0.14:290.26:097:27New Moon15Wed
16Thu10:452.611:023.05:03-0.15:070.36:077:28New Moon16Thu
17Fri11:282.511:453.05:440.05:450.46:067:29Waxing Crescent17Fri
18Sat12:142.56:260.16:250.66:047:31Waxing Crescent18Sat
19Sun12:312.81:032.47:110.27:100.76:027:32Waxing Crescent19Sun
20Mon1:192.71:532.47:580.37:590.86:017:33Waxing Crescent20Mon
21Tue2:092.62:442.38:460.48:510.85:597:34Waxing Crescent21Tue
22Wed3:022.53:372.39:360.49:450.85:587:35First Quarter22Wed
23Thu3:582.44:332.310:260.510:400.85:577:36First Quarter23Thu
24Fri4:572.45:282.411:170.511:350.75:557:37First Quarter24Fri
25Sat5:522.56:182.612:060.45:547:38First Quarter25Sat
26Sun6:402.67:012.812:280.512:530.35:527:39Waxing Gibbous26Sun
27Mon7:242.77:433.01:190.31:390.25:517:40Waxing Gibbous27Mon
28Tue8:072.78:243.22:100.12:250.15:497:41Waxing Gibbous28Tue
29Wed8:502.89:073.43:00-0.13:120.05:487:42Full Moon29Wed
30Thu9:352.99:513.63:49-0.33:58-0.15:477:43Full Moon30Thu
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 5:56 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 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