Tides Today & Tomorrow in New London, CT

TIDE TIMES for Monday, August 17, 2026
The tide is currently rising in New London, CT.
Next low tide (tomorrow) : 8:26 am (0.6 ft)
Next high tide (tomorrow) : in 3h 37m at 2:02 am (2.4 ft)
Sunset today : 7:45 pm
Sunrise tomorrow : 5:59 am
Moon phase : Waxing Crescent (27% illuminated)
Tide Station Location : Station #8461490
Common Questions About Tides

New London, CT Tides - Jun 1943

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue8:592.69:193.33:250.03:240.45:178:14New Moon1Tue
2Wed9:442.610:023.34:090.04:080.55:168:15New Moon2Wed
3Thu10:292.610:443.24:500.04:480.65:168:16New Moon3Thu
4Fri11:142.611:283.15:310.15:290.65:168:16New Moon4Fri
5Sat12:012.66:120.26:120.75:158:17Waxing Crescent5Sat
6Sun12:153.012:502.66:560.36:580.85:158:18Waxing Crescent6Sun
7Mon1:042.91:402.67:410.37:480.95:158:18Waxing Crescent7Mon
8Tue1:532.82:302.68:270.48:400.95:148:19Waxing Crescent8Tue
9Wed2:422.63:202.69:120.59:320.95:148:19First Quarter9Wed
10Thu3:322.54:122.69:580.510:250.95:148:20First Quarter10Thu
11Fri4:262.45:042.710:440.611:190.85:148:21First Quarter11Fri
12Sat5:212.45:532.911:300.65:148:21First Quarter12Sat
13Sun6:122.46:373.012:120.612:170.55:148:22Waxing Gibbous13Sun
14Mon6:582.57:193.21:030.41:040.55:148:22Waxing Gibbous14Mon
15Tue7:432.58:003.41:540.21:520.45:148:23Waxing Gibbous15Tue
16Wed8:282.68:443.62:450.02:420.35:148:23Full Moon16Wed
17Thu9:152.79:313.73:34-0.23:320.25:148:23Full Moon17Thu
18Fri10:032.810:203.74:23-0.34:230.15:148:24Full Moon18Fri
19Sat10:542.811:123.75:12-0.35:150.15:148:24Full Moon19Sat
20Sun11:492.96:02-0.36:110.15:148:24Waning Gibbous20Sun
21Mon12:083.512:472.96:56-0.27:120.25:148:24Waning Gibbous21Mon
22Tue1:063.41:472.97:52-0.18:150.35:148:25Waning Gibbous22Tue
23Wed2:053.22:473.08:480.09:190.35:158:25Third Quarter23Wed
24Thu3:032.93:493.09:440.110:230.45:158:25Third Quarter24Thu
25Fri4:052.74:533.110:410.211:270.45:158:25Third Quarter25Fri
26Sat5:092.55:533.111:370.35:168:25Waning Crescent26Sat
27Sun6:102.46:453.212:280.312:320.45:168:25Waning Crescent27Sun
28Mon7:032.47:333.21:240.31:250.55:168:25Waning Crescent28Mon
29Tue7:522.48:173.22:170.22:150.55:178:25Waning Crescent29Tue
30Wed8:382.49:003.23:060.23:030.65:178:25New Moon30Wed
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 5:14 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 27% 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 Waxing Crescent (27% 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