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 13m 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 - Jun 1941

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun2:162.83:042.69:060.39:240.75:178:14First Quarter1Sun
2Mon3:062.73:562.89:560.310:230.65:168:15First Quarter2Mon
3Tue4:052.74:522.910:480.311:230.45:168:16First Quarter3Tue
4Wed5:082.65:473.111:400.25:158:17Waxing Gibbous4Wed
5Thu6:082.76:393.412:220.312:330.25:158:17Waxing Gibbous5Thu
6Fri7:032.77:293.61:200.11:270.15:158:18Waxing Gibbous6Fri
7Sat7:562.88:193.72:16-0.12:210.05:158:19Waxing Gibbous7Sat
8Sun8:482.89:113.83:11-0.33:150.05:148:19Full Moon8Sun
9Mon9:422.910:023.84:03-0.44:080.05:148:20Full Moon9Mon
10Tue10:352.910:553.74:53-0.45:000.05:148:20Full Moon10Tue
11Wed11:292.911:483.55:43-0.35:540.15:148:21Waning Gibbous11Wed
12Thu12:252.96:35-0.26:500.35:148:21Waning Gibbous12Thu
13Fri12:433.31:222.87:290.07:500.45:148:22Waning Gibbous13Fri
14Sat1:393.12:182.88:230.18:500.55:148:22Waning Gibbous14Sat
15Sun2:342.83:142.89:160.39:500.65:148:23Third Quarter15Sun
16Mon3:292.64:112.810:080.410:500.65:148:23Third Quarter16Mon
17Tue4:272.45:082.910:590.611:470.65:148:23Third Quarter17Tue
18Wed5:262.36:022.911:490.75:148:24Third Quarter18Wed
19Thu6:202.36:493.012:410.612:360.75:148:24Waning Crescent19Thu
20Fri7:092.37:343.01:300.51:210.75:148:24Waning Crescent20Fri
21Sat7:552.48:173.12:150.42:050.75:148:25Waning Crescent21Sat
22Sun8:392.48:593.12:570.42:470.75:158:25Waning Crescent22Sun
23Mon9:232.59:403.13:370.33:290.65:158:25New Moon23Mon
24Tue10:062.510:203.14:150.24:090.65:158:25New Moon24Tue
25Wed10:482.610:593.14:530.14:490.65:158:25New Moon25Wed
26Thu11:312.611:383.15:330.15:310.65:168:25New Moon26Thu
27Fri12:152.76:150.16:180.65:168:25Waxing Crescent27Fri
28Sat12:193.01:012.77:010.17:100.65:178:25Waxing Crescent28Sat
29Sun1:023.01:482.87:480.18:060.65:178:25Waxing Crescent29Sun
30Mon1:492.92:352.98:370.29:030.55:178:25First Quarter30Mon
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