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 : 8:25 pm (0.5 ft)
Next high tide : in 3h 16m at 1:39 pm (3.2 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 - Apr 1944

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:562.55:222.211:350.311:540.66:317:13First Quarter1Sat
2Sun6:002.46:192.312:290.46:297:14Waxing Gibbous2Sun
3Mon6:532.47:072.412:500.51:180.46:277:15Waxing Gibbous3Mon
4Tue7:392.57:512.51:400.42:020.36:267:16Waxing Gibbous4Tue
5Wed8:212.58:332.72:250.32:420.36:247:17Waxing Gibbous5Wed
6Thu9:012.59:142.83:050.23:190.36:227:18Waxing Gibbous6Thu
7Fri9:402.69:532.93:430.13:540.26:217:19Full Moon7Fri
8Sat10:182.610:302.94:200.14:280.26:197:20Full Moon8Sat
9Sun10:562.511:072.94:570.05:030.26:177:21Full Moon9Sun
10Mon11:342.511:432.95:360.05:400.36:167:23Full Moon10Mon
11Tue12:142.46:190.06:210.46:147:24Waning Gibbous11Tue
12Wed12:212.912:572.37:070.17:080.56:137:25Waning Gibbous12Wed
13Thu1:032.81:442.37:590.18:020.56:117:26Waning Gibbous13Thu
14Fri1:522.82:352.38:530.28:590.66:097:27Third Quarter14Fri
15Sat2:482.83:332.39:500.210:000.56:087:28Third Quarter15Sat
16Sun3:532.84:392.310:480.211:040.46:067:29Third Quarter16Sun
17Mon5:042.85:432.511:460.16:057:30Third Quarter17Mon
18Tue6:082.96:392.712:070.312:420.06:037:31Waning Crescent18Tue
19Wed7:032.97:313.01:070.11:35-0.16:027:32Waning Crescent19Wed
20Thu7:553.08:203.22:05-0.12:27-0.16:007:33Waning Crescent20Thu
21Fri8:453.09:093.43:00-0.33:16-0.25:597:34New Moon21Fri
22Sat9:353.09:573.53:53-0.44:04-0.25:577:35New Moon22Sat
23Sun10:242.910:453.54:43-0.54:50-0.15:567:36New Moon23Sun
24Mon11:142.811:353.45:32-0.45:380.15:547:38Waxing Crescent24Mon
25Tue12:052.76:23-0.36:280.35:537:39Waxing Crescent25Tue
26Wed12:263.212:592.67:16-0.17:230.45:527:40Waxing Crescent26Wed
27Thu1:213.01:542.58:110.18:200.65:507:41Waxing Crescent27Thu
28Fri2:172.82:492.49:060.29:200.75:497:42First Quarter28Fri
29Sat3:152.73:472.410:000.410:200.85:477:43First Quarter29Sat
30Sun4:162.54:472.410:550.511:200.85:467:44First Quarter30Sun
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 5:02 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 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