Water Temperature of the Thames River in New London, CT

Current Water Temperature

70.2°F

Measurement Time: Sunday, September 6, 2026, 11:00 AM EDT

Today's Tides

 High: September 6, 5:30 AM, 2.4 ft
Low: September 6, 11:50 AM, 0.6 ft
 High: September 6, 6:09 PM, 3.2 ft

Temperature Locations

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Local Points of Interest

Riverside Park; Groton, CT

Thames River

Station Name: New London
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 26 feet

Sensor Depth: -3 feet

Nearest Address:
United States Coast Guard Academy
New London, CT 06320
New London County

GPS Coordinates: 41.3717, -72.095525

Nearby Water Temperatures

Thames River, Groton, CT (1.7 mi)
Mystic River, Noank, CT (6.5 mi)
Mystic River, Mystic, CT (6.7 mi)
Mystic Harbor, Mystic, CT (6.8 mi)
Mystic River, Old Mystic, CT (6.9 mi)
East Branch Eightmile River, Lyme, CT (13 mi)
Yantic River, Norwich, CT (13 mi)
Eightmile River, East Haddam, CT (13.2 mi)
Connecticut River, Old Lyme, CT (13.6 mi)
Pawcatuck River, Westerly, RI (13.6 mi)
Orient Harbor, Orient, NY (19.6 mi)
Fort Pond Bay, Montauk, NY (23.4 mi)
Connecticut River, Middletown, CT (26.4 mi)
Natchaug River, Chaplin, CT (30.7 mi)
Hemlock Brook, Foster, RI (35.5 mi)

Weather for New London, Connecticut

Current Weather

65°F
Partly Sunny
Partly Sunny
84%
NE 6 mph
60°F

Weather Forecast

Partly Sunny then Slight Chance Rain Showers
Today
71°F - Partly Sunny then Slight Chance Rain Showers
Mostly Clear
Tonight
53°F - Mostly Clear
Sunny
Labor Day
78°F - Sunny
Mostly Clear
Monday Night
56°F - Mostly Clear
Sunny
Tuesday
80°F - Sunny
Partly Cloudy
Tuesday Night
59°F - Partly Cloudy
Partly Sunny
Wednesday
77°F - Partly Sunny
Chance Rain Showers
Wednesday Night
69°F - Chance Rain Showers
Chance Rain Showers
Thursday
83°F - Chance Rain Showers
Slight Chance Rain Showers then Partly Cloudy
Thursday Night
58°F - Slight Chance Rain Showers then Partly Cloudy
Mostly Sunny
Friday
73°F - Mostly Sunny
Mostly Clear
Friday Night
54°F - Mostly Clear
Sunny
Saturday
73°F - Sunny
Mostly Clear
Saturday Night
58°F - Mostly Clear

Astronomical

Sunrise: 6:20 AM
Sun Transit: 12:46 AM
Sunset: 7:13 PM
Daylight: 12 hrs 53 mins
Moonrise: 12:38 AM
Moon Transit: 8:44 AM
Moonset: 4:44 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:14 AM - 10:44 AM
12:00 AM - 12:00 AM

Minor Periods

4:14 PM - 5:44 PM
12:08 AM - 1:38 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:20 AM
Sun Transit: 12:46 AM
Sunset: 7:13 PM
Daylight: 12 hrs 53 mins
Moonrise: 12:38 AM
Moon Transit: 8:44 AM
Moonset: 4:44 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:14 AM - 10:44 AM
12:00 AM - 12:00 AM

Minor Periods

4:14 PM - 5:44 PM
12:08 AM - 1:38 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:20 AM
Sun Transit: 12:46 AM
Sunset: 7:13 PM
Daylight: 12 hrs 53 mins
Moonrise: 12:38 AM
Moon Transit: 8:44 AM
Moonset: 4:44 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:14 AM - 10:44 AM
12:00 AM - 12:00 AM

Minor Periods

4:14 PM - 5:44 PM
12:08 AM - 1:38 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:21 AM
Sun Transit: 12:46 AM
Sunset: 7:11 PM
Daylight: 12 hrs 50 mins
Moonrise: 1:53 AM
Moon Transit: 9:45 AM
Moonset: 5:25 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:15 AM - 11:45 AM

Minor Periods

4:55 PM - 6:25 PM
1:23 AM - 2:53 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:21 AM
Sun Transit: 12:46 AM
Sunset: 7:11 PM
Daylight: 12 hrs 50 mins
Moonrise: 1:53 AM
Moon Transit: 9:45 AM
Moonset: 5:25 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:15 AM - 11:45 AM

Minor Periods

4:55 PM - 6:25 PM
1:23 AM - 2:53 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:22 AM
Sun Transit: 12:46 AM
Sunset: 7:09 PM
Daylight: 12 hrs 47 mins
Moonrise: 3:11 AM
Moon Transit: 10:41 AM
Moonset: 5:57 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

12:12 AM - 2:42 AM
10:11 AM - 12:41 AM

Minor Periods

5:27 PM - 6:57 PM
2:41 AM - 4:11 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:22 AM
Sun Transit: 12:46 AM
Sunset: 7:09 PM
Daylight: 12 hrs 47 mins
Moonrise: 3:11 AM
Moon Transit: 10:41 AM
Moonset: 5:57 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

12:12 AM - 2:42 AM
10:11 AM - 12:41 AM

Minor Periods

5:27 PM - 6:57 PM
2:41 AM - 4:11 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 12:45 AM
Sunset: 7:08 PM
Daylight: 12 hrs 45 mins
Moonrise: 4:28 AM
Moon Transit: 11:33 AM
Moonset: 6:25 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

1:06 AM - 3:36 AM
11:03 AM - 1:33 PM

Minor Periods

5:55 PM - 7:25 PM
3:58 AM - 5:28 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 12:45 AM
Sunset: 7:08 PM
Daylight: 12 hrs 45 mins
Moonrise: 4:28 AM
Moon Transit: 11:33 AM
Moonset: 6:25 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

1:06 AM - 3:36 AM
11:03 AM - 1:33 PM

Minor Periods

5:55 PM - 7:25 PM
3:58 AM - 5:28 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:24 AM
Sun Transit: 12:45 AM
Sunset: 7:06 PM
Daylight: 12 hrs 42 mins
Moonrise: 5:42 AM
Moon Transit: 12:21 AM
Moonset: 6:48 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:55 AM - 4:25 AM
11:51 AM - 2:21 PM

Minor Periods

6:18 PM - 7:48 PM
5:12 AM - 6:42 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:24 AM
Sun Transit: 12:45 AM
Sunset: 7:06 PM
Daylight: 12 hrs 42 mins
Moonrise: 5:42 AM
Moon Transit: 12:21 AM
Moonset: 6:48 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:55 AM - 4:25 AM
11:51 AM - 2:21 PM

Minor Periods

6:18 PM - 7:48 PM
5:12 AM - 6:42 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:25 AM
Sun Transit: 12:44 AM
Sunset: 7:04 PM
Daylight: 12 hrs 39 mins
Moonrise: 6:54 AM
Moon Transit: 1:07 PM
Moonset: 7:10 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

2:42 AM - 5:12 AM
12:37 AM - 3:07 PM

Minor Periods

6:40 PM - 8:10 PM
6:24 AM - 7:54 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:25 AM
Sun Transit: 12:44 AM
Sunset: 7:04 PM
Daylight: 12 hrs 39 mins
Moonrise: 6:54 AM
Moon Transit: 1:07 PM
Moonset: 7:10 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

2:42 AM - 5:12 AM
12:37 AM - 3:07 PM

Minor Periods

6:40 PM - 8:10 PM
6:24 AM - 7:54 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 12:44 AM
Sunset: 7:03 PM
Daylight: 12 hrs 37 mins
Moonrise: 8:03 AM
Moon Transit: 1:52 PM
Moonset: 7:32 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

3:28 AM - 5:58 AM
1:22 PM - 3:52 PM

Minor Periods

7:02 PM - 8:32 PM
7:33 AM - 9:03 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 12:44 AM
Sunset: 7:03 PM
Daylight: 12 hrs 37 mins
Moonrise: 8:03 AM
Moon Transit: 1:52 PM
Moonset: 7:32 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

3:28 AM - 5:58 AM
1:22 PM - 3:52 PM

Minor Periods

7:02 PM - 8:32 PM
7:33 AM - 9:03 AM

Action Rating: 5 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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