Water Temperature of the Thames River in New London, CT

Current Water Temperature

69.6°F

Measurement Time: Sunday, September 20, 2026, 9:30 PM EDT

Today's Tides

 High: September 20, 5:28 AM, 2.3 ft
Low: September 20, 11:34 AM, 1.1 ft
 High: September 20, 5:52 PM, 2.7 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

62°F
Light Rain Likely
Light Rain Likely
100%
SE 3 mph
62°F

Weather Forecast

Light Rain Likely
Tonight
60°F - Light Rain Likely
Partly Sunny
Monday
69°F - Partly Sunny
Mostly Cloudy then Chance Light Rain
Monday Night
53°F - Mostly Cloudy then Chance Light Rain
Chance Light Rain
Tuesday
65°F - Chance Light Rain
Chance Light Rain then Mostly Cloudy
Tuesday Night
52°F - Chance Light Rain then Mostly Cloudy
Partly Sunny
Wednesday
66°F - Partly Sunny
Mostly Cloudy
Wednesday Night
49°F - Mostly Cloudy
Slight Chance Rain Showers
Thursday
66°F - Slight Chance Rain Showers
Slight Chance Rain Showers
Thursday Night
49°F - Slight Chance Rain Showers
Chance Rain Showers
Friday
66°F - Chance Rain Showers
Chance Rain Showers
Friday Night
50°F - Chance Rain Showers
Chance Rain Showers
Saturday
68°F - Chance Rain Showers
Chance Rain Showers
Saturday Night
50°F - Chance Rain Showers
Chance Rain Showers
Sunday
70°F - Chance Rain Showers

Astronomical

Sunrise: 6:34 AM
Sun Transit: 12:41 AM
Sunset: 6:49 PM
Daylight: 12 hrs 15 mins
Moonrise: 3:55 PM
Moon Transit: 8:24 PM
Moonset: 12:56 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

9:57 AM - 12:27 AM
7:54 PM - 10:24 PM

Minor Periods

3:25 PM - 4:55 PM
12:00 AM - 12:00 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: 6:34 AM
Sun Transit: 12:41 AM
Sunset: 6:49 PM
Daylight: 12 hrs 15 mins
Moonrise: 3:55 PM
Moon Transit: 8:24 PM
Moonset: 12:56 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

9:57 AM - 12:27 AM
7:54 PM - 10:24 PM

Minor Periods

3:25 PM - 4:55 PM
12:00 AM - 12:00 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: 6:35 AM
Sun Transit: 12:41 AM
Sunset: 6:47 PM
Daylight: 12 hrs 12 mins
Moonrise: 4:29 PM
Moon Transit: 9:12 PM
Moonset: 12:58 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

10:46 AM - 1:16 PM
8:42 PM - 11:12 PM

Minor Periods

3:59 PM - 5:29 PM
12:28 AM - 1:58 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: 6:35 AM
Sun Transit: 12:41 AM
Sunset: 6:47 PM
Daylight: 12 hrs 12 mins
Moonrise: 4:29 PM
Moon Transit: 9:12 PM
Moonset: 12:58 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

10:46 AM - 1:16 PM
8:42 PM - 11:12 PM

Minor Periods

3:59 PM - 5:29 PM
12:28 AM - 1:58 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: 6:36 AM
Sun Transit: 12:41 AM
Sunset: 6:46 PM
Daylight: 12 hrs 10 mins
Moonrise: 4:57 PM
Moon Transit: 9:58 PM
Moonset: 2:03 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

11:33 AM - 2:03 PM
9:28 PM - 11:58 PM

Minor Periods

4:27 PM - 5:57 PM
1:33 AM - 3:03 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: 6:36 AM
Sun Transit: 12:41 AM
Sunset: 6:46 PM
Daylight: 12 hrs 10 mins
Moonrise: 4:57 PM
Moon Transit: 9:58 PM
Moonset: 2:03 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

11:33 AM - 2:03 PM
9:28 PM - 11:58 PM

Minor Periods

4:27 PM - 5:57 PM
1:33 AM - 3:03 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: 6:37 AM
Sun Transit: 12:40 AM
Sunset: 6:44 PM
Daylight: 12 hrs 7 mins
Moonrise: 5:21 PM
Moon Transit: 10:43 PM
Moonset: 3:09 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.9%

Best Times for Fishing or Hunting

Major Periods

12:18 AM - 2:48 PM
12:00 AM - 12:00 AM

Minor Periods

4:51 PM - 6:21 PM
2:39 AM - 4:09 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: 6:37 AM
Sun Transit: 12:40 AM
Sunset: 6:44 PM
Daylight: 12 hrs 7 mins
Moonrise: 5:21 PM
Moon Transit: 10:43 PM
Moonset: 3:09 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.9%

Best Times for Fishing or Hunting

Major Periods

12:18 AM - 2:48 PM
12:00 AM - 12:00 AM

Minor Periods

4:51 PM - 6:21 PM
2:39 AM - 4:09 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: 6:38 AM
Sun Transit: 12:40 AM
Sunset: 6:42 PM
Daylight: 12 hrs 4 mins
Moonrise: 5:43 PM
Moon Transit: 11:27 PM
Moonset: 4:16 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.0%

Best Times for Fishing or Hunting

Major Periods

1:03 PM - 3:33 PM
12:00 AM - 12:00 AM

Minor Periods

5:13 PM - 6:43 PM
3:46 AM - 5:16 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: 6:38 AM
Sun Transit: 12:40 AM
Sunset: 6:42 PM
Daylight: 12 hrs 4 mins
Moonrise: 5:43 PM
Moon Transit: 11:27 PM
Moonset: 4:16 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.0%

Best Times for Fishing or Hunting

Major Periods

1:03 PM - 3:33 PM
12:00 AM - 12:00 AM

Minor Periods

5:13 PM - 6:43 PM
3:46 AM - 5:16 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: 6:39 AM
Sun Transit: 12:39 AM
Sunset: 6:41 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:04 PM
Moon Transit: 12:00 AM
Moonset: 5:23 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

5:34 PM - 7:04 PM
4:53 AM - 6:23 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: 6:39 AM
Sun Transit: 12:39 AM
Sunset: 6:41 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:04 PM
Moon Transit: 12:00 AM
Moonset: 5:23 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

5:34 PM - 7:04 PM
4:53 AM - 6:23 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: 6:40 AM
Sun Transit: 12:39 AM
Sunset: 6:39 PM
Daylight: 11 hrs 59 mins
Moonrise: 6:27 PM
Moon Transit: 8:33 AM
Moonset: 6:31 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

8:03 AM - 10:33 AM
8:03 AM - 10:33 AM

Minor Periods

5:57 PM - 7:27 PM
6:01 AM - 7:31 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: 6:40 AM
Sun Transit: 12:39 AM
Sunset: 6:39 PM
Daylight: 11 hrs 59 mins
Moonrise: 6:27 PM
Moon Transit: 8:33 AM
Moonset: 6:31 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

8:03 AM - 10:33 AM
8:03 AM - 10:33 AM

Minor Periods

5:57 PM - 7:27 PM
6:01 AM - 7:31 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: 6:41 AM
Sun Transit: 12:39 AM
Sunset: 6:37 PM
Daylight: 11 hrs 56 mins
Moonrise: 6:50 PM
Moon Transit: 12:00 AM
Moonset: 7:42 AM
Moon Phase: Full
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:19 PM - 5:49 PM

Minor Periods

6:20 PM - 7:50 PM
7:12 AM - 8:42 AM

Action Rating: 4 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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