Water Temperature of the Thames River in New London, CT

Current Water Temperature

61.3°F

Measurement Time: Sunday, June 21, 2026, 4:06 PM EDT

Today's Tides

 High: June 21, 3:05 AM, 2.7 ft
Low: June 21, 9:41 AM, 0.3 ft
 High: June 21, 3:44 PM, 3.0 ft
Low: June 21, 10:25 PM, 0.6 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

77.2°F
Partly Cloudy
Partly Cloudy
76.7°F
79.6°F
45%
SW 12.8 mph
21.2 mph
80.7°F
47.1°F
0 in
0%
9 mi
1010 mbar
3.8

Five Day Weather Forecast

Sunny
Sun
H: 85°F
L: 58°F
Heavy rain
Mon
H: 69°F
L: 60°F
Moderate rain
Tue
H: 72°F
L: 63°F
Sunny
Wed
H: 77°F
L: 60°F
Patchy rain nearby
Thu
H: 75°F
L: 61°F

Air Quality

AQI: 1 - Good
PM2.5: 9.3 μg/m3
PM10: 12.6 μg/m3
Carbon Monoxide: 108 μg/m3
Nitrogen Dioxide: 4 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 106 μg/m3

Astronomical

Sunrise: 5:15 AM
Sun Transit: 12:50 AM
Sunset: 8:26 PM
Daylight: 15 hrs 11 mins
Moonrise: 12:42 AM
Moon Transit: 6:47 PM
Moonset: 12:22 AM
Moon Phase: First Quarter
Moon Illumination: 38.5%

Best Times for Fishing or Hunting

Major Periods

8:23 AM - 10:53 AM
6:17 PM - 8:47 PM

Minor Periods

12:12 AM - 1:42 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Small Craft Advisory issued June 21 at 2:26PM EDT until June 23 at 6:00AM EDT by NWS Upton NY

Effective: Sun June 21, 2026, 2:26 PM
Expires: Mon June 22, 2026, 6:00 AM

* WHAT...South winds 15 to 20 kt with gusts up to 30 kt and seas 3 to 5 feet expected. * WHERE...Fire Island Inlet NY to Montauk Point NY out 20 nm. * WHEN...From 6 PM Monday to 6 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Sunday, June 21, 2026

Weather Forecast

Sunny
84.9°F
57.7°F
69.6°F
59%
0 in
3%
0%
13 mph
7.7


Air Quality

AQI: 1 - Good
PM2.5: 7.92 μg/m3
PM10: 9.48 μg/m3
Carbon Monoxide: 113.88 μg/m3
Nitrogen Dioxide: 6.85 μg/m3
Sulphur Dioxide: 0.58 μg/m3
Ozone: 83.38 μg/m3

Astronomical

Sunrise: 5:15 AM
Sun Transit: 12:50 AM
Sunset: 8:26 PM
Daylight: 15 hrs 11 mins
Moonrise: 12:42 AM
Moon Transit: 6:47 PM
Moonset: 12:22 AM
Moon Phase: First Quarter
Moon Illumination: 38.5%

Best Times for Fishing or Hunting

Major Periods

8:23 AM - 10:53 AM
6:17 PM - 8:47 PM

Minor Periods

12:12 AM - 1:42 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Monday, June 22, 2026

Weather Forecast

Heavy rain
69.1°F
59.6°F
63°F
83%
1.07 in
82%
0%
16.1 mph
1.9


Air Quality

AQI: 1 - Good
PM2.5: 13.38 μg/m3
PM10: 17.31 μg/m3
Carbon Monoxide: 141.38 μg/m3
Nitrogen Dioxide: 7.3 μg/m3
Sulphur Dioxide: 0.55 μg/m3
Ozone: 85.67 μg/m3

Astronomical

Sunrise: 5:15 AM
Sun Transit: 12:50 AM
Sunset: 8:26 PM
Daylight: 15 hrs 11 mins
Moonrise: 1:47 PM
Moon Transit: 7:29 PM
Moonset: 12:43 AM
Moon Phase: First Quarter
Moon Illumination: 49.7%

Best Times for Fishing or Hunting

Major Periods

9:06 AM - 11:36 AM
6:59 PM - 9:29 PM

Minor Periods

1:17 PM - 2:47 PM
12:13 AM - 1:43 AM

Action Rating: 2 out of 5

Tuesday, June 23, 2026

Weather Forecast

Moderate rain
71.7°F
63.3°F
67.2°F
91%
0.37 in
89%
0%
12.8 mph
2.1


Air Quality

AQI: 1 - Good
PM2.5: 9.64 μg/m3
PM10: 11.49 μg/m3
Carbon Monoxide: 146.03 μg/m3
Nitrogen Dioxide: 7.17 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 98.67 μg/m3

Astronomical

Sunrise: 5:15 AM
Sun Transit: 12:50 AM
Sunset: 8:26 PM
Daylight: 15 hrs 11 mins
Moonrise: 2:51 PM
Moon Transit: 8:12 PM
Moonset: 1:03 AM
Moon Phase: First Quarter
Moon Illumination: 61.0%

Best Times for Fishing or Hunting

Major Periods

9:48 AM - 12:18 AM
7:42 PM - 10:12 PM

Minor Periods

2:21 PM - 3:51 PM
12:33 AM - 2:03 AM

Action Rating: 2 out of 5

Wednesday, June 24, 2026

Weather Forecast

Sunny
76.6°F
60.4°F
69°F
71%
0 in
7%
0%
10.5 mph
8.7


Air Quality

AQI: 1 - Good
PM2.5: 5.77 μg/m3
PM10: 6.47 μg/m3
Carbon Monoxide: 183.08 μg/m3
Nitrogen Dioxide: 6.45 μg/m3
Sulphur Dioxide: 0.34 μg/m3
Ozone: 81.5 μg/m3

Astronomical

Sunrise: 5:16 AM
Sun Transit: 12:50 AM
Sunset: 8:26 PM
Daylight: 15 hrs 10 mins
Moonrise: 3:55 PM
Moon Transit: 8:56 PM
Moonset: 1:25 AM
Moon Phase: First Quarter
Moon Illumination: 71.7%

Best Times for Fishing or Hunting

Major Periods

10:31 AM - 1:01 PM
8:26 PM - 10:56 PM

Minor Periods

3:25 PM - 4:55 PM
12:55 AM - 2:25 AM

Action Rating: 3 out of 5

Thursday, June 25, 2026

Weather Forecast

Patchy rain nearby
74.6°F
60.8°F
67.9°F
74%
0.01 in
36%
0%
11 mph
1.4


Air Quality

AQI: 1 - Good
PM2.5: 5.2 μg/m3
PM10: 5.84 μg/m3
Carbon Monoxide: 169.67 μg/m3
Nitrogen Dioxide: 9.71 μg/m3
Sulphur Dioxide: 0.41 μg/m3
Ozone: 53.11 μg/m3

Astronomical

Sunrise: 5:16 AM
Sun Transit: 12:51 AM
Sunset: 8:26 PM
Daylight: 15 hrs 10 mins
Moonrise: 4:59 PM
Moon Transit: 9:42 PM
Moonset: 1:50 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.2%

Best Times for Fishing or Hunting

Major Periods

11:16 AM - 1:46 PM
9:12 PM - 11:42 PM

Minor Periods

4:29 PM - 5:59 PM
1:20 AM - 2:50 AM

Action Rating: 2 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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