Water Temperature of the Thames River in New London, CT

Current Water Temperature

55.9°F

Measurement Time: Thursday, May 14, 2026, 1:42 AM EDT

Today's Tides

Low: May 14, 2:09 AM, 0.1 ft
 High: May 14, 7:51 AM, 2.6 ft
Low: May 14, 2:02 PM, 0.3 ft
 High: May 14, 8:10 PM, 3.5 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

54°F
Overcast
Overcast
49.7°F
52.9°F
86%
S 15.2 mph
26.1 mph
51.5°F
49.4°F
0 in
100%
9 mi
1012 mbar
0

Five Day Weather Forecast

Heavy rain
Thu
H: 57°F
L: 50°F
Patchy rain nearby
Fri
H: 58°F
L: 46°F
Sunny
Sat
H: 65°F
L: 48°F
Patchy rain nearby
Sun
H: 68°F
L: 53°F
Sunny
Mon
H: 64°F
L: 54°F

Air Quality

PM2.5: 13.15 μg/m3
PM10: 18.55 μg/m3
Carbon Monoxide: 130.85 μg/m3
Nitrogen Dioxide: 1.85 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 111 μg/m3

Astronomical

Sunrise: 5:30 AM
Sun Transit: 12:44 AM
Sunset: 8:00 PM
Daylight: 14 hrs 29 mins
Moonrise: 3:47 AM
Moon Transit: 10:37 AM
Moonset: 5:43 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

12:10 AM - 2:40 AM
10:07 AM - 12:37 AM

Minor Periods

5:13 PM - 6:43 PM
3:17 AM - 4:47 AM

Action Rating: 2 out of 5

Thursday, May 14, 2026

Weather Forecast

Heavy rain
56.8°F
50.1°F
54.1°F
95%
1.33 in
92%
0%
15.4 mph
4.3


Air Quality

AQI: 1 - Good
PM2.5: 13.99 μg/m3
PM10: 19.28 μg/m3
Carbon Monoxide: 140.53 μg/m3
Nitrogen Dioxide: 3.62 μg/m3
Sulphur Dioxide: 1.31 μg/m3
Ozone: 108.8 μg/m3

Astronomical

Sunrise: 5:30 AM
Sun Transit: 12:44 AM
Sunset: 8:00 PM
Daylight: 14 hrs 29 mins
Moonrise: 3:47 AM
Moon Transit: 10:37 AM
Moonset: 5:43 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

12:10 AM - 2:40 AM
10:07 AM - 12:37 AM

Minor Periods

5:13 PM - 6:43 PM
3:17 AM - 4:47 AM

Action Rating: 2 out of 5

Friday, May 15, 2026

Weather Forecast

Patchy rain nearby
57.5°F
46.1°F
51.7°F
89%
0.1 in
87%
0%
10.7 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 6.15 μg/m3
PM10: 7.61 μg/m3
Carbon Monoxide: 145.25 μg/m3
Nitrogen Dioxide: 8.1 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 73.68 μg/m3

Astronomical

Sunrise: 5:29 AM
Sun Transit: 12:44 AM
Sunset: 8:01 PM
Daylight: 14 hrs 31 mins
Moonrise: 4:15 AM
Moon Transit: 11:31 AM
Moonset: 7:03 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

1:02 AM - 3:32 AM
11:01 AM - 1:31 PM

Minor Periods

6:33 PM - 8:03 PM
3:45 AM - 5:15 AM

Action Rating: 5 out of 5

Saturday, May 16, 2026

Weather Forecast

Sunny
64.8°F
48.2°F
56.3°F
77%
0 in
0%
0%
13.6 mph
4


Air Quality

AQI: 1 - Good
PM2.5: 7.56 μg/m3
PM10: 8.17 μg/m3
Carbon Monoxide: 191.89 μg/m3
Nitrogen Dioxide: 11.73 μg/m3
Sulphur Dioxide: 2.46 μg/m3
Ozone: 82.84 μg/m3

Astronomical

Sunrise: 5:28 AM
Sun Transit: 12:44 AM
Sunset: 8:02 PM
Daylight: 14 hrs 33 mins
Moonrise: 4:49 AM
Moon Transit: 12:30 AM
Moonset: 8:26 PM
Moon Phase: New
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

1:59 AM - 4:29 AM
12:00 AM - 2:30 PM

Minor Periods

7:56 PM - 9:26 PM
4:19 AM - 5:49 AM

Action Rating: 5 out of 5

Sunday, May 17, 2026

Weather Forecast

Patchy rain nearby
67.8°F
53.2°F
60.1°F
86%
0.07 in
76%
0%
11.4 mph
4


Air Quality

AQI: 1 - Good
PM2.5: 9.45 μg/m3
PM10: 11.95 μg/m3
Carbon Monoxide: 171.85 μg/m3
Nitrogen Dioxide: 6.25 μg/m3
Sulphur Dioxide: 1.95 μg/m3
Ozone: 133 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 12:44 AM
Sunset: 8:03 PM
Daylight: 14 hrs 35 mins
Moonrise: 5:33 AM
Moon Transit: 1:35 PM
Moonset: 9:45 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

3:02 AM - 5:32 AM
1:05 PM - 3:35 PM

Minor Periods

9:15 PM - 10:45 PM
5:03 AM - 6:33 AM

Action Rating: 5 out of 5

Monday, May 18, 2026

Weather Forecast

Sunny
64.4°F
54.2°F
59.3°F
84%
0 in
0%
0%
9.6 mph
5


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: 5:27 AM
Sun Transit: 12:44 AM
Sunset: 8:04 PM
Daylight: 14 hrs 37 mins
Moonrise: 6:30 AM
Moon Transit: 2:42 PM
Moonset: 10:55 PM
Moon Phase: New
Moon Illumination: 2.6%

Best Times for Fishing or Hunting

Major Periods

4:08 AM - 6:38 AM
2:12 PM - 4:42 PM

Minor Periods

10:25 PM - 11:55 PM
6:00 AM - 7:30 AM

Action Rating: 3 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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