Water Temperature of the Thames River in New London, CT

Current Water Temperature

40.3°F

Measurement Time: Monday, March 30, 2026, 11:12 AM EDT

Today's Tides

Low: March 30, 2:19 AM, 0.0 ft
 High: March 30, 8:16 AM, 2.6 ft
Low: March 30, 2:42 PM, 0.0 ft
 High: March 30, 8:31 PM, 2.8 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

50.4°F
Partly cloudy
Partly cloudy
44.5°F
55.9°F
74%
SW 17.4 mph
25.1 mph
53.9°F
47.2°F
0 in
75%
9 mi
1023 mbar
3.4

Five Day Weather Forecast

Sunny
Mon
H: 69°F
L: 37°F
Patchy rain nearby
Tue
H: 59°F
L: 46°F
Moderate rain
Wed
H: 64°F
L: 43°F
Heavy rain
Thu
H: 44°F
L: 38°F
Patchy rain nearby
Fri
H: 55°F
L: 38°F

Air Quality

AQI: 1 - Good
PM2.5: 8.55 μg/m3
PM10: 10.75 μg/m3
Carbon Monoxide: 202.85 μg/m3
Nitrogen Dioxide: 5.65 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 103 μg/m3

Astronomical

Sunrise: 6:35 AM
Sun Transit: 12:00 AM
Sunset: 7:11 PM
Daylight: 12 hrs 36 mins
Moonrise: 4:55 PM
Moon Transit: 11:26 PM
Moonset: 5:25 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.0%

Best Times for Fishing or Hunting

Major Periods

1:02 PM - 3:32 PM
12:00 AM - 12:00 AM

Minor Periods

4:25 PM - 5:55 PM
4:55 AM - 6:25 AM

Action Rating: 3 out of 5

Monday, March 30, 2026

Weather Forecast

Sunny
68.5°F
37.2°F
51.3°F
70%
0 in
0%
0%
18.8 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 8.58 μg/m3
PM10: 11.14 μg/m3
Carbon Monoxide: 192.97 μg/m3
Nitrogen Dioxide: 4.25 μg/m3
Sulphur Dioxide: 1.63 μg/m3
Ozone: 105.56 μg/m3

Astronomical

Sunrise: 6:35 AM
Sun Transit: 12:00 AM
Sunset: 7:11 PM
Daylight: 12 hrs 36 mins
Moonrise: 4:55 PM
Moon Transit: 11:26 PM
Moonset: 5:25 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.0%

Best Times for Fishing or Hunting

Major Periods

1:02 PM - 3:32 PM
12:00 AM - 12:00 AM

Minor Periods

4:25 PM - 5:55 PM
4:55 AM - 6:25 AM

Action Rating: 3 out of 5

Tuesday, March 31, 2026

Weather Forecast

Patchy rain nearby
58.5°F
45.5°F
51.2°F
87%
0.04 in
61%
0%
17.7 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 9.85 μg/m3
PM10: 12.55 μg/m3
Carbon Monoxide: 180.05 μg/m3
Nitrogen Dioxide: 7.19 μg/m3
Sulphur Dioxide: 1.74 μg/m3
Ozone: 93.48 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 12:00 AM
Sunset: 7:12 PM
Daylight: 12 hrs 39 mins
Moonrise: 6:02 PM
Moon Transit: 12:00 AM
Moonset: 5:46 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:45 PM - 4:15 PM

Minor Periods

5:32 PM - 7:02 PM
5:16 AM - 6:46 AM

Action Rating: 4 out of 5

Wednesday, April 1, 2026

Weather Forecast

Moderate rain
63.9°F
43°F
52.7°F
87%
0.33 in
84%
0%
19.9 mph
1.3


Air Quality

AQI: 1 - Good
PM2.5: 9.8 μg/m3
PM10: 12.69 μg/m3
Carbon Monoxide: 186.13 μg/m3
Nitrogen Dioxide: 4.79 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 97.84 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 12:00 AM
Sunset: 7:14 PM
Daylight: 12 hrs 42 mins
Moonrise: 7:07 PM
Moon Transit: 12:09 AM
Moonset: 6:07 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:28 PM - 4:58 PM

Minor Periods

6:37 PM - 8:07 PM
5:37 AM - 7:07 AM

Action Rating: 3 out of 5

Thursday, April 2, 2026

Weather Forecast

Heavy rain
44.3°F
37.8°F
41°F
89%
1.44 in
87%
0%
13.9 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 5.55 μg/m3
PM10: 6.29 μg/m3
Carbon Monoxide: 181.48 μg/m3
Nitrogen Dioxide: 8.85 μg/m3
Sulphur Dioxide: 1.84 μg/m3
Ozone: 78.96 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 12:00 AM
Sunset: 7:15 PM
Daylight: 12 hrs 45 mins
Moonrise: 8:12 PM
Moon Transit: 12:52 AM
Moonset: 6:27 AM
Moon Phase: Full
Moon Illumination: 99.5%

Best Times for Fishing or Hunting

Major Periods

12:22 AM - 2:52 AM
3:10 PM - 5:40 PM

Minor Periods

7:42 PM - 9:12 PM
5:57 AM - 7:27 AM

Action Rating: 4 out of 5

Friday, April 3, 2026

Weather Forecast

Patchy rain nearby
54.7°F
37.7°F
45.4°F
94%
0.13 in
87%
0%
15.9 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 3.38 μg/m3
PM10: 4.61 μg/m3
Carbon Monoxide: 165.93 μg/m3
Nitrogen Dioxide: 3.03 μg/m3
Sulphur Dioxide: 1.31 μg/m3
Ozone: 90.31 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 12:00 AM
Sunset: 7:16 PM
Daylight: 12 hrs 47 mins
Moonrise: 9:17 PM
Moon Transit: 1:35 AM
Moonset: 6:49 AM
Moon Phase: Full
Moon Illumination: 96.6%

Best Times for Fishing or Hunting

Major Periods

1:05 AM - 3:35 AM
3:54 PM - 6:24 PM

Minor Periods

8:47 PM - 10:17 PM
6:19 AM - 7:49 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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