Water Temperature of the Thames River in New London, CT

Current Water Temperature

45.5°F

Measurement Time: Thursday, April 30, 2026, 9:12 AM EDT

Today's Tides

Low: April 30, 3:41 AM, 0.1 ft
 High: April 30, 9:19 AM, 2.4 ft
Low: April 30, 3:37 PM, 0.4 ft
 High: April 30, 9:30 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

48°F
Light rain
Light rain
45.8°F
47.7°F
96%
S 5.1 mph
7.4 mph
46.5°F
47.4°F
0.02 in
100%
1 mi
1008 mbar
0.2

Five Day Weather Forecast

Moderate rain
Thu
H: 52°F
L: 47°F
Sunny
Fri
H: 55°F
L: 43°F
Partly Cloudy
Sat
H: 52°F
L: 40°F
Partly Cloudy
Sun
H: 52°F
L: 39°F
Sunny
Mon
H: 57°F
L: 41°F

Air Quality

AQI: 1 - Good
PM2.5: 6.25 μg/m3
PM10: 7.25 μg/m3
Carbon Monoxide: 162.85 μg/m3
Nitrogen Dioxide: 14.95 μg/m3
Sulphur Dioxide: 2.05 μg/m3
Ozone: 67 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 12:45 AM
Sunset: 7:45 PM
Daylight: 13 hrs 58 mins
Moonrise: 7:06 PM
Moon Transit: 12:00 AM
Moonset: 4:53 AM
Moon Phase: Full
Moon Illumination: 99.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:51 PM - 4:21 PM

Minor Periods

6:36 PM - 8:06 PM
4:23 AM - 5:53 AM

Action Rating: 5 out of 5

Thursday, April 30, 2026

Weather Forecast

Moderate rain
51.8°F
47.3°F
48.9°F
95%
0.2 in
89%
0%
7.6 mph
1.9


Air Quality

AQI: 1 - Good
PM2.5: 8.08 μg/m3
PM10: 10.26 μg/m3
Carbon Monoxide: 167.37 μg/m3
Nitrogen Dioxide: 11.72 μg/m3
Sulphur Dioxide: 1.82 μg/m3
Ozone: 75.52 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 12:45 AM
Sunset: 7:45 PM
Daylight: 13 hrs 58 mins
Moonrise: 7:06 PM
Moon Transit: 12:00 AM
Moonset: 4:53 AM
Moon Phase: Full
Moon Illumination: 99.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:51 PM - 4:21 PM

Minor Periods

6:36 PM - 8:06 PM
4:23 AM - 5:53 AM

Action Rating: 5 out of 5

Friday, May 1, 2026

Weather Forecast

Sunny
54.7°F
43.1°F
49.2°F
67%
0 in
0%
0%
15.9 mph
6.2


Air Quality

AQI: 1 - Good
PM2.5: 6.23 μg/m3
PM10: 6.93 μg/m3
Carbon Monoxide: 166.65 μg/m3
Nitrogen Dioxide: 9.6 μg/m3
Sulphur Dioxide: 1.93 μg/m3
Ozone: 76.12 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 12:45 AM
Sunset: 7:46 PM
Daylight: 14 hrs mins
Moonrise: 8:11 PM
Moon Transit: 12:15 AM
Moonset: 5:17 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:35 PM - 5:05 PM

Minor Periods

7:41 PM - 9:11 PM
4:47 AM - 6:17 AM

Action Rating: 4 out of 5

Saturday, May 2, 2026

Weather Forecast

Partly Cloudy
52.4°F
39.8°F
46.6°F
62%
0 in
0%
0%
12.1 mph
6.7


Air Quality

AQI: 1 - Good
PM2.5: 12.21 μg/m3
PM10: 15.19 μg/m3
Carbon Monoxide: 189.61 μg/m3
Nitrogen Dioxide: 11.45 μg/m3
Sulphur Dioxide: 2.55 μg/m3
Ozone: 88.72 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 12:45 AM
Sunset: 7:47 PM
Daylight: 14 hrs 3 mins
Moonrise: 9:15 PM
Moon Transit: 1:00 AM
Moonset: 5:44 AM
Moon Phase: Full
Moon Illumination: 98.4%

Best Times for Fishing or Hunting

Major Periods

12:30 AM - 3:00 AM
3:22 PM - 5:52 PM

Minor Periods

8:45 PM - 10:15 PM
5:14 AM - 6:44 AM

Action Rating: 4 out of 5

Sunday, May 3, 2026

Weather Forecast

Partly Cloudy
52.3°F
38.8°F
46.2°F
59%
0 in
0%
0%
14.5 mph
6.1


Air Quality

AQI: 1 - Good
PM2.5: 8.17 μg/m3
PM10: 8.75 μg/m3
Carbon Monoxide: 164.91 μg/m3
Nitrogen Dioxide: 13.09 μg/m3
Sulphur Dioxide: 2.34 μg/m3
Ozone: 78.12 μg/m3

Astronomical

Sunrise: 5:43 AM
Sun Transit: 12:45 AM
Sunset: 7:48 PM
Daylight: 14 hrs 5 mins
Moonrise: 10:17 PM
Moon Transit: 1:48 AM
Moonset: 6:18 AM
Moon Phase: Full
Moon Illumination: 94.4%

Best Times for Fishing or Hunting

Major Periods

1:18 AM - 3:48 AM
4:11 PM - 6:41 PM

Minor Periods

9:47 PM - 11:17 PM
5:48 AM - 7:18 AM

Action Rating: 4 out of 5

Monday, May 4, 2026

Weather Forecast

Sunny
57.4°F
40.9°F
48.6°F
60%
0 in
0%
0%
16.6 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 8.07 μg/m3
PM10: 8.93 μg/m3
Carbon Monoxide: 195.1 μg/m3
Nitrogen Dioxide: 12.11 μg/m3
Sulphur Dioxide: 2.33 μg/m3
Ozone: 66.92 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:45 AM
Sunset: 7:49 PM
Daylight: 14 hrs 8 mins
Moonrise: 11:14 PM
Moon Transit: 2:38 AM
Moonset: 6:58 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.0%

Best Times for Fishing or Hunting

Major Periods

2:08 AM - 4:38 AM
5:02 PM - 7:32 PM

Minor Periods

12:00 AM - 12:00 AM
6:28 AM - 7:58 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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