Water Temperature of the Thames River in New London, CT

Current Water Temperature

70.0°F

Measurement Time: Sunday, August 2, 2026, 8:06 AM EDT

Today's Tides

 High: August 2, 12:17 AM, 2.9 ft
Low: August 2, 6:45 AM, 0.3 ft
 High: August 2, 12:57 PM, 2.9 ft
Low: August 2, 7:18 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

73.4°F
Mist
Mist
77.5°F
77.8°F
96%
S 8.3 mph
13.1 mph
73.4°F
72.1°F
0 in
72%
6 mi
1016 mbar
1.1

Five Day Weather Forecast

Mist
Sun
H: 84°F
L: 70°F
Light rain shower
Mon
H: 73°F
L: 70°F
Mist
Tue
H: 80°F
L: 70°F
Mist
Wed
H: 74°F
L: 69°F
Patchy rain nearby
Thu
H: 82°F
L: 71°F

Air Quality

AQI: 1 - Good
PM2.5: 7.8 μg/m3
PM10: 11.9 μg/m3
Carbon Monoxide: 124 μg/m3
Nitrogen Dioxide: 2.6 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 78 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 12:54 AM
Sunset: 8:04 PM
Daylight: 14 hrs 20 mins
Moonrise: 9:55 PM
Moon Transit: 3:35 AM
Moonset: 9:48 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%

Best Times for Fishing or Hunting

Major Periods

3:05 AM - 5:35 AM
5:54 PM - 8:24 PM

Minor Periods

9:25 PM - 10:55 PM
9:18 AM - 10:48 AM

Action Rating: 4 out of 5

Small Craft Advisory issued August 1 at 1:54PM EDT until August 3 at 8:00PM EDT by NWS Upton NY

Effective: Sat August 1, 2026, 1:54 PM
Expires: Sun August 2, 2026, 5:00 AM

* WHAT...South winds 10 to 15 kt with gusts up to 25 kt and seas 1 to 3 feet expected. * WHERE...Long Island Sound east of Orient Point and the Connecticut River, and South Shore Bays from Jones Inlet through Shinnecock Bay. * WHEN...From 4 AM to 8 PM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.


Small Craft Advisory issued August 1 at 1:54PM EDT until August 4 at 6:00AM EDT by NWS Upton NY

Effective: Sat August 1, 2026, 1:54 PM
Expires: Sun August 2, 2026, 5:00 AM

* WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and seas 5 to 8 feet expected. * WHERE...Fire Island Inlet NY to Montauk Point NY out 20 nm. * WHEN...From midnight Sunday night 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, August 2, 2026

Weather Forecast

Mist
84.2°F
70.3°F
74.6°F
92%
0.05 in
65%
0%
11.2 mph
7.8


Air Quality

AQI: 1 - Good
PM2.5: 8.72 μg/m3
PM10: 13.22 μg/m3
Carbon Monoxide: 119.75 μg/m3
Nitrogen Dioxide: 2.82 μg/m3
Sulphur Dioxide: 0.59 μg/m3
Ozone: 80.46 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 12:54 AM
Sunset: 8:04 PM
Daylight: 14 hrs 20 mins
Moonrise: 9:55 PM
Moon Transit: 3:35 AM
Moonset: 9:48 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%

Best Times for Fishing or Hunting

Major Periods

3:05 AM - 5:35 AM
5:54 PM - 8:24 PM

Minor Periods

9:25 PM - 10:55 PM
9:18 AM - 10:48 AM

Action Rating: 4 out of 5

Monday, August 3, 2026

Weather Forecast

Light rain shower
73.4°F
69.5°F
71.3°F
97%
0.94 in
92%
0%
16.3 mph
5.7


Air Quality

AQI: 1 - Good
PM2.5: 5.84 μg/m3
PM10: 9.18 μg/m3
Carbon Monoxide: 111.46 μg/m3
Nitrogen Dioxide: 1.98 μg/m3
Sulphur Dioxide: 0.23 μg/m3
Ozone: 78.46 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 12:54 AM
Sunset: 8:03 PM
Daylight: 14 hrs 18 mins
Moonrise: 10:17 PM
Moon Transit: 12:00 AM
Moonset: 10:55 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
6:39 PM - 9:09 PM

Minor Periods

9:47 PM - 11:17 PM
10:25 AM - 11:55 AM

Action Rating: 2 out of 5

Tuesday, August 4, 2026

Weather Forecast

Mist
80.1°F
69.6°F
73.7°F
87%
0.03 in
60%
0%
8.3 mph
8.4


Air Quality

AQI: 1 - Good
PM2.5: 6.9 μg/m3
PM10: 7.73 μg/m3
Carbon Monoxide: 159.42 μg/m3
Nitrogen Dioxide: 5.44 μg/m3
Sulphur Dioxide: 0.61 μg/m3
Ozone: 102.04 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 12:54 AM
Sunset: 8:02 PM
Daylight: 14 hrs 16 mins
Moonrise: 10:42 PM
Moon Transit: 5:04 AM
Moonset: 12:05 AM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

4:34 AM - 7:04 AM
7:26 PM - 9:56 PM

Minor Periods

10:12 PM - 11:42 PM
11:35 AM - 1:05 PM

Action Rating: 2 out of 5

Wednesday, August 5, 2026

Weather Forecast

Mist
73.8°F
69.4°F
71.6°F
96%
0.09 in
84%
0%
9.6 mph
9.2


Air Quality

AQI: 1 - Good
PM2.5: 7.3 μg/m3
PM10: 9.6 μg/m3
Carbon Monoxide: 170.19 μg/m3
Nitrogen Dioxide: 6.54 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 82.79 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 12:54 AM
Sunset: 8:01 PM
Daylight: 14 hrs 13 mins
Moonrise: 11:12 PM
Moon Transit: 5:53 AM
Moonset: 1:18 PM
Moon Phase: Last Quarter
Moon Illumination: 43.2%

Best Times for Fishing or Hunting

Major Periods

5:23 AM - 7:53 AM
8:18 PM - 10:48 PM

Minor Periods

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

Action Rating: 4 out of 5

Thursday, August 6, 2026

Weather Forecast

Patchy rain nearby
82.2°F
70.9°F
75.6°F
86%
0.05 in
60%
0%
14.1 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 5.89 μg/m3
PM10: 8.19 μg/m3
Carbon Monoxide: 168.44 μg/m3
Nitrogen Dioxide: 4.98 μg/m3
Sulphur Dioxide: 0.72 μg/m3
Ozone: 83 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 12:54 AM
Sunset: 7:59 PM
Daylight: 14 hrs 11 mins
Moonrise: 12:12 AM
Moon Transit: 6:46 AM
Moonset: 2:34 PM
Moon Phase: Last Quarter
Moon Illumination: 32.3%

Best Times for Fishing or Hunting

Major Periods

6:16 AM - 8:46 AM
9:14 PM - 11:44 PM

Minor Periods

2:04 PM - 3:34 PM
12:00 AM - 12:00 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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