Water Temperature of the Thames River in New London, CT

Current Water Temperature

70.3°F

Measurement Time: Friday, August 22, 2025, 5:18 PM EDT

Today's Tides

 Low: August 22, 3:34 AM, 0.14 ft
High: August 22, 9:13 AM, 2.80 ft
 Low: August 22, 3:44 PM, 0.33 ft
High: August 22, 9:39 PM, 3.19 ft

Temperature Locations

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Local Points of Interest

Riverside Park; Groton, CT

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Thames River

Station Name: New London
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 26 feet / 8 meters

Sensor Depth: -3.1 feet / -1.0 meters

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 (13.0 mi)
Yantic River, Norwich, CT (13.0 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

82.9°F
Partly cloudy
Conditions: Partly cloudy
Humidity: 37%
Feels Like: 83.1°F
Wind: SSW 5.6 mph
Wind Gusts: 8.2 mph
Pressure: 29.97 in
Precipitation: 0 in
Cloud Cover: 50%
Visibility: 9 mi
UV Index: 1.8

Five Day Weather Forecast

Sunny
Fri
H: 84°F
L: 57°F
Sunny
Sat
H: 83°F
L: 67°F
Partly Cloudy
Sun
H: 76°F
L: 70°F
Moderate rain
Mon
H: 75°F
L: 68°F
Sunny
Tue
H: 74°F
L: 60°F

Air Quality

AQI: 1 - Good
PM2.5: 12.77 μg/m3
PM10: 13.88 μg/m3
Carbon Monoxide: 525.4 μg/m3
Nitrogen Dioxide: 30.16 μg/m3
Sulphur Dioxide: 2.04 μg/m3
Ozone: 130 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 12:51 AM
Sunset: 7:37 PM
Daylight: 13 hrs 32 mins
Moonrise: 5:09 AM
Moon Transit: 12:27 AM
Moonset: 7:32 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

2:01 AM - 4:31 AM
11:57 AM - 2:27 PM

Minor Periods

7:02 PM - 8:32 PM
4:39 AM - 6:09 AM

Action Rating: 4 out of 5

Coastal Flood Advisory issued August 22 at 2:21AM EDT until August 22 at 10:00AM EDT by NWS Boston/Norton MA

Effective: Fri August 22, 2025, 2:21 AM
Expires: Fri August 22, 2025, 4:00 PM

* WHAT...Large breaking waves of 10 to 15 feet. Flooding of up to one foot deep on vulnerable coastal roads and some debris on roadways around high tide Friday morning and Friday evening. * WHERE...In Massachusetts, Southern Bristol County. In Rhode Island, Washington and Newport Counties. * WHEN...For the High Surf Advisory, until 8 PM EDT Saturday. For the first Coastal Flood Advisory, from 6 AM to 10 AM EDT this morning. For the second Coastal Flood Advisory, from 6 PM to 10 PM EDT this evening. * IMPACTS...Minor coastal flooding occurs along the most vulnerable shoreline locales in Newport, Portsmouth and Middletown. This includes flooding at parking lots near beaches in Newport, and a portion of Hazard Road. Minor coastal flooding also occurs on several streets in the Common Fence Point area. Dangerous swimming and surfing conditions and localized beach erosion.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Inexperienced swimmers should remain out of the water due to dangerous surf conditions.


Coastal Flood Advisory issued August 22 at 2:21AM EDT until August 22 at 10:00PM EDT by NWS Boston/Norton MA

Effective: Fri August 22, 2025, 2:21 AM
Expires: Fri August 22, 2025, 4:00 PM

* WHAT...Large breaking waves of 10 to 15 feet. Flooding of up to one foot deep on vulnerable coastal roads and some debris on roadways around high tide Friday morning and Friday evening. * WHERE...In Massachusetts, Southern Bristol County. In Rhode Island, Washington and Newport Counties. * WHEN...For the High Surf Advisory, until 8 PM EDT Saturday. For the first Coastal Flood Advisory, from 6 AM to 10 AM EDT this morning. For the second Coastal Flood Advisory, from 6 PM to 10 PM EDT this evening. * IMPACTS...Minor coastal flooding occurs along the most vulnerable shoreline locales in Newport, Portsmouth and Middletown. This includes flooding at parking lots near beaches in Newport, and a portion of Hazard Road. Minor coastal flooding also occurs on several streets in the Common Fence Point area. Dangerous swimming and surfing conditions and localized beach erosion.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Inexperienced swimmers should remain out of the water due to dangerous surf conditions.


High Surf Advisory issued August 22 at 2:21AM EDT until August 23 at 8:00PM EDT by NWS Boston/Norton MA

Effective: Fri August 22, 2025, 2:21 AM
Expires: Fri August 22, 2025, 4:00 PM

* WHAT...Large breaking waves of 10 to 15 feet. Flooding of up to one foot deep on vulnerable coastal roads and some debris on roadways around high tide Friday morning and Friday evening. * WHERE...In Massachusetts, Southern Bristol County. In Rhode Island, Washington and Newport Counties. * WHEN...For the High Surf Advisory, until 8 PM EDT Saturday. For the first Coastal Flood Advisory, from 6 AM to 10 AM EDT this morning. For the second Coastal Flood Advisory, from 6 PM to 10 PM EDT this evening. * IMPACTS...Minor coastal flooding occurs along the most vulnerable shoreline locales in Newport, Portsmouth and Middletown. This includes flooding at parking lots near beaches in Newport, and a portion of Hazard Road. Minor coastal flooding also occurs on several streets in the Common Fence Point area. Dangerous swimming and surfing conditions and localized beach erosion.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Inexperienced swimmers should remain out of the water due to dangerous surf conditions.


Coastal Flood Advisory issued August 22 at 2:21AM EDT until August 22 at 10:00AM EDT by NWS Boston/Norton MA

Effective: Fri August 22, 2025, 2:21 AM
Expires: Fri August 22, 2025, 4:00 PM

* WHAT...Large breaking waves of 10 to 15 feet. Flooding of up to one foot deep on vulnerable coastal roads and some debris on roadways around high tide Friday morning and Friday evening. * WHERE...Block Island RI. * WHEN...For the High Surf Advisory, until 8 PM EDT Saturday. For the first Coastal Flood Advisory, from 6 AM to 10 AM EDT this morning. For the second Coastal Flood Advisory, from 6 PM to 10 PM EDT this evening. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Dangerous swimming and surfing conditions and localized beach erosion.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Inexperienced swimmers should remain out of the water due to dangerous surf conditions.


Coastal Flood Advisory issued August 22 at 2:21AM EDT until August 22 at 10:00PM EDT by NWS Boston/Norton MA

Effective: Fri August 22, 2025, 2:21 AM
Expires: Fri August 22, 2025, 4:00 PM

* WHAT...Large breaking waves of 10 to 15 feet. Flooding of up to one foot deep on vulnerable coastal roads and some debris on roadways around high tide Friday morning and Friday evening. * WHERE...Block Island RI. * WHEN...For the High Surf Advisory, until 8 PM EDT Saturday. For the first Coastal Flood Advisory, from 6 AM to 10 AM EDT this morning. For the second Coastal Flood Advisory, from 6 PM to 10 PM EDT this evening. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Dangerous swimming and surfing conditions and localized beach erosion.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Inexperienced swimmers should remain out of the water due to dangerous surf conditions.
Friday, August 22, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 70.3°F
Average Humidity: 61%
Chance of Rain: 0%
Wind: 16.6 mph
UV Index: 2.1

Air Quality

AQI: 1 - Good
PM2.5: 9.44 μg/m3
PM10: 10.75 μg/m3
Carbon Monoxide: 320.57 μg/m3
Nitrogen Dioxide: 10.97 μg/m3
Sulphur Dioxide: 1.9 μg/m3
Ozone: 101.4 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 12:51 AM
Sunset: 7:37 PM
Daylight: 13 hrs 32 mins
Moonrise: 5:09 AM
Moon Transit: 12:27 AM
Moonset: 7:32 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

2:01 AM - 4:31 AM
11:57 AM - 2:27 PM

Minor Periods

7:02 PM - 8:32 PM
4:39 AM - 6:09 AM

Action Rating: 4 out of 5

Saturday, August 23, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 73.8°F
Average Humidity: 73%
Chance of Rain: 0%
Wind: 15.9 mph
UV Index: 2

Air Quality

AQI: 2 - Moderate
PM2.5: 21.67 μg/m3
PM10: 23 μg/m3
Carbon Monoxide: 444.22 μg/m3
Nitrogen Dioxide: 26.78 μg/m3
Sulphur Dioxide: 4.7 μg/m3
Ozone: 121.4 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 12:50 AM
Sunset: 7:35 PM
Daylight: 13 hrs 29 mins
Moonrise: 6:20 AM
Moon Transit: 1:13 PM
Moonset: 7:55 PM
Moon Phase: New
Moon Illumination: 1.4%

Best Times for Fishing or Hunting

Major Periods

2:48 AM - 5:18 AM
12:43 AM - 3:13 PM

Minor Periods

7:25 PM - 8:55 PM
5:50 AM - 7:20 AM

Action Rating: 5 out of 5

Sunday, August 24, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 72.4°F
Average Humidity: 81%
Chance of Rain: 0%
Wind: 13.2 mph
UV Index: 2

Air Quality

AQI: 2 - Moderate
PM2.5: 16.06 μg/m3
PM10: 22.36 μg/m3
Carbon Monoxide: 287.71 μg/m3
Nitrogen Dioxide: 6.21 μg/m3
Sulphur Dioxide: 1.32 μg/m3
Ozone: 96.6 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 12:50 AM
Sunset: 7:33 PM
Daylight: 13 hrs 26 mins
Moonrise: 7:26 AM
Moon Transit: 1:56 PM
Moonset: 8:15 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

3:32 AM - 6:02 AM
1:26 PM - 3:56 PM

Minor Periods

7:45 PM - 9:15 PM
6:56 AM - 8:26 AM

Action Rating: 5 out of 5

Monday, August 25, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 71.5°F
Average Humidity: 91%
Chance of Rain: 88%
Wind: 12.5 mph
UV Index: 1.9

Air Quality

AQI: 2 - Moderate
PM2.5: 18.03 μg/m3
PM10: 26.37 μg/m3
Carbon Monoxide: 255.52 μg/m3
Nitrogen Dioxide: 6.72 μg/m3
Sulphur Dioxide: 1.03 μg/m3
Ozone: 81.52 μg/m3

Astronomical

Sunrise: 6:08 AM
Sun Transit: 12:50 AM
Sunset: 7:32 PM
Daylight: 13 hrs 24 mins
Moonrise: 8:31 AM
Moon Transit: 2:37 PM
Moonset: 8:34 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

4:14 AM - 6:44 AM
2:07 PM - 4:37 PM

Minor Periods

8:04 PM - 9:34 PM
8:01 AM - 9:31 AM

Action Rating: 3 out of 5

Tuesday, August 26, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 67.1°F
Average Humidity: 61%
Chance of Rain: 0%
Wind: 10.3 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 14.19 μg/m3
PM10: 16.66 μg/m3
Carbon Monoxide: 360.18 μg/m3
Nitrogen Dioxide: 13.73 μg/m3
Sulphur Dioxide: 2.52 μg/m3
Ozone: 77.85 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 12:50 AM
Sunset: 7:30 PM
Daylight: 13 hrs 21 mins
Moonrise: 9:33 AM
Moon Transit: 3:18 PM
Moonset: 8:54 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.1%

Best Times for Fishing or Hunting

Major Periods

4:55 AM - 7:25 AM
2:48 PM - 5:18 PM

Minor Periods

8:24 PM - 9:54 PM
9:03 AM - 10:33 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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