Water Temperature of the Mystic River in Mystic, CT

Current Water Temperature

49.3°F

Measurement Time: Monday, April 10, 2023, 5:24 AM EDT

Temperature Locations

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Local Points of Interest

Mystic Seaport

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Mystic River

Station Name: MYSTIC RIVER AT MYSTIC SEAPORT NEAR MYSTIC, CT
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet / 0 meters

Nearest Address:
93 Pearl St
Mystic, CT 06355
New London County

GPS Coordinates: 41.3614722, -71.96727778

Nearby Water Temperatures

Mystic Harbor, Mystic, CT (1.0 mi)
Mystic River, Old Mystic, CT (1.1 mi)
Mystic River, Noank, CT (2.5 mi)
Thames River, Groton, CT (6.0 mi)
Thames River, New London, CT (6.7 mi)
Pawcatuck River, Westerly, RI (7.1 mi)
Yantic River, Norwich, CT (15.8 mi)
East Branch Eightmile River, Lyme, CT (19.6 mi)
Eightmile River, East Haddam, CT (19.7 mi)
Connecticut River, Old Lyme, CT (19.9 mi)
Fort Pond Bay, Montauk, NY (21.6 mi)
Orient Harbor, Orient, NY (23.5 mi)
Natchaug River, Chaplin, CT (32.2 mi)
Wilbur Hollow Brook, Clayville, RI (32.7 mi)
Hemlock Brook, Foster, RI (32.7 mi)

Weather for Mystic, Connecticut

Current Weather

79°F
Partly Cloudy
Conditions: Partly Cloudy
Humidity: 60%
Feels Like: 82.9°F
Wind: SSW 9.8 mph
Wind Gusts: 12.6 mph
Pressure: 30.21 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 5.6

Five Day Weather Forecast

Partly Cloudy
Sun
H: 78°F
L: 61°F
Cloudy
Mon
H: 82°F
L: 66°F
Partly Cloudy
Tue
H: 76°F
L: 67°F
Patchy rain nearby
Wed
H: 83°F
L: 71°F
Patchy rain nearby
Thu
H: 75°F
L: 70°F

Air Quality

AQI: 1 - Good
PM2.5: 11.47 μg/m3
PM10: 15.54 μg/m3
Carbon Monoxide: 294.15 μg/m3
Nitrogen Dioxide: 14.8 μg/m3
Sulphur Dioxide: 0.74 μg/m3
Ozone: 79 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 12:53 AM
Sunset: 7:53 PM
Daylight: 14 hrs 1 mins
Moonrise: 8:48 PM
Moon Transit: 1:40 AM
Moonset: 7:07 AM
Moon Phase: Full
Moon Illumination: 95.5%

Best Times for Fishing or Hunting

Major Periods

1:10 AM - 3:40 AM
4:03 PM - 6:33 PM

Minor Periods

8:18 PM - 9:48 PM
6:37 AM - 8:07 AM

Action Rating: 4 out of 5

Sunday, August 10, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 69.2°F
Average Humidity: 88%
Chance of Rain: 0%
Wind: 12.5 mph
UV Index: 2.1

Air Quality

AQI: 1 - Good
PM2.5: 10.23 μg/m3
PM10: 13.87 μg/m3
Carbon Monoxide: 328.19 μg/m3
Nitrogen Dioxide: 13.42 μg/m3
Sulphur Dioxide: 1.75 μg/m3
Ozone: 73.76 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 12:53 AM
Sunset: 7:53 PM
Daylight: 14 hrs 1 mins
Moonrise: 8:48 PM
Moon Transit: 1:40 AM
Moonset: 7:07 AM
Moon Phase: Full
Moon Illumination: 95.5%

Best Times for Fishing or Hunting

Major Periods

1:10 AM - 3:40 AM
4:03 PM - 6:33 PM

Minor Periods

8:18 PM - 9:48 PM
6:37 AM - 8:07 AM

Action Rating: 4 out of 5

Monday, August 11, 2025

Weather Forecast

Conditions: Cloudy
Average Temperature: 72.2°F
Average Humidity: 87%
Chance of Rain: 0%
Wind: 11.6 mph
UV Index: 2.1

Air Quality

AQI: 2 - Moderate
PM2.5: 19.72 μg/m3
PM10: 23.58 μg/m3
Carbon Monoxide: 293.48 μg/m3
Nitrogen Dioxide: 16.55 μg/m3
Sulphur Dioxide: 2.83 μg/m3
Ozone: 95.4 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 12:53 AM
Sunset: 7:52 PM
Daylight: 13 hrs 59 mins
Moonrise: 9:10 PM
Moon Transit: 2:28 AM
Moonset: 8:20 AM
Moon Phase: Waning Gibbous
Moon Illumination: 89.6%

Best Times for Fishing or Hunting

Major Periods

1:58 AM - 4:28 AM
12:00 AM - 12:00 AM

Minor Periods

8:40 PM - 10:10 PM
7:50 AM - 9:20 AM

Action Rating: 2 out of 5

Tuesday, August 12, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 70.8°F
Average Humidity: 89%
Chance of Rain: 0%
Wind: 12.5 mph
UV Index: 2.1

Air Quality

AQI: 2 - Moderate
PM2.5: 23.42 μg/m3
PM10: 27.39 μg/m3
Carbon Monoxide: 287.12 μg/m3
Nitrogen Dioxide: 16.81 μg/m3
Sulphur Dioxide: 3.31 μg/m3
Ozone: 97.92 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 12:52 AM
Sunset: 7:51 PM
Daylight: 13 hrs 56 mins
Moonrise: 9:33 PM
Moon Transit: 7:21 AM
Moonset: 9:33 AM
Moon Phase: Waning Gibbous
Moon Illumination: 81.8%

Best Times for Fishing or Hunting

Major Periods

6:51 AM - 9:21 AM
6:51 AM - 9:21 AM

Minor Periods

9:03 PM - 10:33 PM
9:03 AM - 10:33 AM

Action Rating: 2 out of 5

Wednesday, August 13, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 74°F
Average Humidity: 90%
Chance of Rain: 86%
Wind: 15.2 mph
UV Index: 2

Air Quality

AQI: 2 - Moderate
PM2.5: 19.65 μg/m3
PM10: 23.47 μg/m3
Carbon Monoxide: 283.79 μg/m3
Nitrogen Dioxide: 15.7 μg/m3
Sulphur Dioxide: 3.35 μg/m3
Ozone: 86.52 μg/m3

Astronomical

Sunrise: 5:55 AM
Sun Transit: 12:52 AM
Sunset: 7:49 PM
Daylight: 13 hrs 54 mins
Moonrise: 9:57 PM
Moon Transit: 4:03 AM
Moonset: 10:47 AM
Moon Phase: Waning Gibbous
Moon Illumination: 72.3%

Best Times for Fishing or Hunting

Major Periods

3:33 AM - 6:03 AM
6:26 PM - 8:56 PM

Minor Periods

9:27 PM - 10:57 PM
10:17 AM - 11:47 AM

Action Rating: 3 out of 5

Thursday, August 14, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 72°F
Average Humidity: 92%
Chance of Rain: 86%
Wind: 10.5 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 11.64 μg/m3
PM10: 16.28 μg/m3
Carbon Monoxide: 236.94 μg/m3
Nitrogen Dioxide: 7.13 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 63.62 μg/m3

Astronomical

Sunrise: 5:56 AM
Sun Transit: 12:52 AM
Sunset: 7:48 PM
Daylight: 13 hrs 52 mins
Moonrise: 10:24 PM
Moon Transit: 4:52 AM
Moonset: 12:03 AM
Moon Phase: Waning Gibbous
Moon Illumination: 61.6%

Best Times for Fishing or Hunting

Major Periods

4:22 AM - 6:52 AM
7:17 PM - 9:47 PM

Minor Periods

9:54 PM - 11:24 PM
11:33 AM - 1:03 PM

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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