Water Temperature of the Mystic River in Mystic, CT

Current Water Temperature

32.0°F

Measurement Time: Wednesday, July 22, 2026, 1:01 PM EDT

Temperature Locations

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Local Points of Interest

Mystic Seaport

Mystic River

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

Elevation Above Sea Level: 0 feet

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 mi)
Mystic River, Old Mystic, CT (1.1 mi)
Mystic River, Noank, CT (2.5 mi)
Thames River, Groton, CT (6 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

78.1°F
Sunny
Sunny
83.4°F
88.7°F
76%
SW 12.5 mph
21.4 mph
80.8°F
76.7°F
0 in
0%
9 mi
1008 mbar
2

Five Day Weather Forecast

Sunny
Wed
H: 85°F
L: 71°F
Sunny
Thu
H: 75°F
L: 61°F
Sunny
Fri
H: 76°F
L: 60°F
Sunny
Sat
H: 75°F
L: 60°F
Sunny
Sun
H: 73°F
L: 58°F

Air Quality

AQI: 1 - Good
PM2.5: 12.9 μg/m3
PM10: 15.9 μg/m3
Carbon Monoxide: 176 μg/m3
Nitrogen Dioxide: 4.7 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 176 μg/m3

Astronomical

Sunrise: 5:33 AM
Sun Transit: 12:54 AM
Sunset: 8:15 PM
Daylight: 14 hrs 41 mins
Moonrise: 2:49 PM
Moon Transit: 7:37 PM
Moonset: 12:52 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

9:13 AM - 11:43 AM
7:07 PM - 9:37 PM

Minor Periods

2:19 PM - 3:49 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, July 22, 2026

Weather Forecast

Sunny
84.7°F
71.4°F
75.2°F
87%
0 in
20%
0%
16.3 mph
7.3


Air Quality

AQI: 1 - Good
PM2.5: 8.08 μg/m3
PM10: 9.82 μg/m3
Carbon Monoxide: 155.33 μg/m3
Nitrogen Dioxide: 5.38 μg/m3
Sulphur Dioxide: 0.62 μg/m3
Ozone: 117.17 μg/m3

Astronomical

Sunrise: 5:33 AM
Sun Transit: 12:54 AM
Sunset: 8:15 PM
Daylight: 14 hrs 41 mins
Moonrise: 2:49 PM
Moon Transit: 7:37 PM
Moonset: 12:52 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

9:13 AM - 11:43 AM
7:07 PM - 9:37 PM

Minor Periods

2:19 PM - 3:49 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, July 23, 2026

Weather Forecast

Sunny
75°F
61°F
67.7°F
61%
0 in
4%
0%
9.2 mph
8.5


Air Quality

AQI: 1 - Good
PM2.5: 4.53 μg/m3
PM10: 4.68 μg/m3
Carbon Monoxide: 133.29 μg/m3
Nitrogen Dioxide: 6.34 μg/m3
Sulphur Dioxide: 0.43 μg/m3
Ozone: 85.46 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 12:54 AM
Sunset: 8:14 PM
Daylight: 14 hrs 40 mins
Moonrise: 3:53 PM
Moon Transit: 8:25 PM
Moonset: 12:20 AM
Moon Phase: First Quarter
Moon Illumination: 66.1%

Best Times for Fishing or Hunting

Major Periods

10:00 AM - 12:30 AM
7:55 PM - 10:25 PM

Minor Periods

3:23 PM - 4:53 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Friday, July 24, 2026

Weather Forecast

Sunny
75.6°F
60.2°F
68°F
68%
0 in
5%
0%
9.2 mph
8.2


Air Quality

AQI: 1 - Good
PM2.5: 10.22 μg/m3
PM10: 12.42 μg/m3
Carbon Monoxide: 144.83 μg/m3
Nitrogen Dioxide: 10.2 μg/m3
Sulphur Dioxide: 0.86 μg/m3
Ozone: 90.17 μg/m3

Astronomical

Sunrise: 5:35 AM
Sun Transit: 12:54 AM
Sunset: 8:13 PM
Daylight: 14 hrs 38 mins
Moonrise: 4:54 PM
Moon Transit: 9:15 PM
Moonset: 12:54 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%

Best Times for Fishing or Hunting

Major Periods

10:49 AM - 1:19 PM
8:45 PM - 11:15 PM

Minor Periods

4:24 PM - 5:54 PM
12:24 AM - 1:54 AM

Action Rating: 2 out of 5

Saturday, July 25, 2026

Weather Forecast

Sunny
75.4°F
59.6°F
67.2°F
64%
0 in
4%
0%
10.7 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 7.59 μg/m3
PM10: 9.57 μg/m3
Carbon Monoxide: 130.64 μg/m3
Nitrogen Dioxide: 5.55 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 91.38 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 12:54 AM
Sunset: 8:12 PM
Daylight: 14 hrs 36 mins
Moonrise: 5:50 PM
Moon Transit: 10:06 PM
Moonset: 1:34 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.2%

Best Times for Fishing or Hunting

Major Periods

11:40 AM - 2:10 PM
12:00 AM - 12:00 AM

Minor Periods

5:20 PM - 6:50 PM
1:04 AM - 2:34 AM

Action Rating: 2 out of 5

Sunday, July 26, 2026

Weather Forecast

Sunny
73.3°F
57.7°F
65.8°F
66%
0 in
5%
0%
8.1 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 7.68 μg/m3
PM10: 9.44 μg/m3
Carbon Monoxide: 140 μg/m3
Nitrogen Dioxide: 7.42 μg/m3
Sulphur Dioxide: 0.64 μg/m3
Ozone: 78.33 μg/m3

Astronomical

Sunrise: 5:37 AM
Sun Transit: 12:54 AM
Sunset: 8:11 PM
Daylight: 14 hrs 34 mins
Moonrise: 6:40 PM
Moon Transit: 10:58 PM
Moonset: 2:23 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

12:31 AM - 3:01 PM
12:00 AM - 12:00 AM

Minor Periods

6:10 PM - 7:40 PM
1:53 AM - 3:23 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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