Water Temperature of the Mystic River in Mystic, CT

Current Water Temperature

49.3°F

Measurement Time: Monday, April 10, 2023, 5:18 AM 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

69.1°F
Overcast
Overcast
69.1°F
68.2°F
87%
NNE 16.6 mph
22.5 mph
68.2°F
64.4°F
0.01 in
100%
9 mi
1015 mbar
1.1

Five Day Weather Forecast

Patchy rain nearby
Tue
H: 70°F
L: 62°F
Sunny
Wed
H: 74°F
L: 58°F
Partly Cloudy
Thu
H: 77°F
L: 66°F
Sunny
Fri
H: 80°F
L: 68°F
Sunny
Sat
H: 79°F
L: 64°F

Air Quality

AQI: 1 - Good
PM2.5: 1.8 μg/m3
PM10: 2.1 μg/m3
Carbon Monoxide: 119 μg/m3
Nitrogen Dioxide: 1.8 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 92 μg/m3

Astronomical

Sunrise: 5:22 AM
Sun Transit: 12:52 AM
Sunset: 8:24 PM
Daylight: 15 hrs 2 mins
Moonrise: 12:49 AM
Moon Transit: 6:19 AM
Moonset: 1:03 PM
Moon Phase: Last Quarter
Moon Illumination: 37.3%

Best Times for Fishing or Hunting

Major Periods

5:49 AM - 8:19 AM
8:41 PM - 11:11 PM

Minor Periods

12:33 AM - 2:03 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Small Craft Advisory issued July 7 at 1:54AM EDT until July 7 at 8:00PM EDT by NWS Boston/Norton MA

Effective: Tue July 7, 2026, 1:54 AM
Expires: Tue July 7, 2026, 3:00 PM

* WHAT...East winds 15 to 20 kt with gusts up to 25 kt and seas 4 to 5 feet. * WHERE...Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Tuesday, July 7, 2026

Weather Forecast

Patchy rain nearby
70.3°F
62.4°F
66.6°F
87%
0.03 in
63%
0%
17.2 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 3.01 μg/m3
PM10: 4.13 μg/m3
Carbon Monoxide: 132.25 μg/m3
Nitrogen Dioxide: 2.73 μg/m3
Sulphur Dioxide: 0.29 μg/m3
Ozone: 85.54 μg/m3

Astronomical

Sunrise: 5:22 AM
Sun Transit: 12:52 AM
Sunset: 8:24 PM
Daylight: 15 hrs 2 mins
Moonrise: 12:49 AM
Moon Transit: 6:19 AM
Moonset: 1:03 PM
Moon Phase: Last Quarter
Moon Illumination: 37.3%

Best Times for Fishing or Hunting

Major Periods

5:49 AM - 8:19 AM
8:41 PM - 11:11 PM

Minor Periods

12:33 AM - 2:03 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Wednesday, July 8, 2026

Weather Forecast

Sunny
74.1°F
58.3°F
67.2°F
79%
0 in
9%
0%
14.1 mph
8.3


Air Quality

AQI: 1 - Good
PM2.5: 5.36 μg/m3
PM10: 6.28 μg/m3
Carbon Monoxide: 150.71 μg/m3
Nitrogen Dioxide: 5.39 μg/m3
Sulphur Dioxide: 0.54 μg/m3
Ozone: 87.63 μg/m3

Astronomical

Sunrise: 5:22 AM
Sun Transit: 12:53 AM
Sunset: 8:24 PM
Daylight: 15 hrs 1 mins
Moonrise: 12:12 AM
Moon Transit: 7:06 AM
Moonset: 2:16 PM
Moon Phase: Last Quarter
Moon Illumination: 26.8%

Best Times for Fishing or Hunting

Major Periods

6:36 AM - 9:06 AM
12:00 AM - 12:00 AM

Minor Periods

1:46 PM - 3:16 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, July 9, 2026

Weather Forecast

Partly Cloudy
77°F
65.5°F
71.3°F
86%
0.07 in
63%
0%
14.5 mph
7.6


Air Quality

AQI: 1 - Good
PM2.5: 7.94 μg/m3
PM10: 10 μg/m3
Carbon Monoxide: 140 μg/m3
Nitrogen Dioxide: 5.55 μg/m3
Sulphur Dioxide: 0.97 μg/m3
Ozone: 86.67 μg/m3

Astronomical

Sunrise: 5:23 AM
Sun Transit: 12:53 AM
Sunset: 8:23 PM
Daylight: 15 hrs mins
Moonrise: 12:39 AM
Moon Transit: 7:58 AM
Moonset: 3:31 PM
Moon Phase: Last Quarter
Moon Illumination: 17.4%

Best Times for Fishing or Hunting

Major Periods

7:28 AM - 9:58 AM
12:00 AM - 12:00 AM

Minor Periods

3:01 PM - 4:31 PM
12:09 AM - 1:39 AM

Action Rating: 2 out of 5

Friday, July 10, 2026

Weather Forecast

Sunny
80.4°F
67.7°F
73.6°F
82%
0.05 in
60%
0%
10.5 mph
6.3


Air Quality

AQI: 1 - Good
PM2.5: 9.81 μg/m3
PM10: 11.2 μg/m3
Carbon Monoxide: 163.41 μg/m3
Nitrogen Dioxide: 6.56 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 114.79 μg/m3

Astronomical

Sunrise: 5:24 AM
Sun Transit: 12:53 AM
Sunset: 8:23 PM
Daylight: 14 hrs 59 mins
Moonrise: 1:12 AM
Moon Transit: 8:55 AM
Moonset: 4:50 PM
Moon Phase: Waning Crescent
Moon Illumination: 9.7%

Best Times for Fishing or Hunting

Major Periods

8:25 AM - 10:55 AM
12:00 AM - 12:00 AM

Minor Periods

4:20 PM - 5:50 PM
12:42 AM - 2:12 AM

Action Rating: 2 out of 5

Saturday, July 11, 2026

Weather Forecast

Sunny
78.8°F
64.1°F
71°F
68%
0 in
6%
0%
11 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 8.22 μg/m3
PM10: 8.36 μg/m3
Carbon Monoxide: 253.56 μg/m3
Nitrogen Dioxide: 8.17 μg/m3
Sulphur Dioxide: 0.68 μg/m3
Ozone: 67.44 μg/m3

Astronomical

Sunrise: 5:24 AM
Sun Transit: 12:53 AM
Sunset: 8:22 PM
Daylight: 14 hrs 58 mins
Moonrise: 1:56 AM
Moon Transit: 9:57 AM
Moonset: 6:07 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:27 AM - 11:57 AM

Minor Periods

5:37 PM - 7:07 PM
1:26 AM - 2:56 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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