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

66.9°F
Partly cloudy
Partly cloudy
66.9°F
72.3°F
63%
W 9.6 mph
11.1 mph
71.4°F
48.3°F
0 in
50%
9 mi
1010 mbar
6.8

Five Day Weather Forecast

Sunny
Tue
H: 76°F
L: 57°F
Partly Cloudy
Wed
H: 71°F
L: 59°F
Moderate rain
Thu
H: 74°F
L: 64°F
Sunny
Fri
H: 76°F
L: 64°F
Sunny
Sat
H: 75°F
L: 58°F

Air Quality

AQI: 1 - Good
PM2.5: 3.2 μg/m3
PM10: 3.2 μg/m3
Carbon Monoxide: 113 μg/m3
Nitrogen Dioxide: 2.3 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 74 μg/m3

Astronomical

Sunrise: 5:14 AM
Sun Transit: 12:48 AM
Sunset: 8:24 PM
Daylight: 15 hrs 10 mins
Moonrise: 6:29 AM
Moon Transit: 2:32 PM
Moonset: 10:26 PM
Moon Phase: New
Moon Illumination: 1.0%

Best Times for Fishing or Hunting

Major Periods

4:00 AM - 6:30 AM
2:02 PM - 4:32 PM

Minor Periods

9:56 PM - 11:26 PM
5:59 AM - 7:29 AM

Action Rating: 3 out of 5

Coastal Flood Statement issued June 15 at 3:12PM EDT until June 17 at 2:00AM EDT by NWS Boston/Norton MA

Effective: Mon June 15, 2026, 3:12 PM
Expires: Tue June 16, 2026, 8:00 AM

* WHAT...Up to one half foot of inundation above ground level in low-lying areas near shorelines and tidal waterways (4.3 to 7.0 feet Mean Lower Low Water). * WHERE...Washington, Southern Bristol MA, Southern Plymouth MA, Southeast Providence RI, Eastern Kent RI, Bristol RI, and Newport RI Counties. * WHEN...Through late Tuesday night. The evening high tides tonight and Tuesday night are of the most concern. * IMPACTS...Some water on low lying roads and property.

Do not drive through flooded roadways.


Coastal Flood Statement issued June 16 at 2:10AM EDT until June 17 at 2:00AM EDT by NWS Boston/Norton MA

Effective: Tue June 16, 2026, 2:10 AM
Expires: Tue June 16, 2026, 4:00 PM

* WHAT...Up to one half foot of inundation above ground level in low-lying areas near shorelines and tidal waterways (4.2 to 7.0 feet Mean Lower Low Water). * WHERE...Washington, Southern Bristol MA, Southern Plymouth, Southeast Providence, Eastern Kent, Bristol RI, and Newport Counties. * WHEN...Through late tonight. * IMPACTS...Some water on low lying roads and property.

Do not drive through flooded roadways.
Tuesday, June 16, 2026

Weather Forecast

Sunny
76.3°F
56.5°F
66°F
60%
0 in
3%
0%
15.2 mph
8.3


Air Quality

AQI: 1 - Good
PM2.5: 5.84 μg/m3
PM10: 7.08 μg/m3
Carbon Monoxide: 123.21 μg/m3
Nitrogen Dioxide: 3.85 μg/m3
Sulphur Dioxide: 0.46 μg/m3
Ozone: 76.96 μg/m3

Astronomical

Sunrise: 5:14 AM
Sun Transit: 12:48 AM
Sunset: 8:24 PM
Daylight: 15 hrs 10 mins
Moonrise: 6:29 AM
Moon Transit: 2:32 PM
Moonset: 10:26 PM
Moon Phase: New
Moon Illumination: 1.0%

Best Times for Fishing or Hunting

Major Periods

4:00 AM - 6:30 AM
2:02 PM - 4:32 PM

Minor Periods

9:56 PM - 11:26 PM
5:59 AM - 7:29 AM

Action Rating: 3 out of 5

Wednesday, June 17, 2026

Weather Forecast

Partly Cloudy
71.2°F
59.1°F
65.5°F
75%
0 in
17%
0%
10.5 mph
4.2


Air Quality

AQI: 1 - Good
PM2.5: 10.15 μg/m3
PM10: 14.1 μg/m3
Carbon Monoxide: 121.79 μg/m3
Nitrogen Dioxide: 5.49 μg/m3
Sulphur Dioxide: 0.62 μg/m3
Ozone: 84.21 μg/m3

Astronomical

Sunrise: 5:14 AM
Sun Transit: 12:48 AM
Sunset: 8:24 PM
Daylight: 15 hrs 10 mins
Moonrise: 7:49 AM
Moon Transit: 3:33 PM
Moonset: 11:04 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.6%

Best Times for Fishing or Hunting

Major Periods

5:03 AM - 7:33 AM
3:03 PM - 5:33 PM

Minor Periods

12:00 AM - 12:00 AM
7:19 AM - 8:49 AM

Action Rating: 3 out of 5

Thursday, June 18, 2026

Weather Forecast

Moderate rain
74.1°F
64.3°F
69.4°F
87%
0.22 in
79%
0%
21.3 mph
8.3


Air Quality

AQI: 1 - Good
PM2.5: 10.96 μg/m3
PM10: 15.8 μg/m3
Carbon Monoxide: 118.46 μg/m3
Nitrogen Dioxide: 2.37 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 104.71 μg/m3

Astronomical

Sunrise: 5:14 AM
Sun Transit: 12:49 AM
Sunset: 8:24 PM
Daylight: 15 hrs 10 mins
Moonrise: 9:08 AM
Moon Transit: 4:28 PM
Moonset: 12:04 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.4%

Best Times for Fishing or Hunting

Major Periods

6:01 AM - 8:31 AM
3:58 PM - 6:28 PM

Minor Periods

8:38 AM - 10:08 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Friday, June 19, 2026

Weather Forecast

Sunny
76.4°F
64.1°F
70.5°F
62%
0 in
4%
0%
17 mph
8.6


Air Quality

AQI: 1 - Good
PM2.5: 3.68 μg/m3
PM10: 4.25 μg/m3
Carbon Monoxide: 130.75 μg/m3
Nitrogen Dioxide: 4.62 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 90.71 μg/m3

Astronomical

Sunrise: 5:14 AM
Sun Transit: 12:49 AM
Sunset: 8:25 PM
Daylight: 15 hrs 11 mins
Moonrise: 10:24 AM
Moon Transit: 5:17 PM
Moonset: 12:34 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.3%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

9:54 AM - 11:24 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Saturday, June 20, 2026

Weather Forecast

Sunny
74.6°F
58.3°F
67°F
58%
0 in
4%
0%
20.4 mph
1.6


Air Quality

AQI: 1 - Good
PM2.5: 2.23 μg/m3
PM10: 2.28 μg/m3
Carbon Monoxide: 145.33 μg/m3
Nitrogen Dioxide: 4.42 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 65 μg/m3

Astronomical

Sunrise: 5:14 AM
Sun Transit: 12:49 AM
Sunset: 8:25 PM
Daylight: 15 hrs 11 mins
Moonrise: 11:34 AM
Moon Transit: 6:03 PM
Moonset: 12:59 AM
Moon Phase: Waxing Crescent
Moon Illumination: 27.8%

Best Times for Fishing or Hunting

Major Periods

7:40 AM - 10:10 AM
5:33 PM - 8:03 PM

Minor Periods

11:04 AM - 12:34 AM
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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