Water Temperature of Mystic Harbor in Mystic, CT

Current Water Temperature

47.3°F

Measurement Time: Wednesday, April 5, 2023, 7:54 AM EDT

Temperature Locations

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Local Points of Interest

Mason Island

Mystic Harbor

Station Name: MYSTIC HARBOR AT SAFE HARBOR MARINA NR MYSTIC, CT
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

Nearest Address:
99 Roseleah Dr
Mystic, CT 06355
New London County

GPS Coordinates: 41.3464722, -71.9688611

Nearby Water Temperatures

Mystic River, Mystic, CT (1 mi)
Mystic River, Noank, CT (1.5 mi)
Mystic River, Old Mystic, CT (2.2 mi)
Thames River, Groton, CT (5.9 mi)
Thames River, New London, CT (6.8 mi)
Pawcatuck River, Westerly, RI (7.5 mi)
Yantic River, Norwich, CT (16.7 mi)
Connecticut River, Old Lyme, CT (19.7 mi)
East Branch Eightmile River, Lyme, CT (19.8 mi)
Eightmile River, East Haddam, CT (20 mi)
Fort Pond Bay, Montauk, NY (20.6 mi)
Orient Harbor, Orient, NY (22.8 mi)
Connecticut River, Middletown, CT (33.1 mi)
Natchaug River, Chaplin, CT (33.2 mi)
Great Harbor, North Kingstown, RI (33.4 mi)

Weather for Mystic, Connecticut

Current Weather

73.9°F
Sunny
Sunny
77.1°F
78.3°F
57%
NW 13.6 mph
16.4 mph
75.7°F
61.5°F
0 in
25%
9 mi
1007 mbar
6.2

Five Day Weather Forecast

Sunny
Sun
H: 83°F
L: 66°F
Sunny
Mon
H: 76°F
L: 59°F
Sunny
Tue
H: 75°F
L: 65°F
Sunny
Wed
H: 78°F
L: 65°F
Sunny
Thu
H: 75°F
L: 56°F

Air Quality

AQI: 1 - Good
PM2.5: 5.6 μg/m3
PM10: 5.6 μg/m3
Carbon Monoxide: 129 μg/m3
Nitrogen Dioxide: 1.2 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 103 μg/m3

Astronomical

Sunrise: 5:31 AM
Sun Transit: 12:54 AM
Sunset: 8:17 PM
Daylight: 14 hrs 46 mins
Moonrise: 11:33 AM
Moon Transit: 5:24 PM
Moonset: 11:06 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

7:01 AM - 9:31 AM
4:54 PM - 7:24 PM

Minor Periods

12:00 AM - 12:00 AM
11:03 AM - 12:33 AM

Action Rating: 2 out of 5

Small Craft Advisory issued July 19 at 2:22AM EDT until July 19 at 12:00PM EDT by NWS Upton NY

Effective: Sun July 19, 2026, 2:22 AM
Expires: Sun July 19, 2026, 12:00 PM

* WHAT...West winds 10 to 20 kt with gusts up to 25 kt and seas around 5 feet. * WHERE...Fire Island Inlet NY to Montauk Point NY out 20 nm. * WHEN...Until noon EDT today. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.


Small Craft Advisory issued July 19 at 4:28AM EDT until July 19 at 12:00PM EDT by NWS Upton NY

Effective: Sun July 19, 2026, 4:28 AM
Expires: Sun July 19, 2026, 12:00 PM

* WHAT...Northwest winds 10 to 20 kt with gusts up to 25 kt and seas 4 to 5 feet. * WHERE...Fire Island Inlet NY to Montauk Point NY out 20 nm. * WHEN...Until noon EDT today. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Sunday, July 19, 2026

Weather Forecast

Sunny
82.8°F
65.7°F
73.8°F
70%
0.1 in
57%
0%
17.4 mph
7.9


Air Quality

AQI: 1 - Good
PM2.5: 6.77 μg/m3
PM10: 6.94 μg/m3
Carbon Monoxide: 183.75 μg/m3
Nitrogen Dioxide: 3.59 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 94.83 μg/m3

Astronomical

Sunrise: 5:31 AM
Sun Transit: 12:54 AM
Sunset: 8:17 PM
Daylight: 14 hrs 46 mins
Moonrise: 11:33 AM
Moon Transit: 5:24 PM
Moonset: 11:06 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

7:01 AM - 9:31 AM
4:54 PM - 7:24 PM

Minor Periods

12:00 AM - 12:00 AM
11:03 AM - 12:33 AM

Action Rating: 2 out of 5

Monday, July 20, 2026

Weather Forecast

Sunny
76.4°F
59°F
67.9°F
58%
0 in
3%
0%
11.4 mph
8.3


Air Quality

AQI: 1 - Good
PM2.5: 6.51 μg/m3
PM10: 7.55 μg/m3
Carbon Monoxide: 118.29 μg/m3
Nitrogen Dioxide: 5.73 μg/m3
Sulphur Dioxide: 0.39 μg/m3
Ozone: 83.75 μg/m3

Astronomical

Sunrise: 5:32 AM
Sun Transit: 12:54 AM
Sunset: 8:16 PM
Daylight: 14 hrs 45 mins
Moonrise: 12:39 AM
Moon Transit: 6:08 PM
Moonset: 12:06 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

7:44 AM - 10:14 AM
5:38 PM - 8:08 PM

Minor Periods

12:09 AM - 1:39 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, July 21, 2026

Weather Forecast

Sunny
75.2°F
64.9°F
70.3°F
86%
0.51 in
82%
0%
15 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 10.46 μg/m3
PM10: 15.14 μg/m3
Carbon Monoxide: 132.04 μg/m3
Nitrogen Dioxide: 2.81 μg/m3
Sulphur Dioxide: 0.44 μg/m3
Ozone: 91.63 μg/m3

Astronomical

Sunrise: 5:33 AM
Sun Transit: 12:54 AM
Sunset: 8:16 PM
Daylight: 14 hrs 43 mins
Moonrise: 1:44 PM
Moon Transit: 6:52 PM
Moonset: 12:28 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

8:28 AM - 10:58 AM
6:22 PM - 8:52 PM

Minor Periods

1:14 PM - 2:44 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, July 22, 2026

Weather Forecast

Sunny
78.3°F
64.6°F
72.2°F
78%
0.07 in
58%
0%
14.8 mph
7.2


Air Quality

AQI: 1 - Good
PM2.5: 6.58 μg/m3
PM10: 8.88 μg/m3
Carbon Monoxide: 126.26 μg/m3
Nitrogen Dioxide: 2.68 μg/m3
Sulphur Dioxide: 0.28 μg/m3
Ozone: 89.42 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
75.1°F
56.3°F
65.8°F
62%
0 in
4%
0%
9.6 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 7.86 μg/m3
PM10: 9.28 μg/m3
Carbon Monoxide: 214.78 μg/m3
Nitrogen Dioxide: 9.73 μg/m3
Sulphur Dioxide: 0.92 μg/m3
Ozone: 82.89 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

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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