Water Temperature of Mystic Harbor in Mystic, CT

Current Water Temperature

47.5°F

Measurement Time: Wednesday, April 5, 2023, 8:00 AM EDT

Temperature Locations

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Local Points of Interest

Mason Island

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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 / 0 meters

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

GPS Coordinates: 41.3464722, -71.9688611

Nearby Water Temperatures

Mystic River, Mystic, CT (1.0 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 (20.0 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

66.9°F
Sunny
Conditions: Sunny
Humidity: 57%
Feels Like: 66.9°F
Wind: SW 11.4 mph
Wind Gusts: 17.9 mph
Pressure: 30.24 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0.1

Five Day Weather Forecast

Sunny
Fri
H: 71°F
L: 42°F
Sunny
Sat
H: 79°F
L: 58°F
Partly Cloudy
Sun
H: 71°F
L: 62°F
Fog
Mon
H: 73°F
L: 63°F
Sunny
Tue
H: 72°F
L: 63°F

Air Quality

AQI: 1 - Good
PM2.5: 7.65 μg/m3
PM10: 8.75 μg/m3
Carbon Monoxide: 184.85 μg/m3
Nitrogen Dioxide: 9.95 μg/m3
Sulphur Dioxide: 4.95 μg/m3
Ozone: 93 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 12:36 AM
Sunset: 6:26 PM
Daylight: 11 hrs 39 mins
Moonrise: 4:49 PM
Moon Transit: 10:06 PM
Moonset: 2:22 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 87.6%

Best Times for Fishing or Hunting

Major Periods

11:41 AM - 2:11 PM
12:00 AM - 12:00 AM

Minor Periods

4:19 PM - 5:49 PM
1:52 AM - 3:22 AM

Action Rating: 2 out of 5

Friday, October 3, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 58°F
Average Humidity: 73%
Chance of Rain: 0%
Wind: 12.3 mph
UV Index: 1.2

Air Quality

AQI: 1 - Good
PM2.5: 6.2 μg/m3
PM10: 7.84 μg/m3
Carbon Monoxide: 187.57 μg/m3
Nitrogen Dioxide: 6.72 μg/m3
Sulphur Dioxide: 3.3 μg/m3
Ozone: 85.32 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 12:36 AM
Sunset: 6:26 PM
Daylight: 11 hrs 39 mins
Moonrise: 4:49 PM
Moon Transit: 10:06 PM
Moonset: 2:22 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 87.6%

Best Times for Fishing or Hunting

Major Periods

11:41 AM - 2:11 PM
12:00 AM - 12:00 AM

Minor Periods

4:19 PM - 5:49 PM
1:52 AM - 3:22 AM

Action Rating: 2 out of 5

Saturday, October 4, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 67.3°F
Average Humidity: 75%
Chance of Rain: 0%
Wind: 11 mph
UV Index: 1.1

Air Quality

AQI: 1 - Good
PM2.5: 10.9 μg/m3
PM10: 11.49 μg/m3
Carbon Monoxide: 218.93 μg/m3
Nitrogen Dioxide: 14.4 μg/m3
Sulphur Dioxide: 5.93 μg/m3
Ozone: 91.36 μg/m3

Astronomical

Sunrise: 6:48 AM
Sun Transit: 12:36 AM
Sunset: 6:24 PM
Daylight: 11 hrs 36 mins
Moonrise: 5:13 PM
Moon Transit: 10:54 PM
Moonset: 3:34 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 94.0%

Best Times for Fishing or Hunting

Major Periods

12:30 AM - 3:00 PM
12:00 AM - 12:00 AM

Minor Periods

4:43 PM - 6:13 PM
3:04 AM - 4:34 AM

Action Rating: 3 out of 5

Sunday, October 5, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 65.8°F
Average Humidity: 88%
Chance of Rain: 0%
Wind: 7.4 mph
UV Index: 1.1

Air Quality

AQI: 2 - Moderate
PM2.5: 19.53 μg/m3
PM10: 20.31 μg/m3
Carbon Monoxide: 295.17 μg/m3
Nitrogen Dioxide: 22.97 μg/m3
Sulphur Dioxide: 5.23 μg/m3
Ozone: 90.64 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 12:36 AM
Sunset: 6:23 PM
Daylight: 11 hrs 33 mins
Moonrise: 5:36 PM
Moon Transit: 12:00 AM
Moonset: 4:49 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:18 PM - 3:48 PM

Minor Periods

5:06 PM - 6:36 PM
4:19 AM - 5:49 AM

Action Rating: 3 out of 5

Monday, October 6, 2025

Weather Forecast

Conditions: Fog
Average Temperature: 64.8°F
Average Humidity: 90%
Chance of Rain: 0%
Wind: 12.3 mph
UV Index: 1.1

Air Quality

AQI: 1 - Good
PM2.5: 11.31 μg/m3
PM10: 13.07 μg/m3
Carbon Monoxide: 170.33 μg/m3
Nitrogen Dioxide: 10.25 μg/m3
Sulphur Dioxide: 4.33 μg/m3
Ozone: 105.68 μg/m3

Astronomical

Sunrise: 6:50 AM
Sun Transit: 12:35 AM
Sunset: 6:21 PM
Daylight: 11 hrs 31 mins
Moonrise: 6:00 PM
Moon Transit: 1:38 AM
Moonset: 6:04 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

1:08 AM - 3:38 AM
1:08 AM - 3:38 AM

Minor Periods

5:30 PM - 7:00 PM
5:34 AM - 7:04 AM

Action Rating: 4 out of 5

Tuesday, October 7, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 66.8°F
Average Humidity: 81%
Chance of Rain: 0%
Wind: 16.6 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 8.29 μg/m3
PM10: 10.3 μg/m3
Carbon Monoxide: 162.23 μg/m3
Nitrogen Dioxide: 9.5 μg/m3
Sulphur Dioxide: 3.87 μg/m3
Ozone: 89.08 μg/m3

Astronomical

Sunrise: 6:51 AM
Sun Transit: 12:35 AM
Sunset: 6:19 PM
Daylight: 11 hrs 28 mins
Moonrise: 6:26 PM
Moon Transit: 12:33 AM
Moonset: 7:22 AM
Moon Phase: Full
Moon Illumination: 99.1%

Best Times for Fishing or Hunting

Major Periods

12:03 AM - 2:33 AM
2:59 PM - 5:29 PM

Minor Periods

5:56 PM - 7:26 PM
6:52 AM - 8:22 AM

Action Rating: 5 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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