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

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

26.8°F
Clear with periodic clouds
Conditions: Clear with periodic clouds
Humidity: 43%
Heat Index: 26.8°F
Feels Like: 14°F
Wind: W 11.8 mph
Wind Gusts: 30 mph
Wind Chill: 14°F
Air Pressure: 998.98 millibars
Dew Point: 14°F
Chance of Precipitation: 0%
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 10 mi
UV Index: 0

Five Day Weather Forecast

Overcast
Tue
H: 27°F
L: 24°F
Cloudy
Wed
H: 36°F
L: 27°F
Partly Cloudy
Thu
H: 32°F
L: 23°F
Partly Cloudy
Fri
H: 29°F
L: 22°F
Partly Cloudy
Sat
H: 30°F
L: 24°F

Air Quality

AQI: 1 - Good
PM2.5: 1.45 μg/m3
PM10: 1.45 μg/m3
Carbon Monoxide: 169.85 μg/m3
Nitrogen Dioxide: 2.95 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 72 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 11:50 AM
Sunset: 4:28 PM
Daylight: 9 hrs 14 mins
Moonrise: 12:46 AM
Moon Transit: 8:24 PM
Moonset: 2:57 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.8%

Best Times for Fishing or Hunting

Major Periods

9:55 AM - 12:25 AM
7:54 PM - 10:24 PM

Minor Periods

12:16 AM - 1:46 PM
2:27 AM - 3:57 AM

Action Rating: 2 out of 5

Wind Advisory issued December 29 at 12:43PM EST until December 30 at 6:00PM EST by NWS Upton NY

Effective: Mon December 29, 2025, 12:43 PM
Expires: Tue December 30, 2025, 3:00 AM

* WHAT...West winds 15 to 25 mph with gusts up to 50 mph expected. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...From 4 PM this afternoon to 6 PM EST Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects.


Wind Advisory issued December 30 at 1:16AM EST until December 30 at 6:00PM EST by NWS Upton NY

Effective: Tue December 30, 2025, 1:16 AM
Expires: Tue December 30, 2025, 2:00 PM

* WHAT...West winds 10 to 20 mph with gusts up to 45 mph. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...Until 6 PM EST this evening. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects.


Wind Advisory issued December 29 at 12:39PM EST until December 31 at 1:00AM EST by NWS Boston/Norton MA

Effective: Mon December 29, 2025, 12:39 PM
Expires: Tue December 30, 2025, 5:00 AM

* WHAT...West winds 10 to 20 mph with gusts up to 50 mph expected. * WHERE...Portions of northern Connecticut, eastern, northeastern, and southeastern Massachusetts, and northern and southern Rhode Island. * WHEN...From 7 PM this evening to 1 AM EST Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and some power outages may result.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.
Tuesday, December 30, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 27°F
Average Humidity: 53%
Chance of Rain: 0%
Wind: 26.8 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 1.63 μg/m3
PM10: 1.65 μg/m3
Carbon Monoxide: 170.65 μg/m3
Nitrogen Dioxide: 3.59 μg/m3
Sulphur Dioxide: 1.84 μg/m3
Ozone: 73.24 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 11:50 AM
Sunset: 4:28 PM
Daylight: 9 hrs 14 mins
Moonrise: 12:46 AM
Moon Transit: 8:24 PM
Moonset: 2:57 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.8%

Best Times for Fishing or Hunting

Major Periods

9:55 AM - 12:25 AM
7:54 PM - 10:24 PM

Minor Periods

12:16 AM - 1:46 PM
2:27 AM - 3:57 AM

Action Rating: 2 out of 5

Wednesday, December 31, 2025

Weather Forecast

Conditions: Cloudy
Average Temperature: 30.3°F
Average Humidity: 67%
Chance of Rain: 0%
Wind: 21.7 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 2.47 μg/m3
PM10: 2.52 μg/m3
Carbon Monoxide: 168.85 μg/m3
Nitrogen Dioxide: 6.06 μg/m3
Sulphur Dioxide: 3.04 μg/m3
Ozone: 76.64 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:51 AM
Sunset: 4:29 PM
Daylight: 9 hrs 15 mins
Moonrise: 1:27 PM
Moon Transit: 9:27 PM
Moonset: 4:17 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.5%

Best Times for Fishing or Hunting

Major Periods

10:55 AM - 1:25 PM
8:57 PM - 11:27 PM

Minor Periods

12:57 AM - 2:27 PM
3:47 AM - 5:17 AM

Action Rating: 2 out of 5

Thursday, January 1, 2026

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 28.6°F
Average Humidity: 53%
Chance of Rain: 0%
Wind: 20.1 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 4.03 μg/m3
PM10: 4.09 μg/m3
Carbon Monoxide: 196.25 μg/m3
Nitrogen Dioxide: 9.02 μg/m3
Sulphur Dioxide: 5.73 μg/m3
Ozone: 63.28 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:51 AM
Sunset: 4:30 PM
Daylight: 9 hrs 16 mins
Moonrise: 2:21 PM
Moon Transit: 10:33 PM
Moonset: 5:36 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 96.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 2:30 PM
12:00 AM - 12:00 AM

Minor Periods

1:51 PM - 3:21 PM
5:06 AM - 6:36 AM

Action Rating: 2 out of 5

Friday, January 2, 2026

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 25.5°F
Average Humidity: 58%
Chance of Rain: 0%
Wind: 14.8 mph
UV Index: 2

Air Quality

AQI: 1 - Good
PM2.5: 3.48 μg/m3
PM10: 3.57 μg/m3
Carbon Monoxide: 204.6 μg/m3
Nitrogen Dioxide: 6.06 μg/m3
Sulphur Dioxide: 2.38 μg/m3
Ozone: 75.32 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:52 AM
Sunset: 4:30 PM
Daylight: 9 hrs 17 mins
Moonrise: 3:28 PM
Moon Transit: 11:40 PM
Moonset: 6:48 AM
Moon Phase: Full
Moon Illumination: 99.2%

Best Times for Fishing or Hunting

Major Periods

1:07 PM - 3:37 PM
12:00 AM - 12:00 AM

Minor Periods

2:58 PM - 4:28 PM
6:18 AM - 7:48 AM

Action Rating: 4 out of 5

Saturday, January 3, 2026

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 27.5°F
Average Humidity: 66%
Chance of Rain: 0%
Wind: 11.9 mph
UV Index: 2

Air Quality

AQI: 1 - Good
PM2.5: 6.9 μg/m3
PM10: 6.97 μg/m3
Carbon Monoxide: 205.18 μg/m3
Nitrogen Dioxide: 12.9 μg/m3
Sulphur Dioxide: 8.13 μg/m3
Ozone: 61.15 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:52 AM
Sunset: 4:31 PM
Daylight: 9 hrs 18 mins
Moonrise: 4:44 PM
Moon Transit: 12:00 AM
Moonset: 7:46 AM
Moon Phase: Full
Moon Illumination: 99.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:13 PM - 4:43 PM

Minor Periods

4:14 PM - 5:44 PM
7:16 AM - 8:46 AM

Action Rating: 6 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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