Water Temperature of New Haven Harbor in New Haven, CT
Current Water Temperature
Measurement Time: Tuesday, July 15, 2025, 3:18 PM EDT
Today's Tides
High: July 15, 2:53 AM, 6.66 ft
Low: July 15, 9:08 AM, 0.07 ft
High: July 15, 3:25 PM, 6.78 ft
Low: July 15, 9:38 PM, 0.50 ft
Temperature Locations
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Local Points of Interest
East Haven, CT; East Shore Park; Long Island SoundSponsored Content
Station Name: New Haven
Data Source: NOAA Tides and Currents
Elevation Above Sea Level: 0 feet / 0 meters
Sensor Depth: -5.8 feet / -1.8 meters
Nearest Address:
1 Waterfront Street
New Haven, CT 06512
New Haven County
GPS Coordinates: 41.283333, -72.908333
Nearby Water Temperatures
Quinnipiac River, Wallingford, CT (12.0 mi)Housatonic River, Stratford, CT (12.9 mi)
Naugatuck River, Beacon Falls, CT (13.6 mi)
Bridgeport Harbor, Bridgeport, CT (16.1 mi)
Rooster River, Bridgeport, CT (17.7 mi)
Mill River, Southport, CT (22.1 mi)
Mill River, Fairfield, CT (22.6 mi)
Flax Pond, Old Field, NY (25.3 mi)
Connecticut River, Middletown, CT (25.6 mi)
Saugatuck River, Westport Village, CT (26.4 mi)
Saugatuck River, Westport, CT (26.8 mi)
Norwalk River, Norwalk, CT (28.7 mi)
Peconic River, Riverhead, NY (28.9 mi)
Norwalk Harbor, Norwalk, CT (29.0 mi)
Norwalk River, Norwalk, CT (29.2 mi)
Weather for New Haven, Connecticut
Current Weather

Humidity: 67%
Feels Like: 92°F
Wind: S 7.4 mph
Wind Gusts: 11.3 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 6.8
Five Day Weather Forecast

Tue
H: 90°F
L: 73°F

Wed
H: 85°F
L: 72°F

Thu
H: 92°F
L: 76°F

Fri
H: 89°F
L: 69°F

Sat
H: 79°F
L: 62°F
Air Quality
Nitrogen Dioxide: 14.99 μg/m3
Sulphur Dioxide: 1.67 μg/m3
Ozone: 107 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 8:23 PM
Daylight: 14 hrs 52 mins
Moon Transit: 4:35 AM
Moonset: 10:36 AM
Moon Phase: Waning Gibbous
Moon Illumination: 66.7%
Best Times for Fishing or Hunting
Major Periods
4:05 AM - 6:35 AM12:00 AM - 12:00 AM
Minor Periods
12:00 AM - 12:00 AM10:06 AM - 11:36 AM
Action Rating: 2 out of 5
Heat Advisory issued July 15 at 2:14PM EDT until July 17 at 10:00PM EDT by NWS Upton NY
Effective: Tue July 15, 2025, 2:14 PM
Expires: Wed July 16, 2025, 5:00 AM
* WHAT...Heat index values up to 102 expected. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...From 11 AM Wednesday to 10 PM EDT Thursday. The highest heat index values will occur during the afternoon each day. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
A Heat Advisory is issued when the combination of heat and humidity is expected to make it feel like it is 95 to 99 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time. Seniors and those with chronic health problems or mental health conditions are at an increased risk. Homes without air conditioning can be much hotter than outdoor temperatures. Use air conditioning to stay cool at home or go to a place that has air conditioning. If you don't have home air conditioning, continue to seek out cool spaces each day as long as it remains hot, and for a few days after if your home is still hot. Check on vulnerable friends, family members and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! In cases of heat stroke call 9 1 1.
Heat Advisory issued July 15 at 2:14PM EDT until July 17 at 10:00PM EDT by NWS Upton NY
Effective: Tue July 15, 2025, 2:14 PM
Expires: Wed July 16, 2025, 5:00 AM
* WHAT...Heat index values up to 102 expected. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...From 11 AM Wednesday to 10 PM EDT Thursday. The highest heat index values will occur during the afternoon each day. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
A Heat Advisory is issued when the combination of heat and humidity is expected to make it feel like it is 95 to 99 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time. Seniors and those with chronic health problems or mental health conditions are at an increased risk. Homes without air conditioning can be much hotter than outdoor temperatures. Use air conditioning to stay cool at home or go to a place that has air conditioning. If you don't have home air conditioning, continue to seek out cool spaces each day as long as it remains hot, and for a few days after if your home is still hot. Check on vulnerable friends, family members and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! In cases of heat stroke call 9 1 1.
Heat Advisory issued July 15 at 2:14PM EDT until July 17 at 10:00PM EDT by NWS Upton NY
Effective: Tue July 15, 2025, 2:14 PM
Expires: Wed July 16, 2025, 5:00 AM
* WHAT...Heat index values up to 102 expected. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...From 11 AM Wednesday to 10 PM EDT Thursday. The highest heat index values will occur during the afternoon each day. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
A Heat Advisory is issued when the combination of heat and humidity is expected to make it feel like it is 95 to 99 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time. Seniors and those with chronic health problems or mental health conditions are at an increased risk. Homes without air conditioning can be much hotter than outdoor temperatures. Use air conditioning to stay cool at home or go to a place that has air conditioning. If you don't have home air conditioning, continue to seek out cool spaces each day as long as it remains hot, and for a few days after if your home is still hot. Check on vulnerable friends, family members and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! In cases of heat stroke call 9 1 1.
Heat Advisory issued July 15 at 2:14PM EDT until July 17 at 10:00PM EDT by NWS Upton NY
Effective: Tue July 15, 2025, 2:14 PM
Expires: Wed July 16, 2025, 5:00 AM
* WHAT...Heat index values up to 102 expected. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...From 11 AM Wednesday to 10 PM EDT Thursday. The highest heat index values will occur during the afternoon each day. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
A Heat Advisory is issued when the combination of heat and humidity is expected to make it feel like it is 95 to 99 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time. Seniors and those with chronic health problems or mental health conditions are at an increased risk. Homes without air conditioning can be much hotter than outdoor temperatures. Use air conditioning to stay cool at home or go to a place that has air conditioning. If you don't have home air conditioning, continue to seek out cool spaces each day as long as it remains hot, and for a few days after if your home is still hot. Check on vulnerable friends, family members and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! In cases of heat stroke call 9 1 1.
Heat Advisory issued July 15 at 1:43PM EDT until July 17 at 7:00PM EDT by NWS Boston/Norton MA
Effective: Tue July 15, 2025, 1:43 PM
Expires: Wed July 16, 2025, 8:00 AM
* WHAT...Heat index values up to 100. * WHERE...Much of Southern New England. * WHEN...Until 7 PM EDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Weather Forecast
Average Temperature: 79°F
Average Humidity: 83%
Wind: 7.4 mph
UV Index: 2.5
Air Quality
Nitrogen Dioxide: 24.52 μg/m3
Sulphur Dioxide: 5.39 μg/m3
Ozone: 74.68 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 8:23 PM
Daylight: 14 hrs 52 mins
Moon Transit: 4:35 AM
Moonset: 10:36 AM
Moon Phase: Waning Gibbous
Moon Illumination: 66.7%
Best Times for Fishing or Hunting
Major Periods
4:05 AM - 6:35 AM12:00 AM - 12:00 AM
Minor Periods
12:00 AM - 12:00 AM10:06 AM - 11:36 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 77.2°F
Average Humidity: 88%
Wind: 10.7 mph
UV Index: 2.3
Air Quality
Nitrogen Dioxide: 20.02 μg/m3
Sulphur Dioxide: 5.18 μg/m3
Ozone: 118.28 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 8:23 PM
Daylight: 14 hrs 50 mins
Moon Transit: 1:15 AM
Moonset: 11:47 AM
Moon Phase: Waning Gibbous
Moon Illumination: 55.7%
Best Times for Fishing or Hunting
Major Periods
12:45 AM - 3:15 AM12:45 AM - 3:15 AM
Minor Periods
11:17 AM - 12:47 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 81.7°F
Average Humidity: 81%
Wind: 10.3 mph
UV Index: 2.2
Air Quality
Nitrogen Dioxide: 17.86 μg/m3
Sulphur Dioxide: 5.28 μg/m3
Ozone: 124.44 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 8:22 PM
Daylight: 14 hrs 49 mins
Moon Transit: 6:09 AM
Moonset: 1:00 PM
Moon Phase: Last Quarter
Moon Illumination: 44.4%
Best Times for Fishing or Hunting
Major Periods
5:39 AM - 8:09 AM8:25 PM - 10:55 PM
Minor Periods
12:30 AM - 2:00 PM12:00 AM - 12:00 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 78.8°F
Average Humidity: 64%
Wind: 11.2 mph
UV Index: 1.8
Air Quality
Nitrogen Dioxide: 16.63 μg/m3
Sulphur Dioxide: 6.31 μg/m3
Ozone: 121.28 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 8:21 PM
Daylight: 14 hrs 47 mins
Moon Transit: 7:00 AM
Moonset: 2:16 PM
Moon Phase: Last Quarter
Moon Illumination: 33.4%
Best Times for Fishing or Hunting
Major Periods
6:30 AM - 9:00 AM9:17 PM - 11:47 PM
Minor Periods
1:46 PM - 3:16 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 70.8°F
Average Humidity: 72%
Wind: 8.7 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 17.8 μg/m3
Sulphur Dioxide: 2.87 μg/m3
Ozone: 75.77 μg/m3
Astronomical
Sun Transit: 12:58 AM
Sunset: 8:21 PM
Daylight: 14 hrs 46 mins
Moon Transit: 7:52 AM
Moonset: 3:34 PM
Moon Phase: Last Quarter
Moon Illumination: 23.2%
Best Times for Fishing or Hunting
Major Periods
7:22 AM - 9:52 AM12:00 AM - 12:00 AM
Minor Periods
3:04 PM - 4:34 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5