Water Temperature of Nantucket Sound in Nantucket, MA

Current Water Temperature

37.4°F

Measurement Time: Thursday, December 18, 2025, 5:24 PM EST

Today's Tides

Low: December 18, 4:08 AM, 0.77 ft
 High: December 18, 10:45 AM, 3.44 ft
Low: December 18, 5:09 PM, 0.16 ft
 High: December 18, 11:42 PM, 2.41 ft

Temperature Locations

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Local Points of Interest

Nantucket Island; Nantucket Terminal; Head of the Harbor; Atlantic Ocean

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Nantucket Sound

Station Name: Nantucket Island
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 0 feet / 0 meters

Sensor Depth: -2.3 feet / -0.7 meters

Nearest Address:
20 Old N Wharf
Nantucket, MA 02554
Nantucket County

GPS Coordinates: 41.285278, -70.096390

Nearby Water Temperatures

Nantucket Sound, West Yarmouth, MA (17.2 mi)
Pleasant Bay, Chatham, MA (28.9 mi)
Childs River, Waquoit Village, MA (30.5 mi)
Woods Hole, Woods Hole, MA (34.0 mi)
Herring River, Wellfleet, MA (44.7 mi)
Atlantic Ocean, New Shoreham, RI (57.9 mi)
Taunton River, Fall River, MA (62.4 mi)
Taunton River, Bridgewater, MA (63.1 mi)
Atlantic Ocean, Provincetown, MA (63.5 mi)
Narragansett Bay, Newport, RI (65.5 mi)
Mill River, Taunton, MA (66.6 mi)
Atlantic Ocean, Nantucket, MA (70.2 mi)
Providence River, Barrington, RI (71.1 mi)
Great Harbor, North Kingstown, RI (71.2 mi)
Providence River, Providence, RI (76.5 mi)

Weather for Nantucket, Massachusetts

Current Weather

39.9°F
Clear
Conditions: Clear
Humidity: 93%
Feels Like: 31.8°F
Wind: SSE 14.8 mph
Wind Gusts: 30.2 mph
Pressure: 30.33 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Thu
H: 46°F
L: 34°F
Heavy rain
Fri
H: 47°F
L: 41°F
Sunny
Sat
H: 34°F
L: 32°F
Partly Cloudy
Sun
H: 45°F
L: 34°F
Sunny
Mon
H: 33°F
L: 29°F

Air Quality

AQI: 1 - Good
PM2.5: 14.85 μg/m3
PM10: 21.75 μg/m3
Carbon Monoxide: 165.85 μg/m3
Nitrogen Dioxide: 2.45 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 79 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 11:37 AM
Sunset: 4:13 PM
Daylight: 9 hrs 12 mins
Moonrise: 6:03 AM
Moon Transit: 10:26 AM
Moonset: 2:46 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:15 AM - 2:45 AM
9:56 AM - 12:26 AM

Minor Periods

2:16 PM - 3:46 PM
5:33 AM - 7:03 AM

Action Rating: 4 out of 5

Thursday, December 18, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 40.6°F
Average Humidity: 84%
Chance of Rain: 0%
Wind: 21.5 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 7.76 μg/m3
PM10: 10.1 μg/m3
Carbon Monoxide: 185.81 μg/m3
Nitrogen Dioxide: 6.47 μg/m3
Sulphur Dioxide: 2.21 μg/m3
Ozone: 63.32 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 11:37 AM
Sunset: 4:13 PM
Daylight: 9 hrs 12 mins
Moonrise: 6:03 AM
Moon Transit: 10:26 AM
Moonset: 2:46 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:15 AM - 2:45 AM
9:56 AM - 12:26 AM

Minor Periods

2:16 PM - 3:46 PM
5:33 AM - 7:03 AM

Action Rating: 4 out of 5

Friday, December 19, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 45.5°F
Average Humidity: 97%
Chance of Rain: 88%
Wind: 49.4 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 11.65 μg/m3
PM10: 17.63 μg/m3
Carbon Monoxide: 141.81 μg/m3
Nitrogen Dioxide: 2.03 μg/m3
Sulphur Dioxide: 1.39 μg/m3
Ozone: 84.32 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 11:37 AM
Sunset: 4:14 PM
Daylight: 9 hrs 12 mins
Moonrise: 7:02 AM
Moon Transit: 11:17 AM
Moonset: 3:33 PM
Moon Phase: New
Moon Illumination: 1.1%

Best Times for Fishing or Hunting

Major Periods

1:06 AM - 3:36 AM
10:47 AM - 1:17 PM

Minor Periods

3:03 PM - 4:33 PM
6:32 AM - 8:02 AM

Action Rating: 4 out of 5

Saturday, December 20, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 34.4°F
Average Humidity: 66%
Chance of Rain: 0%
Wind: 36.7 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 3.09 μg/m3
PM10: 4.09 μg/m3
Carbon Monoxide: 153.33 μg/m3
Nitrogen Dioxide: 4.17 μg/m3
Sulphur Dioxide: 2.25 μg/m3
Ozone: 72.96 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 11:38 AM
Sunset: 4:14 PM
Daylight: 9 hrs 12 mins
Moonrise: 7:53 AM
Moon Transit: 12:10 AM
Moonset: 4:29 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:59 AM - 4:29 AM
11:40 AM - 2:10 PM

Minor Periods

3:59 PM - 5:29 PM
7:23 AM - 8:53 AM

Action Rating: 5 out of 5

Sunday, December 21, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 40.9°F
Average Humidity: 76%
Chance of Rain: 0%
Wind: 33.3 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 8.01 μg/m3
PM10: 11.66 μg/m3
Carbon Monoxide: 156.01 μg/m3
Nitrogen Dioxide: 5.28 μg/m3
Sulphur Dioxide: 2.65 μg/m3
Ozone: 72.8 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 11:38 AM
Sunset: 4:15 PM
Daylight: 9 hrs 12 mins
Moonrise: 8:38 AM
Moon Transit: 1:02 PM
Moonset: 5:31 PM
Moon Phase: New
Moon Illumination: 1.5%

Best Times for Fishing or Hunting

Major Periods

2:51 AM - 5:21 AM
12:32 AM - 3:02 PM

Minor Periods

5:01 PM - 6:31 PM
8:08 AM - 9:38 AM

Action Rating: 3 out of 5

Monday, December 22, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 32.1°F
Average Humidity: 57%
Chance of Rain: 0%
Wind: 32.2 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 2.03 μg/m3
PM10: 2.47 μg/m3
Carbon Monoxide: 156.33 μg/m3
Nitrogen Dioxide: 2.92 μg/m3
Sulphur Dioxide: 1.49 μg/m3
Ozone: 75.46 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 11:39 AM
Sunset: 4:15 PM
Daylight: 9 hrs 12 mins
Moonrise: 9:14 AM
Moon Transit: 1:52 PM
Moonset: 6:37 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.5%

Best Times for Fishing or Hunting

Major Periods

3:42 AM - 6:12 AM
1:22 PM - 3:52 PM

Minor Periods

6:07 PM - 7:37 PM
8:44 AM - 10:14 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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