Water Temperature of Nantucket Sound in West Yarmouth, MA

Current Water Temperature

73.2°F

Measurement Time: Thursday, July 23, 2026, 3:30 PM EDT

Temperature Locations

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Local Points of Interest

Atlantic Ocean

Nantucket Sound

Station Name: NANTUCKET SOUND
Station Type: Other
Data Source: National Data Buoy Center

Elevation Above Sea Level: 0 feet

Nearest Address:
973–1019 Great Island Rd
West Yarmouth, MA 02673
Barnstable County

GPS Coordinates: 41.493, -70.279

Nearby Water Temperatures

Childs River, Waquoit Village, MA (14.3 mi)
Nantucket Sound, Nantucket, MA (17.2 mi)
Woods Hole, Woods Hole, MA (20.4 mi)
Pleasant Bay, Chatham, MA (21.7 mi)
Herring River, Wellfleet, MA (32.2 mi)
Taunton River, Bridgewater, MA (46.4 mi)
Taunton River, Fall River, MA (48 mi)
Atlantic Ocean, Provincetown, MA (49.5 mi)
Mill River, Taunton, MA (50.4 mi)
Narragansett Bay, Newport, RI (54.2 mi)
Atlantic Ocean, New Shoreham, RI (57.1 mi)
Providence River, Barrington, RI (57.1 mi)
Great Harbor, North Kingstown, RI (58.8 mi)
Providence River, Providence, RI (61.9 mi)
Atlantic Ocean, Scituate, MA (62 mi)

Weather for West Yarmouth, Massachusetts

Current Weather

75°F
Sunny
Sunny
77°F
79.6°F
43%
ENE 6.9 mph
9.6 mph
78.8°F
56.6°F
0 in
0%
9 mi
1019 mbar
3

Five Day Weather Forecast

Sunny
Thu
H: 79°F
L: 64°F
Sunny
Fri
H: 75°F
L: 64°F
Sunny
Sat
H: 71°F
L: 65°F
Partly Cloudy
Sun
H: 69°F
L: 64°F
Sunny
Mon
H: 74°F
L: 64°F

Air Quality

AQI: 1 - Good
PM2.5: 3.9 μg/m3
PM10: 5.1 μg/m3
Carbon Monoxide: 109 μg/m3
Nitrogen Dioxide: 1.4 μg/m3
Sulphur Dioxide: 0.2 μg/m3
Ozone: 97 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 12:47 AM
Sunset: 8:07 PM
Daylight: 14 hrs 40 mins
Moonrise: 3:46 PM
Moon Transit: 8:18 PM
Moonset: 12:13 AM
Moon Phase: First Quarter
Moon Illumination: 66.1%

Best Times for Fishing or Hunting

Major Periods

10:07 AM - 12:37 AM
7:48 PM - 10:18 PM

Minor Periods

3:16 PM - 4:46 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Small Craft Advisory issued July 23 at 2:39AM EDT until July 23 at 11:00PM EDT by NWS Boston/Norton MA

Effective: Thu July 23, 2026, 2:39 AM
Expires: Thu July 23, 2026, 5:00 PM

* WHAT...Northeast winds 10 to 15 kt and seas 4 to 7 feet. * WHERE...In Massachusetts coastal waters, Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM and Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket. In Rhode Island coastal waters, Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island. * WHEN...Until 11 PM EDT this evening. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Thursday, July 23, 2026

Weather Forecast

Sunny
78.8°F
63.5°F
70.1°F
68%
0 in
7%
0%
15.7 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 4.39 μg/m3
PM10: 5.28 μg/m3
Carbon Monoxide: 141.25 μg/m3
Nitrogen Dioxide: 4.65 μg/m3
Sulphur Dioxide: 0.45 μg/m3
Ozone: 77.38 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 12:47 AM
Sunset: 8:07 PM
Daylight: 14 hrs 40 mins
Moonrise: 3:46 PM
Moon Transit: 8:18 PM
Moonset: 12:13 AM
Moon Phase: First Quarter
Moon Illumination: 66.1%

Best Times for Fishing or Hunting

Major Periods

10:07 AM - 12:37 AM
7:48 PM - 10:18 PM

Minor Periods

3:16 PM - 4:46 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Friday, July 24, 2026

Weather Forecast

Sunny
75.2°F
63.7°F
69.1°F
59%
0 in
4%
0%
11.2 mph
7.9


Air Quality

AQI: 1 - Good
PM2.5: 5.46 μg/m3
PM10: 7.2 μg/m3
Carbon Monoxide: 136.88 μg/m3
Nitrogen Dioxide: 5.04 μg/m3
Sulphur Dioxide: 0.55 μg/m3
Ozone: 85.63 μg/m3

Astronomical

Sunrise: 5:28 AM
Sun Transit: 12:47 AM
Sunset: 8:07 PM
Daylight: 14 hrs 39 mins
Moonrise: 4:48 PM
Moon Transit: 9:08 PM
Moonset: 12:46 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%

Best Times for Fishing or Hunting

Major Periods

10:56 AM - 1:26 PM
8:38 PM - 11:08 PM

Minor Periods

4:18 PM - 5:48 PM
12:16 AM - 1:46 AM

Action Rating: 2 out of 5

Saturday, July 25, 2026

Weather Forecast

Sunny
71.4°F
64.9°F
67.9°F
60%
0 in
5%
0%
17.2 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 7.33 μg/m3
PM10: 9.45 μg/m3
Carbon Monoxide: 123.67 μg/m3
Nitrogen Dioxide: 4.4 μg/m3
Sulphur Dioxide: 0.65 μg/m3
Ozone: 82.5 μg/m3

Astronomical

Sunrise: 5:29 AM
Sun Transit: 12:47 AM
Sunset: 8:06 PM
Daylight: 14 hrs 37 mins
Moonrise: 5:44 PM
Moon Transit: 10:00 PM
Moonset: 1:26 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.2%

Best Times for Fishing or Hunting

Major Periods

11:47 AM - 2:17 PM
12:00 AM - 12:00 AM

Minor Periods

5:14 PM - 6:44 PM
12:56 AM - 2:26 AM

Action Rating: 2 out of 5

Sunday, July 26, 2026

Weather Forecast

Partly Cloudy
68.8°F
64.1°F
67.1°F
80%
0 in
22%
0%
12.3 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 7.2 μg/m3
PM10: 9.67 μg/m3
Carbon Monoxide: 106.25 μg/m3
Nitrogen Dioxide: 1.68 μg/m3
Sulphur Dioxide: 0.43 μg/m3
Ozone: 83.83 μg/m3

Astronomical

Sunrise: 5:30 AM
Sun Transit: 12:47 AM
Sunset: 8:05 PM
Daylight: 14 hrs 35 mins
Moonrise: 6:34 PM
Moon Transit: 10:51 PM
Moonset: 2:15 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

12:38 AM - 3:08 PM
12:00 AM - 12:00 AM

Minor Periods

6:04 PM - 7:34 PM
1:45 AM - 3:15 AM

Action Rating: 2 out of 5

Monday, July 27, 2026

Weather Forecast

Sunny
73.5°F
63.6°F
67.9°F
84%
0 in
15%
0%
9.4 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 3.38 μg/m3
PM10: 5.37 μg/m3
Carbon Monoxide: 127.78 μg/m3
Nitrogen Dioxide: 1.5 μg/m3
Sulphur Dioxide: 0.34 μg/m3
Ozone: 51.22 μg/m3

Astronomical

Sunrise: 5:31 AM
Sun Transit: 12:47 AM
Sunset: 8:04 PM
Daylight: 14 hrs 33 mins
Moonrise: 7:16 PM
Moon Transit: 11:41 PM
Moonset: 3:11 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

1:30 PM - 4:00 PM
12:00 AM - 12:00 AM

Minor Periods

6:46 PM - 8:16 PM
2:41 AM - 4:11 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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