Water Temperature of Nantucket Sound in West Yarmouth, MA

Current Water Temperature

73.4°F

Measurement Time: Sunday, August 2, 2026, 11:30 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

73.9°F
Patchy rain nearby
Patchy rain nearby
75°F
78.2°F
93%
SSW 13.4 mph
22.9 mph
73.9°F
71.8°F
0 in
100%
6 mi
1011 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Mon
H: 77°F
L: 72°F
Sunny
Tue
H: 80°F
L: 66°F
Partly Cloudy
Wed
H: 76°F
L: 70°F
Sunny
Thu
H: 82°F
L: 72°F
Sunny
Fri
H: 83°F
L: 74°F

Air Quality

AQI: 1 - Good
PM2.5: 5.8 μg/m3
PM10: 8.8 μg/m3
Carbon Monoxide: 97 μg/m3
Nitrogen Dioxide: 1.2 μg/m3
Sulphur Dioxide: 0.2 μg/m3
Ozone: 63 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 12:47 AM
Sunset: 7:56 PM
Daylight: 14 hrs 18 mins
Moonrise: 10:10 PM
Moon Transit: 4:11 AM
Moonset: 10:48 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

3:41 AM - 6:11 AM
6:46 PM - 9:16 PM

Minor Periods

9:40 PM - 11:10 PM
10:18 AM - 11:48 AM

Action Rating: 2 out of 5

Small Craft Advisory issued August 2 at 1:51PM EDT until August 4 at 2:00AM EDT by NWS Boston/Norton MA

Effective: Sun August 2, 2026, 1:51 PM
Expires: Mon August 3, 2026, 5:00 AM

* WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and seas 3 to 5 feet expected. * WHERE...Nantucket Sound, Vineyard Sound and Buzzards Bay. * WHEN...From 8 AM Monday to 2 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Monday, August 3, 2026

Weather Forecast

Patchy rain nearby
76.8°F
71.8°F
74.1°F
92%
0.28 in
89%
0%
28.4 mph
4.5


Air Quality

AQI: 1 - Good
PM2.5: 6.6 μg/m3
PM10: 10.8 μg/m3
Carbon Monoxide: 96.96 μg/m3
Nitrogen Dioxide: 1.27 μg/m3
Sulphur Dioxide: 0.23 μg/m3
Ozone: 53.25 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 12:47 AM
Sunset: 7:56 PM
Daylight: 14 hrs 18 mins
Moonrise: 10:10 PM
Moon Transit: 4:11 AM
Moonset: 10:48 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

3:41 AM - 6:11 AM
6:46 PM - 9:16 PM

Minor Periods

9:40 PM - 11:10 PM
10:18 AM - 11:48 AM

Action Rating: 2 out of 5

Tuesday, August 4, 2026

Weather Forecast

Sunny
79.5°F
66.2°F
72.3°F
65%
0 in
17%
0%
13.2 mph
6.8


Air Quality

AQI: 1 - Good
PM2.5: 4 μg/m3
PM10: 4.52 μg/m3
Carbon Monoxide: 127.58 μg/m3
Nitrogen Dioxide: 3.9 μg/m3
Sulphur Dioxide: 0.64 μg/m3
Ozone: 92.46 μg/m3

Astronomical

Sunrise: 5:39 AM
Sun Transit: 12:47 AM
Sunset: 7:55 PM
Daylight: 14 hrs 16 mins
Moonrise: 10:35 PM
Moon Transit: 4:57 AM
Moonset: 11:58 AM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

4:27 AM - 6:57 AM
7:34 PM - 10:04 PM

Minor Periods

10:05 PM - 11:35 PM
11:28 AM - 12:58 AM

Action Rating: 3 out of 5

Wednesday, August 5, 2026

Weather Forecast

Partly Cloudy
75.6°F
70.3°F
72.8°F
90%
0.19 in
81%
0%
17 mph
6.7


Air Quality

AQI: 1 - Good
PM2.5: 6.84 μg/m3
PM10: 9.17 μg/m3
Carbon Monoxide: 149.58 μg/m3
Nitrogen Dioxide: 4.96 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 98.21 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 12:47 AM
Sunset: 7:54 PM
Daylight: 14 hrs 14 mins
Moonrise: 11:04 PM
Moon Transit: 5:45 AM
Moonset: 1:11 PM
Moon Phase: Last Quarter
Moon Illumination: 43.2%

Best Times for Fishing or Hunting

Major Periods

5:15 AM - 7:45 AM
8:25 PM - 10:55 PM

Minor Periods

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

Action Rating: 3 out of 5

Thursday, August 6, 2026

Weather Forecast

Sunny
81.5°F
72.3°F
76.6°F
85%
0 in
17%
0%
18.3 mph
8.9


Air Quality

AQI: 1 - Good
PM2.5: 7.03 μg/m3
PM10: 10.05 μg/m3
Carbon Monoxide: 116.55 μg/m3
Nitrogen Dioxide: 4.26 μg/m3
Sulphur Dioxide: 0.88 μg/m3
Ozone: 77.17 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 12:47 AM
Sunset: 7:52 PM
Daylight: 14 hrs 12 mins
Moonrise: 12:04 AM
Moon Transit: 6:39 AM
Moonset: 2:27 PM
Moon Phase: Last Quarter
Moon Illumination: 32.3%

Best Times for Fishing or Hunting

Major Periods

6:09 AM - 8:39 AM
9:21 PM - 11:51 PM

Minor Periods

1:57 PM - 3:27 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Friday, August 7, 2026

Weather Forecast

Sunny
82.5°F
73.8°F
77.4°F
84%
0.13 in
66%
0%
18.6 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 6.51 μg/m3
PM10: 10.07 μg/m3
Carbon Monoxide: 110.33 μg/m3
Nitrogen Dioxide: 2.54 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 53 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:46 AM
Sunset: 7:51 PM
Daylight: 14 hrs 9 mins
Moonrise: 12:42 AM
Moon Transit: 7:37 AM
Moonset: 3:42 PM
Moon Phase: Last Quarter
Moon Illumination: 22.2%

Best Times for Fishing or Hunting

Major Periods

7:07 AM - 9:37 AM
12:00 AM - 12:00 AM

Minor Periods

3:12 PM - 4:42 PM
12:00 AM - 12:00 AM

Action Rating: 2 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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