Water Temperature of Nantucket Sound in West Yarmouth, MA

Current Water Temperature

73.6°F

Measurement Time: Monday, July 27, 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

77.4°F
Sunny
Sunny
65.5°F
80.3°F
70%
SSW 11 mph
14.6 mph
77.4°F
66.7°F
0 in
0%
6 mi
1009 mbar
0.8

Five Day Weather Forecast

Sunny
Mon
H: 81°F
L: 61°F
Sunny
Tue
H: 76°F
L: 65°F
Light rain shower
Wed
H: 74°F
L: 69°F
Light rain shower
Thu
H: 74°F
L: 69°F
Patchy rain nearby
Fri
H: 69°F
L: 66°F

Air Quality

AQI: 1 - Good
PM2.5: 9 μg/m3
PM10: 11.5 μg/m3
Carbon Monoxide: 108 μg/m3
Nitrogen Dioxide: 3.2 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 88 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

Small Craft Advisory issued July 27 at 1:23PM EDT until July 29 at 8:00PM EDT by NWS Boston/Norton MA

Effective: Mon July 27, 2026, 1:23 PM
Expires: Tue July 28, 2026, 6:00 AM

* WHAT...Southeast winds 15 to 25 kt with gusts up to 30 kt and seas 3 to 5 feet expected. * WHERE...In Massachusetts coastal waters, Nantucket Sound, Vineyard Sound and Buzzards Bay. In Rhode Island coastal waters, Rhode Island Sound and Block Island Sound. * WHEN...From 8 PM Tuesday to 8 PM EDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Monday, July 27, 2026

Weather Forecast

Sunny
80.8°F
61.3°F
69.7°F
77%
0 in
9%
0%
11 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 10.66 μg/m3
PM10: 13.9 μg/m3
Carbon Monoxide: 102.58 μg/m3
Nitrogen Dioxide: 2.52 μg/m3
Sulphur Dioxide: 0.55 μg/m3
Ozone: 75.33 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

Tuesday, July 28, 2026

Weather Forecast

Sunny
75.9°F
64.9°F
71.1°F
79%
0.02 in
36%
0%
17.9 mph
7.9


Air Quality

AQI: 1 - Good
PM2.5: 12.99 μg/m3
PM10: 17.61 μg/m3
Carbon Monoxide: 102.5 μg/m3
Nitrogen Dioxide: 2.67 μg/m3
Sulphur Dioxide: 0.67 μg/m3
Ozone: 97.63 μg/m3

Astronomical

Sunrise: 5:32 AM
Sun Transit: 12:47 AM
Sunset: 8:03 PM
Daylight: 14 hrs 31 mins
Moonrise: 7:50 PM
Moon Transit: 12:00 AM
Moonset: 4:13 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:19 PM - 4:49 PM

Minor Periods

7:20 PM - 8:50 PM
3:43 AM - 5:13 AM

Action Rating: 4 out of 5

Wednesday, July 29, 2026

Weather Forecast

Light rain shower
73.5°F
68.8°F
71°F
89%
0.69 in
86%
0%
25.7 mph
7.9


Air Quality

AQI: 1 - Good
PM2.5: 8.55 μg/m3
PM10: 12.13 μg/m3
Carbon Monoxide: 109.63 μg/m3
Nitrogen Dioxide: 2.13 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 99.04 μg/m3

Astronomical

Sunrise: 5:33 AM
Sun Transit: 12:47 AM
Sunset: 8:02 PM
Daylight: 14 hrs 29 mins
Moonrise: 8:20 PM
Moon Transit: 12:30 AM
Moonset: 5:17 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 2:30 AM
3:07 PM - 5:37 PM

Minor Periods

7:50 PM - 9:20 PM
4:47 AM - 6:17 AM

Action Rating: 4 out of 5

Thursday, July 30, 2026

Weather Forecast

Light rain shower
74.4°F
68.5°F
70.7°F
85%
0.27 in
80%
0%
7.4 mph
5.5


Air Quality

AQI: 1 - Good
PM2.5: 6.4 μg/m3
PM10: 8.51 μg/m3
Carbon Monoxide: 132.71 μg/m3
Nitrogen Dioxide: 4.09 μg/m3
Sulphur Dioxide: 0.71 μg/m3
Ozone: 100 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 12:47 AM
Sunset: 8:01 PM
Daylight: 14 hrs 27 mins
Moonrise: 8:44 PM
Moon Transit: 1:17 AM
Moonset: 6:23 AM
Moon Phase: Full
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

12:47 AM - 3:17 AM
3:52 PM - 6:22 PM

Minor Periods

8:14 PM - 9:44 PM
5:53 AM - 7:23 AM

Action Rating: 5 out of 5

Friday, July 31, 2026

Weather Forecast

Patchy rain nearby
68.9°F
66.1°F
67.4°F
90%
0.05 in
72%
0%
10.7 mph
5.4


Air Quality

AQI: 1 - Good
PM2.5: 1.94 μg/m3
PM10: 2.02 μg/m3
Carbon Monoxide: 210.11 μg/m3
Nitrogen Dioxide: 5.89 μg/m3
Sulphur Dioxide: 0.63 μg/m3
Ozone: 52.78 μg/m3

Astronomical

Sunrise: 5:35 AM
Sun Transit: 12:47 AM
Sunset: 7:59 PM
Daylight: 14 hrs 25 mins
Moonrise: 9:06 PM
Moon Transit: 2:01 AM
Moonset: 7:28 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

1:31 AM - 4:01 AM
4:36 PM - 7:06 PM

Minor Periods

8:36 PM - 10:06 PM
6:58 AM - 8:28 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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