21.07
tue
tue
Day
79°F
NW 16 mph
Precip.
7%
7%
Night
72°F
NE 32 mph
Precip.
92%
92%
22.07
wed
wed
Day
73°F
NE 19 mph
Precip.
37%
37%
Night
70°F
NE 15 mph
Precip.
47%
47%
23.07
thu
thu
Day
72°F
E 12 mph
Precip.
2%
2%
Night
68°F
SW 9 mph
Precip.
5%
5%
24.07
fri
fri
Day
70°F
N 3 mph
Precip.
3%
3%
Night
68°F
NW 9 mph
Precip.
15%
15%
25.07
sat
sat
Day
70°F
W 14 mph
Precip.
3%
3%
Night
68°F
N 6 mph
Precip.
4%
4%
26.07
sun
sun
Day
72°F
W 6 mph
Precip.
3%
3%
Night
68°F
NE 7 mph
Precip.
4%
4%
27.07
mon
mon
Day
73°F
NE 18 mph
Precip.
9%
9%
Night
72°F
N 17 mph
Precip.
67%
67%
sea water
temperature
temperature
| Martha's Vineyard |
monthly
weather
weather
| Martha's Vineyard |
current
weather
weather
| Martha's Vineyard |
14 days
forecast
forecast
| Martha's Vineyard |
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 68.4°F. The highest and lowest sea temperatures during the month were 71.4°F and 66.4°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 69.0°F. The highest and lowest sea temperatures during the month were 72.1°F and 67.3°F.
Air temperature in Martha's Vineyard, °F
Precipitation total in Martha's Vineyard, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Martha's Vineyard
Martha's Vineyard on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Martha's Vineyard
Local time: 09:29
July 21, tuesday
1200
79°F
NW
16 mph
16 mph
1500
79°F
NW
20 mph
20 mph
1800
73°F
NW
19 mph
19 mph
2100
73°F
N
22 mph
22 mph
July 22, wednesday
0000
72°F
NE
32 mph
32 mph
0300
72°F
NE
25 mph
25 mph
0600
72°F
NE
20 mph
20 mph
0900
72°F
NE
19 mph
19 mph
