Current sea water temperature:
+68.7°F
| Minimum sea water temperature in September: | 74.3°F |
| Maximum sea water temperature in September: | 62.2°F |
| Average sea water temperature in September: | 69.1°F |
| more information | |
14 days
forecast
forecast
| Martha's Vineyard |
monthly
weather
weather
| Martha's Vineyard |
Sea water temperature for the last 10 days:
| September 9 | 68.7°F | September 4 | 69.4°F |
| September 8 | 68.7°F | September 3 | 69.4°F |
| September 7 | 69.3°F | September 2 | 69.8°F |
| September 6 | 69.8°F | September 1 | 69.6°F |
| September 5 | 70.7°F | August 31 | 70.9°F |
Monthly sea water temperature, °F
When is the warmest sea in Martha's Vineyard?
Based on the data about daily sea water temperature for the last three years the warmest sea in Martha's Vineyard was noticed in August, July and September.
Monthly Sea Temperatures in Martha's Vineyard, °F
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 70.7°F. The highest and lowest sea temperatures during the month were 72.3°F and 69.1°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 68.6°F. The highest and lowest sea temperatures during the month were 71.4°F and 66.4°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 67.9°F. The highest and lowest sea temperatures during the month were 69.8°F and 66.6°F.
current
weather
weather
| Martha's Vineyard |
weather in
September
September
| Martha's Vineyard |
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: 18:49
September 09, wednesday
2100
72°F
NE
18 mph
18 mph
September 10, thursday
0000
73°F
NE
23 mph
23 mph
0300
73°F
NE
25 mph
25 mph
0600
73°F
NE
26 mph
26 mph
0900
73°F
NE
27 mph
27 mph
1200
73°F
E
25 mph
25 mph
1500
75°F
NE
21 mph
21 mph
1800
75°F
E
17 mph
17 mph
