Current sea water temperature:
+69.6°F
| Minimum sea water temperature in July: | 75.0°F |
| Maximum sea water temperature in July: | 60.1°F |
| Average sea water temperature in July: | 66.8°F |
| more information | |
14 days
forecast
forecast
| Boston |
monthly
weather
weather
| Boston |
Sea water temperature for the last 10 days:
| July 16 | 69.6°F | July 11 | 70.5°F |
| July 15 | 70.9°F | July 10 | 68.2°F |
| July 14 | 69.8°F | July 9 | 66.2°F |
| July 13 | 70.3°F | July 8 | 66.4°F |
| July 12 | 70.2°F | July 7 | 68.7°F |
Monthly sea water temperature, °F
When is the warmest sea in Boston?
Based on the data about daily sea water temperature for the last three years the warmest sea in Boston was noticed in August, July and September.
Monthly Sea Temperatures in Boston, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 67.2°F. The highest and lowest sea temperatures during the month were 70.5°F and 64.9°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 70.9°F and 65.8°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 63.7°F. The highest and lowest sea temperatures during the month were 66.7°F and 60.1°F.
current
weather
weather
| Boston |
weather in
July
July
| Boston |
Best time for vacation in Boston
Boston on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Boston
Local time: 07:59
July 16, thursday
0900
79°F
E
8 mph
8 mph
1200
93°F
E
12 mph
12 mph
1500
95°F
E
13 mph
13 mph
1800
90°F
E
11 mph
11 mph
2100
75°F
S
10 mph
10 mph
July 17, friday
0000
68°F
E
3 mph
3 mph
0300
66°F
SE
6 mph
6 mph
0600
64°F
SE
6 mph
6 mph
