Current sea water temperature:
+37.6°F
| Minimum sea water temperature in March: | 47.3°F |
| Maximum sea water temperature in March: | 34.2°F |
| Average sea water temperature in March: | 39.2°F |
| more information | |
14 days
forecast
forecast
| Boston |
monthly
weather
weather
| Boston |
Sea water temperature for the last 10 days:
| March 16 | 37.6°F | March 11 | 39.4°F |
| March 15 | 38.3°F | March 10 | 36.7°F |
| March 14 | 37.8°F | March 9 | 35.2°F |
| March 13 | 39.0°F | March 8 | 35.4°F |
| March 12 | 39.7°F | March 7 | 35.1°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:
2025
2024
2023
The average sea water temperature in July of 2025 was 67.1°F. The highest and lowest sea temperatures during the month were 70.0°F and 63.7°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
March
March
| Boston |
Best time for vacation in Boston
Boston on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Boston
Local time: 00:21
March 17, tuesday
0300
59°F
N
27 mph
27 mph
0600
46°F
NE
17 mph
17 mph
0900
41°F
E
15 mph
15 mph
1200
41°F
E
16 mph
16 mph
1500
43°F
E
14 mph
14 mph
1800
37°F
E
14 mph
14 mph
2100
28°F
E
13 mph
13 mph
March 18, wednesday
0000
25°F
E
14 mph
14 mph
