Current sea water temperature:
+42.8°F
| Minimum sea water temperature in April: | 50.2°F |
| Maximum sea water temperature in April: | 36.9°F |
| Average sea water temperature in April: | 43.9°F |
| more information | |
14 days
forecast
forecast
| Boston |
monthly
weather
weather
| Boston |
Sea water temperature for the last 10 days:
| April 6 | 42.8°F | April 1 | 41.0°F |
| April 5 | 43.5°F | March 31 | 41.7°F |
| April 4 | 41.9°F | March 30 | 40.5°F |
| April 3 | 41.2°F | March 29 | 40.3°F |
| April 2 | 41.0°F | March 28 | 40.3°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
April
April
| Boston |
Best time for vacation in Boston
Boston on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Boston
Local time: 10:28
April 06, monday
1200
45°F
E
13 mph
13 mph
1500
46°F
E
14 mph
14 mph
1800
48°F
E
13 mph
13 mph
2100
43°F
E
9 mph
9 mph
April 07, tuesday
0000
39°F
E
7 mph
7 mph
0300
36°F
E
6 mph
6 mph
0600
36°F
NE
6 mph
6 mph
0900
37°F
E
7 mph
7 mph
