World Resorts USA Boston Weather

Boston sea water temperature

Current sea water temperature:
+53.4°F
Minimum sea water temperature in November: 58.5°F
Maximum sea water temperature in November: 43.5°F
Average sea water temperature in November: 50.7°F

Sea water temperature for the last 10 days:

November 13 53.4°F November 8 54.3°F
November 12 53.8°F November 7 55.2°F
November 11 53.6°F November 6 55.4°F
November 10 54.0°F November 5 54.7°F
November 9 54.5°F November 4 53.4°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:
2026
2025
2024

The average sea water temperature in August of 2026 was 68.4°F. The highest and lowest sea temperatures during the month were 71.4°F and 66.0°F.

Sea water temperature in July, °F

Show year:
2026
2025
2024

The average sea water temperature in July of 2026 was 67.1°F. The highest and lowest sea temperatures during the month were 70.9°F and 63.3°F.

Sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 64.6°F. The highest and lowest sea temperatures during the month were 68.7°F and 60.1°F.

Best time for vacation in Boston

Sunniest months:
August 16 days
July 15 days
November 14 days
Warmest months:
July 82.1 °F
August 80.6 °F
June 74.6 °F
Warmest sea temp:
August 67.6 °F
July 66.8 °F
September 64.3 °F
Coldest months:
January 33.2 °F
February 34.6 °F
December 39.2 °F
Rainiest months:
April 5 days
December 4 days
June 4 days
Windiest months:
January 10.7 mph
March 10.6 mph
February 10.3 mph

Boston on a weather map

Boston
+36°F
SE 7 mph
Feels like: +30°F
Precip.: 21%
Places in USA:
Name
°F
+36°F
+39°F
+70°F
+61°F
+63°F
+66°F
+63°F
+39°F
+63°F
+55°F
+63°F
+64°F
+59°F
+63°F
+37°F
24 Hours Forecast
Boston
Local time: 01:18
November 14, saturday
0300
34°F
SE
6 mph
0600
34°F
SE
6 mph
0900
39°F
SE
7 mph
1200
45°F
SE
7 mph
1500
45°F
SE
7 mph
1800
41°F
E
7 mph
2100
39°F
E
7 mph
November 15, sunday
0000
36°F
E
7 mph
Units of measurement: °C / °F