World Resorts USA Boston Weather

Boston sea water temperature

Current sea water temperature:
+42.8°F
Minimum sea water temperature in December: 50.2°F
Maximum sea water temperature in December: 37.9°F
Average sea water temperature in December: 45.1°F

Sea water temperature for the last 10 days:

December 21 42.8°F December 16 41.7°F
December 20 42.6°F December 15 41.0°F
December 19 42.4°F December 14 42.3°F
December 18 42.8°F December 13 43.9°F
December 17 42.3°F December 12 44.4°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:
2024
2023
2022

The average sea water temperature in August of 2024 was 66.6°F. The highest and lowest sea temperatures during the month were 70.3°F and 64.2°F.

Sea water temperature in July, °F

Show year:
2024
2023
2022

The average sea water temperature in July of 2024 was 66.0°F. The highest and lowest sea temperatures during the month were 68.5°F and 61.5°F.

Sea water temperature in September, °F

Show year:
2024
2023
2022

The average sea water temperature in September of 2024 was 64.4°F. The highest and lowest sea temperatures during the month were 67.8°F and 61.3°F.

Best time for vacation in Boston

Sunniest months:
August 16 days
July 15 days
September 13 days
Warmest months:
July 81.9 °F
August 80.5 °F
June 74.2 °F
Warmest sea temp:
August 67.6 °F
July 66.7 °F
September 64.3 °F
Coldest months:
January 33.4 °F
February 34.9 °F
December 39.5 °F
Rainiest months:
April 5 days
June 5 days
December 4 days
Windiest months:
January 10.9 mph
March 10.8 mph
February 10.6 mph

Boston on a weather map

Boston
+23°F
SE 14 mph
Feels like: +9°F
Precip.: 0%
Places in USA:
Name
°F
+23°F
+28°F
+77°F
+77°F
+61°F
+59°F
+68°F
+25°F
+55°F
+57°F
+55°F
+55°F
+54°F
+54°F
+23°F
24 Hours Forecast
Boston
Local time: 21:06
December 22, sunday
0000
19°F
SE
12 mph
0300
16°F
SE
11 mph
0600
14°F
SE
11 mph
0900
14°F
SE
11 mph
1200
19°F
SE
11 mph
1500
23°F
SE
9 mph
1800
23°F
SE
8 mph
2100
18°F
SE
6 mph
Units of measurement: °C / °F