Measurements:
°C
°F
Boston
48°F
N 12 mph
Feels like: 42°F
Precip: 22%
World Resorts USA Boston Weather

Boston Sea Water Temperature

Current Sea Water Temperature:
+43.6°F
Maximum Sea Water Temperature in December: 50.2°F
Minimum Sea Water Temperature in December: 40.6°F
Average water temperature in December: 45.7°F

Sea Water Temperature for the Last 10 Days:

December 09 43.6°F December 04 45.6°F
December 08 43.4°F December 03 45.6°F
December 07 43.4°F December 02 45.4°F
December 06 43.0°F December 01 44.8°F
December 05 43.0°F November 30 45.0°F

When is the Warmest Sea for Boston?

According to our data for the last three years for Boston the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2019 2018 2017

The average sea surface temperature in August 2019 for Boston was 69.1°F. The maximum and minimum values were 65.2°F and 74.2°F respectively.

Sea Water Temperature in July

Select Year: 2019 2018 2017

The average sea surface temperature in July 2019 for Boston was 70.7°F. The maximum and minimum values were 65.6°F and 75.8°F respectively.

Sea Water Temperature in September

Select Year: 2019 2018 2017

The average sea surface temperature in September 2019 for Boston was 66.2°F. The maximum and minimum values were 63.6°F and 69.6°F respectively.

Best Time to Visit Boston
The most sunny months:
August 18 days
July 17 days
September 15 days
The most warm months:
July 85.8 °F
August 84.1 °F
June 75.8 °F
Warmest sea temperature:
August 69.1 °F
July 68.3 °F
September 65.5 °F
The most cold months:
January 30.1 °F
February 32.0 °F
December 38.3 °F
The most rainy months:
April 6 days
November 5 days
October 5 days
The most windy months:
January 12 mph
February 11 mph
March 11 mph

Boston on the Weather Map

USA Resorts:
NAME
Boston +48
Chicago +46
Hawaii +80
Honolulu +80
Houston +78
Jacksonville +82
Las Vegas +54
Los Angeles +68
Miami +82
New Orleans +78
New York +54
San Diego +62
San Francisco +56
San Jose +64
Washington +44
24 Hours Weather Forecast
Boston
Local time: 17:04
09 dec, monday
1800 50°F
N
14 mph
2100 44°F
N
15 mph
10 dec, tuesday
0000 44°F
NE
15 mph
0300 54°F
NE
14 mph
0600 54°F
NE
12 mph
0900 56°F
NE
12 mph
1200 58°F
NE
12 mph
1500 56°F
NE
12 mph