Measurements:
°C
°F
Boston
42°F
W 9 mph
Feels like: 36°F
Precip: 0%
World Resorts USA Boston Weather

Boston Sea Water Temperature

Current Sea Water Temperature:
+41.4°F
Maximum Sea Water Temperature in April: 50.2°F
Minimum Sea Water Temperature in April: 35.4°F
Average water temperature in April: 43.2°F

Sea Water Temperature for the Last 10 Days:

April 11 41.4°F April 06 41.8°F
April 10 41.6°F April 05 40.6°F
April 09 42.6°F April 04 40.6°F
April 08 41.2°F April 03 40.6°F
April 07 41.4°F April 02 41.6°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

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0
11
22
33
44
55
66
77
88
44.5
50.7
59
65.9
69.6
68.6
61.4
52.2
43.2
38.1
36.8
39.8

Sea Water Temperature in August

Select Year: 2024 2023 2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
60
63
66
69
72
75
78
81

The average sea surface temperature in August 2024 for Boston was 68.4°F. The maximum and minimum values were 65.8°F and 72.6°F respectively.

Sea Water Temperature in July

Select Year: 2024 2023 2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
58
61
64
67
70
73
76
79

The average sea surface temperature in July 2024 for Boston was 67.7°F. The maximum and minimum values were 62.8°F and 70.6°F respectively.

Sea Water Temperature in September

Select Year: 2024 2023 2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
58
61
64
67
70
73
76
79

The average sea surface temperature in September 2024 for Boston was 66.0°F. The maximum and minimum values were 62.6°F and 69.8°F respectively.

Best Time to Visit Boston
The most sunny months:
August 16 days
July 15 days
June 13 days
The most warm months:
July 85.5 °F
August 83.9 °F
June 76.9 °F
Warmest sea temperature:
August 69.5 °F
July 68.6 °F
September 65.9 °F
The most cold months:
January 31.5 °F
February 33.1 °F
December 38.2 °F
The most rainy months:
April 5 days
June 5 days
July 4 days
The most windy months:
January 11 mph
March 11 mph
February 10 mph

Boston on the Weather Map

USA Resorts:
NAME
Boston +42
Chicago +48
Hawaii +78
Honolulu +78
Houston +90
Las Vegas +94
Los Angeles +80
Miami +82
New York +44
Orlando +88
San Diego +72
San Francisco +60
Sarasota +84
Tampa +88
Washington +46
24 Hours Weather Forecast
Boston
Local time: 15:40
11 apr, friday
1800 40°F
W
9 mph
2100 38°F
SW
7 mph
12 apr, saturday
0000 36°F
SW
9 mph
0300 36°F
SW
11 mph
0600 36°F
W
14 mph
0900 34°F
SW
15 mph
1200 34°F
SW
14 mph
1500 34°F
SW
14 mph