Measurements:
°C
°F
CURRENT WEATHER
07:38
Boston
30°F
NE 4 mph
Feels like: 28°F
Precip: 0%
World Resorts USA Boston Weather

7 Day Weather Forecast

12.18
thu
DAY
46°F
N 6 mph
precip
0%
NIGHT
44°F
N 9 mph
precip
0%
12.19
fri
DAY
56°F
N 25 mph
precip
100%
NIGHT
32°F
E 15 mph
precip
0%
12.20
sat
DAY
28°F
SE 13 mph
precip
0%
NIGHT
30°F
N 6 mph
precip
89%
12.21
sun
DAY
40°F
E 11 mph
precip
0%
NIGHT
28°F
E 13 mph
precip
0%
12.22
mon
DAY
26°F
SE 14 mph
precip
0%
NIGHT
22°F
SE 13 mph
precip
0%
12.23
tue
DAY
26°F
E 4 mph
precip
0%
NIGHT
30°F
NE 11 mph
precip
53%
12.24
wed
DAY
34°F
SE 10 mph
precip
0%
NIGHT
22°F
SE 10 mph
precip
0%

Boston Sea Water Temperature in December, °F

Select Year: 2025 2024 2023

The average sea surface temperature in December 2025 for Boston was 6.5°F. The maximum and minimum values were 5.6°F and 6.9°F respectively.

Boston on the Weather Map

Best Time to Visit Boston
The most sunny months:
August 16 days
July 15 days
November 14 days
The most warm months:
July 85.5 °F
August 83.7 °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
May 4 days
October 4 days
The most windy months:
January 11 mph
March 11 mph
February 10 mph
more details