Measurements:
°C
°F
CURRENT WEATHER
08:56
Boston
62°F
SW 9 mph
Feels like: 62°F
Precip: 3%
World Resorts USA Boston Weather

7 Day Weather Forecast

09.15
tue
DAY
64°F
SW 7 mph
precip
3%
NIGHT
56°F
N 6 mph
precip
10%
09.16
wed
DAY
76°F
NE 8 mph
precip
9%
NIGHT
66°F
NE 8 mph
precip
13%
09.17
thu
DAY
80°F
NE 4 mph
precip
13%
NIGHT
68°F
E 4 mph
precip
36%
09.18
fri
DAY
72°F
SW 9 mph
precip
3%
NIGHT
64°F
SW 9 mph
precip
15%
09.19
sat
DAY
64°F
SW 7 mph
precip
2%
NIGHT
66°F
N 14 mph
precip
43%
09.20
sun
DAY
74°F
N 9 mph
precip
22%
NIGHT
64°F
SW 4 mph
precip
20%
09.21
mon
DAY
64°F
SW 9 mph
precip
14%
NIGHT
60°F
W 8 mph
precip
11%

Boston Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Boston was 19.1°F. The maximum and minimum values were 18.1°F and 20.4°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 85.6 °F
August 84.0 °F
June 77.4 °F
Warmest sea temperature:
August 69.6 °F
July 68.7 °F
September 65.9 °F
The most cold months:
January 31.3 °F
February 32.9 °F
December 38.0 °F
The most rainy months:
April 5 days
June 4 days
October 4 days
The most windy months:
January 11 mph
March 11 mph
February 10 mph
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