Measurements:
°C
°F
Boston
46°F
W 14 mph
Feels like: 40°F
Precip: 0%
World Resorts USA Boston Weather September Weather in Boston

Boston Weather: September

Average Day Temperature: 74.7°F
Average Night Temperature: 62.9°F
Sea Water Temperature: 65.9°F
Number of Sunny Days: 13 days
Sunshine Hours: 11.8 - 13.1 hours
Number of Rainy Days: 3 days
Precipitation Totals: 1.7 in

Air Temperature in September, °F

Select Year: 2024 2023 2022

The highest day temperature in September 2024 was 86°F. The lowest night temperature was 55°F. The average values for day and night temperatures during September were 73.7°F и 60.6°F respectivly.

Boston Water Sea Temperature in September, °F

Select Year: 2024 2023 2022

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.

Sunny, Cloudy and Gloomy days

Most of the days in September are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in September, in

Precipitation total in September for Boston is 1.7 in. It makes september the least rainy month of the year.

Wind Speed in September, mph

The average wind speed in September is 8.1 mph. It makes September one of the most windless months of the year for Boston.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Boston in September is 7.5 hours.

Best Time to Visit Boston
The most sunny months:
August 16 days
July 15 days
September 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 31.6 °F
February 33.2 °F
December 38.4 °F
The most rainy months:
April 5 days
June 5 days
December 4 days
The most windy months:
January 11 mph
March 11 mph
February 10 mph

Boston on the Weather Map

USA Resorts:
NAME
Boston +46
Chicago +30
Hawaii +76
Honolulu +76
Houston +54
Las Vegas +44
Los Angeles +58
Maui +68
Miami +78
New York +46
San Diego +54
San Francisco +56
Sarasota +72
Tampa +70
Washington +50
24 Hours Weather Forecast
Boston
Local time: 11:12
21 nov, thursday
1200 46°F
W
14 mph
1500 48°F
SW
14 mph
1800 48°F
W
16 mph
2100 48°F
W
14 mph
22 nov, friday
0000 50°F
W
16 mph
0300 46°F
N
9 mph
0600 44°F
NE
7 mph
0900 46°F
N
4 mph