World Resorts USA Boston Weather

Boston weather in September

Weather in Boston: September

Average day temperature: 72.2°F
Average night temperature: 61.6°F
Sea water temperature: 64.3°F
Number of sunny days: 13 days
Day length: 11.8 - 13.1 hours
Number of rainy days: 3 days
Precipitation totals: 1.7 in.

Air temperature in September, °F

Show year:
2024
2023
2022

The highest day temperature during September of 2024 was 82°F. At the same time the lowest night temperature was 54°F. Day and night temperature averages during September were 71.3°F and 59.5°F.

Sea water temperature in Boston in September, °F

Show year:
2024
2023
2022

The average sea water temperature in September of 2024 was 64.4°F. The highest and lowest sea temperatures during the month were 67.8°F and 61.3°F.

Sunny, partly cloudy and cloudy days

Number of sunny, partly cloudy and cloudy days in September is almost equal.

Precipitation total in September, in.

Precipitation total value in Boston in September is 1.8 in. Other months of the year show relatively similar values.

Wind speed in September, mph

The average wind speed value in September is 8.0 mph It makes September one of the least windy months of the year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 6.5.

Best time for vacation in Boston

Sunniest months:
August 16 days
July 15 days
September 13 days
Warmest months:
July 81.9 °F
August 80.5 °F
June 74.2 °F
Warmest sea temp:
August 67.6 °F
July 66.7 °F
September 64.3 °F
Coldest months:
January 33.4 °F
February 34.9 °F
December 39.5 °F
Rainiest months:
April 5 days
June 5 days
December 4 days
Windiest months:
January 10.9 mph
March 10.8 mph
February 10.6 mph

Boston on a weather map

Boston
+48°F
N 7 mph
Feels like: +45°F
Precip.: 0%
Places in USA:
Name
°F
+48°F
+59°F
+77°F
+77°F
+54°F
+66°F
+79°F
+73°F
+57°F
+64°F
+57°F
+73°F
+73°F
+77°F
+64°F
24 Hours Forecast
Boston
Local time: 00:50
November 05, tuesday
0300
50°F
NE
6 mph
0600
52°F
NE
8 mph
0900
55°F
NE
9 mph
1200
64°F
NE
12 mph
1500
66°F
NE
11 mph
1800
63°F
NE
11 mph
2100
61°F
NE
12 mph
November 06, wednesday
0000
59°F
NE
13 mph
Units of measurement: °C / °F