Measurements:
°C
°F
Charlestown
52°F
W 25 mph
Feels like: 46°F
Precip: 0%
World Resorts USA Charlestown Weather September Weather in Charlestown

Charlestown Weather: September

Average Day Temperature: 72.3°F
Average Night Temperature: 63.9°F
Sea Water Temperature: 70.6°F
Number of Sunny Days: 14 days
Sunshine Hours: 11.8 - 13.1 hours
Number of Rainy Days: 2 days
Precipitation Totals: 1.3 in

Air Temperature in September, °F

Select Year: 2024 2023 2022

The highest day temperature in September 2024 was 75°F. The lowest night temperature was 58°F. The average values for day and night temperatures during September were 69.1°F и 63.6°F respectivly.

Charlestown Water Sea Temperature in September, °F

Select Year: 2024 2023 2022

The average sea surface temperature in September 2024 for Charlestown was 68.9°F. The maximum and minimum values were 66.2°F and 71.4°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 Charlestown is 1.3 in. It makes september one of the least rainy months of the year.

Wind Speed in September, mph

The average wind speed in September is 9.7 mph. It makes September one of the most windless months of the year for Charlestown.

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 Charlestown in September is 7.8 hours.

Best Time to Visit Charlestown
The most sunny months:
November 17 days
September 14 days
October 13 days
The most warm months:
July 80.6 °F
August 79.3 °F
June 72.5 °F
Warmest sea temperature:
August 73.4 °F
July 71.8 °F
September 70.6 °F
The most cold months:
January 36.1 °F
February 36.6 °F
December 42.1 °F
The most rainy months:
October 4 days
April 3 days
November 3 days
The most windy months:
January 12 mph
March 12 mph
December 12 mph

Charlestown on the Weather Map

USA Resorts:
NAME
Boston +48
Chicago +34
Hawaii +80
Honolulu +80
Houston +74
Las Vegas +68
Los Angeles +74
Maui +74
Miami +80
New York +48
San Diego +70
San Francisco +58
Sarasota +74
Tampa +72
Washington +48
24 Hours Weather Forecast
Charlestown
Local time: 16:39
21 nov, thursday
1800 52°F
W
25 mph
2100 52°F
W
27 mph
22 nov, friday
0000 52°F
W
29 mph
0300 50°F
NE
29 mph
0600 48°F
NE
29 mph
0900 48°F
NE
27 mph
1200 50°F
NE
21 mph
1500 50°F
NE
16 mph