Measurements:
°C
°F
Mount Pleasant
50°F
NW 4 mph
Feels like: 48°F
Precip: 0%
World Resorts USA Mount Pleasant Weather September Weather in Mount Pleasant

Mount Pleasant Weather: September

Average Day Temperature: 85.9°F
Average Night Temperature: 75.4°F
Sea Water Temperature: 84.0°F
Number of Sunny Days: 11 days
Sunshine Hours: 11.9 - 12.8 hours
Number of Rainy Days: 3 days
Precipitation Totals: 1.4 in

Air Temperature in September, °F

Select Year: 2025 2024 2023

The highest day temperature in September 2025 was 93°F. The lowest night temperature was 70°F. The average values for day and night temperatures during September were 86.3°F и 74.6°F respectivly.

Mount Pleasant Water Sea Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Mount Pleasant was 81.9°F. The maximum and minimum values were 78.8°F and 84.6°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during September. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in September, in

Precipitation total in September for Mount Pleasant is 1.4 in. It makes september one of the most rainy months of the year.

Wind Speed in September, mph

The average wind speed in September is 7.9 mph. This value is relatively stable throughout the year.

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 Mount Pleasant in September is 7.3 hours.

Best Time to Visit Mount Pleasant
The most sunny months:
October 17 days
April 15 days
December 14 days
The most warm months:
July 91.7 °F
August 89.7 °F
June 88.6 °F
Warmest sea temperature:
July 87.9 °F
August 87.7 °F
September 84.0 °F
The most cold months:
January 56.5 °F
December 60.2 °F
February 61.5 °F
The most rainy months:
July 5 days
August 4 days
September 3 days
The most windy months:
January 8 mph
March 8 mph
February 8 mph

Mount Pleasant on the Weather Map

USA Resorts:
NAME
Chicago -2
Hawaii +78
Honolulu +78
Houston +44
Las Vegas +40
Los Angeles +52
Maui +72
Miami +72
Miami Beach +80
New York +18
San Diego +54
San Francisco +46
Sarasota +62
Tampa +62
Washington +28
24 Hours Weather Forecast
Mount Pleasant
Local time: 03:05
05 dec, friday
0600 50°F
SW
4 mph
0900 54°F
SW
8 mph
1200 52°F
SW
5 mph
1500 50°F
S
8 mph
1800 50°F
SE
7 mph
2100 48°F
SE
2 mph
06 dec, saturday
0000 46°F
SE
4 mph
0300 44°F
S
3 mph