Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
A minor decrease in the average high-temperature is observed during September, shifting from a tropical 88.3°F (31.3°C) in August to a warm 82.4°F (28°C). Throughout September nights, Sans Souci registers an average low-temperature of 61.9°F (16.6°C).Heat index
Throughout September, the heat index is computed to be a hot 87.8°F (31°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.Research indicates the heat index considers values in shaded locales and with light winds. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
Humidity
The average relative humidity in September is 72%.Rainfall
September is the month with the least rainfall. Rain falls for 11.5 days and accumulates 1.38" (35mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 23min.On the first day of the month, sunrise is at 7:03 am and sunset at 7:55 pm. On the last day of September, sunrise is at 7:24 am and sunset at 7:14 pm EDT.
Sunshine
In Sans Souci, the average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The daily high UV index of 5 in September translates into this advice:
Guard yourself - An obligation to protect skin and eyes from harm exists. Around midday, solar radiation is most harmful; hence, exposure should be limited. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow in Sans Souci?
How many hours of daylight does Sans Souci have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Sans Souci have in September?
What is the UV index intensity in September?
Average temperature in September
Sans Souci, SC
- Average high temperature in September: 82.4°F
The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (49.3°F).
- Average low temperature in September: 61.9°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (33.1°F).
Average pressure in September
Sans Souci, SC
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Sans Souci, SC
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Sans Souci, SC
- Average humidity in September: 72%
The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (69%).
Average rainfall in September
Sans Souci, SC
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is September (1.38").
Average rainfall days in September
Sans Souci, SC
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is October (8.5 days).
Average snowfall in September
Sans Souci, SC
- Average snowfall in September: 0"
The month with the highest snowfall is December (1.81").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Sans Souci, SC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Sans Souci, SC
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Sans Souci, SC
- Average sunshine days in September: 17 days
The month with the most sunshine days is October (21.7 days).
The month with the least sunshine days is August (13.2 days).
Average UV index in September
Sans Souci, SC
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Sans Souci, SC
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 41).
The months with the least cloud cover are June and July (Cloud cover 27).
Average visibility in September
Sans Souci, SC
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Sans Souci, South Carolina, USA
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