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
September's advent notes a subtle adjustment in average high-temperature to a moderately hot 85.5°F (29.7°C) from August. Whitemarsh Island in September anticipates an average nighttime temperature of 72.5°F (22.5°C).Heat index
The heat index in September is calculated to be a torrid 95°F (35°C). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.Heat index guidelines indicate values are for light wind scenarios and shaded regions. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
The average relative humidity in September is 75%.Rainfall
In Whitemarsh Island, in September, it is raining for 13.5 days, with typically 2.36" (60mm) of accumulated precipitation. In Whitemarsh Island, during the entire year, the rain falls for 155.6 days and collects up to 29.41" (747mm) of precipitation.Snowfall
February through November are months without snowfall.Daylight
The average length of the day in September is 12h and 21min.On the first day of September, sunrise is at 6:59 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:09 pm EDT.
Sunshine
The average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Whitemarsh Island during September?
What is the average humidity in September in Whitemarsh Island?
How much does it rain in Whitemarsh Island in September?
When it does not snow in Whitemarsh Island?
What is the average length of the day in September in Whitemarsh Island?
When are sunrise and sunset in September in Whitemarsh Island?
How long on average sun shines in September in Whitemarsh Island?
What is the UV index reading in September in Whitemarsh Island?
Average temperature in September
Whitemarsh Island, GA
- Average high temperature in September: 85.5°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (58.1°F).
- Average low temperature in September: 72.5°F
The months with the highest average low temperature are July and August (75.7°F).
The coldest month (with the lowest average low temperature) is January (43.7°F).
Average pressure in September
Whitemarsh Island, GA
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).
Average wind speed in September
Whitemarsh Island, GA
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in September
Whitemarsh Island, GA
- Average humidity in September: 75%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is March (71%).
Average rainfall in September
Whitemarsh Island, GA
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is August (4.33").
The driest month (with the least rainfall) is January (1.38").
Average rainfall days in September
Whitemarsh Island, GA
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is August (21.3 days).
The month with the least rainy days is November (7.3 days).
Average snowfall in September
Whitemarsh Island, GA
- Average snowfall in September: 0"
The months with the highest snowfall are January and December (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Whitemarsh Island, GA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January, February and December (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Whitemarsh Island, GA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 8h and 3min
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 24min).
Average sunshine days in September
Whitemarsh Island, GA
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is August (8.5 days).
Average UV index in September
Whitemarsh Island, GA
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Whitemarsh Island, GA
- Average cloud cover in September: 30
The months with the most cloud cover are February and December (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in September
Whitemarsh Island, GA
- 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).
Whitemarsh Island, Georgia, USA
Weather forecast for your location
2. Allow the app to use your location