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
The advent of September brings an average high-temperature of a still moderately hot 81.5°F (27.5°C), exhibiting minor difference from the previous month. Surfside Beach, during the nights of September, experiences an average temperature drop to an agreeable 72.1°F (22.3°C).Heat index
During September, the heat index is evaluated at a tropical 87.8°F (31°C). Long-lasting exposure and activity potentially induce a sense of weariness, with the risk of heat cramps.Keep in mind the heat index values are meant for areas in shade and with light wind. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', embodies the combination of air temperature and moisture content to illustrate perceived heat. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Humidity
In September, the average relative humidity is 77%.Rainfall
In Surfside Beach, in September, it is raining for 16.9 days, with typically 4.8" (122mm) of accumulated precipitation. In Surfside Beach, during the entire year, the rain falls for 174.7 days and collects up to 42.13" (1070mm) of precipitation.Snowfall
In Surfside Beach, snow does not fall in March through December.Daylight
In Surfside Beach, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:50 am and sunset at 7:40 pm. On the last day of September, in Surfside Beach, sunrise is at 7:10 am and sunset at 7:01 pm EDT.
Sunshine
In Surfside Beach, South Carolina, the average sunshine in September is 9.4h.UV index
In Surfside Beach, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, a daily UV index of 6 turns into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Frequently asked questions
What are the temperatures in Surfside Beach in September?
What is the average humidity in September in Surfside Beach?
How many days does it rain in September in Surfside Beach?
When it does not snow in Surfside Beach?
What is the average length of the day in September in Surfside Beach?
When are sunrise and sunset in September in Surfside Beach?
How many hours of sunshine does Surfside Beach have in September?
What is the UV index reading in September in Surfside Beach?
Average temperature in September
Surfside Beach, SC
- Average high temperature in September: 81.5°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (54.7°F).
- Average low temperature in September: 72.1°F
The month with the highest average low temperature is July (76.5°F).
The coldest month (with the lowest average low temperature) is January (42.4°F).
Average pressure in September
Surfside Beach, SC
- Average pressure in September: 30"Hg
The months with the highest atmospheric pressure are January and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Surfside Beach, SC
- Average wind speed in September: 9.3mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (8.2mph).
Average humidity in September
Surfside Beach, SC
- Average humidity in September: 77%
The months with the highest relative humidity are May, June, August and December (78%).
The month with the lowest relative humidity is January (74%).
Average rainfall in September
Surfside Beach, SC
- Average rainfall in September: 4.8"
The wettest month (with the highest rainfall) is August (6.77").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days in September
Surfside Beach, SC
- Average rainfall days in September: 16.9 days
The month with the highest number of rainy days is July (22.7 days).
The month with the least rainy days is November (9.6 days).
Average snowfall in September
Surfside Beach, SC
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.35").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Surfside Beach, SC
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.3 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
Surfside Beach, SC
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Surfside Beach, SC
- Average sunshine days in September: 10.8 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (6 days).
Average UV index in September
Surfside Beach, SC
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and February (UV index 3).
Average cloud cover in September
Surfside Beach, SC
- Average cloud cover in September: 30
The months with the most cloud cover are February and December (Cloud cover 41).
The months with the least cloud cover are June and July (Cloud cover 27).
Average visibility in September
Surfside Beach, 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).
Surfside Beach, South Carolina, USA
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