September weather forecast
Wildwood, SC

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Wildwood, South Carolina, with an average temperature ranging between max 85.1°F (29.5°C) and min 70.9°F (21.6°C).

Temperature

Wildwood experiences a minor change to a moderately hot 85.1°F (29.5°C) in average high-temperature during September, closely reflecting August. During the month of September, an average temperature of 70.9°F (21.6°C) is noted during the nights.

Heat index

September's mean heat index is calculated to be a sweltering 95°F (35°C). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
In reference to the heat index, it's for places in shade and with a slight wind. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

The average relative humidity in September is 75%.

Rainfall

In Wildwood, in September, during 16.5 rainfall days, 4.02" (102mm) of precipitation is typically accumulated. In Wildwood, during the entire year, the rain falls for 172.6 days and collects up to 39.13" (994mm) of precipitation.

Snowfall

March through November are months without snowfall.

Daylight

In Wildwood, the average length of the day in September is 12h and 22min.
On the first day of September, sunrise is at 6:55 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 7:05 pm EDT.

Sunshine

In September, the average sunshine is 8.9h.

UV index

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 6 in September interprets into the following advice:
Ward off overexposure. Defence against solar harm is crucial. 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. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

The high-temperature, in September, in Wildwood, records 85.1°F (29.5°C), while the low-temperature is 70.9°F (21.6°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, is calculated to be 95°F (35°C).

What is the average humidity in September?

In September, the average relative humidity is 75%.

How many days does it rain in September?

In Wildwood, in September, during 16.5 rainfall days, 4.02" (102mm) of precipitation is typically accumulated.

When it does not snow?

March through November are months without snowfall.

What is the average length of the day in September?

In Wildwood, the average day length in September is 12h and 22min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:55 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 7:05 pm EDT.

How many hours of sunshine does Wildwood have in September?

In September, the average sunshine duration is 8.9h.

What is the UV index reading in September?

In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Wildwood, SC

Average temperature in September - Wildwood, SC
  • Average high temperature in September: 85.1°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 (56.8°F).

  • Average low temperature in September: 70.9°F

The month with the highest average low temperature is July (75.7°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

Average pressure in September
Wildwood, SC

Average pressure in September - Wildwood, SC
  • Average pressure in September: 30"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
Wildwood, SC

Average wind speed in September - Wildwood, SC
  • Average wind speed in September: 6.5mph

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

Average humidity in September
Wildwood, SC

Average humidity in September - Wildwood, SC
  • Average humidity in September: 75%

The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are January and March (72%).

Average rainfall in September
Wildwood, SC

Average rainfall in September - Wildwood, SC
  • Average rainfall in September: 4.02"

The wettest month (with the highest rainfall) is August (6.22").
The driest month (with the least rainfall) is January (1.46").

Average rainfall days in September
Wildwood, SC

Average rainfall days in September - Wildwood, SC
  • Average rainfall days in September: 16.5 days

The month with the highest number of rainy days is August (23.4 days).
The month with the least rainy days is November (8.2 days).

Average snowfall in September
Wildwood, SC

Average snowfall in September - Wildwood, SC
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.28").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Wildwood, SC

Average snowfall days in September - Wildwood, 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 April, May, June, July, August, September, October and November (0 days).

Average daylight in September /
Average sunshine in September
Wildwood, SC

Average daylight in September / Average sunshine in September - Wildwood, 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: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

Average sunshine days in September
Wildwood, SC

Average sunshine days in September - Wildwood, SC
  • Average sunshine days in September: 11.6 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is August (5.8 days).

Average UV index in September
Wildwood, SC

Average UV index in September - Wildwood, SC
  • Average UV index in September: 6

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).

Average cloud cover in September
Wildwood, SC

Average cloud cover in September - Wildwood, SC
  • Average cloud cover in September: 31

The month with the most cloud cover is December (Cloud cover 41).
The months with the least cloud cover are June and July (Cloud cover 27).

Average visibility in September
Wildwood, SC

Average visibility in September - Wildwood, 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).

Wildwood, South Carolina, USA

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