September weather forecast
Murrells Inlet, SC

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Weather in September

The first month of the autumn, September, is still a warm month in Murrells Inlet, South Carolina, with temperature in the range of an average high of 81.5°F (27.5°C) and an average low of 72.1°F (22.3°C).

Temperature

Murrells Inlet, South Carolina, notes an average high-temperature of a still warm 81.5°F (27.5°C) in September, displaying minor variation from August. During September, the nighttime temperature averages to an agreeable 72.1°F (22.3°C).

Heat index

In September, the average heat index is estimated at a hot 87.8°F (31°C). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.
When referencing the heat index, its values are suitable for shady environments and light breezes. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'real feel', measures the perceived warmth when incorporating the humidity present in the air. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.

Humidity

In September, the average relative humidity is 77%.

Rainfall

In September, the rain falls for 16.9 days. Throughout September, 4.8" (122mm) of precipitation is accumulated. In Murrells Inlet, during the entire year, the rain falls for 174.7 days and collects up to 42.13" (1070mm) of precipitation.

Snowfall

March through December are months without snowfall.

Daylight

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 7:41 pm. On the last day of September, sunrise is at 7:10 am and sunset at 7:01 pm EDT.

Sunshine

In Murrells Inlet, the average sunshine in September is 9.4h.

UV index

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The daily high UV index of 6 in September translates into this advice:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Updated: Aug 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures?

In September, in Murrells Inlet, the average high-temperature is 81.5°F (27.5°C), and the average low-temperature is 72.1°F (22.3°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in September is estimated at 87.8°F (31°C).

What is the average humidity in September?

In Murrells Inlet, the average relative humidity in September is 77%.

How many days does it rain in September?

In Murrells Inlet, in September, it is raining for 16.9 days, with typically 4.8" (122mm) of accumulated precipitation.

When it does not snow?

March through December are months without snowfall.

How many hours of daylight does Murrells Inlet have in September?

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

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:50 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 7:01 pm EDT.

How many hours of sunshine does Murrells Inlet have in September?

In Murrells Inlet, South Carolina, the average sunshine duration in September is 9.4h.

What is the UV index reading in September in Murrells Inlet?

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes 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
Murrells Inlet, SC

Average temperature in September - Murrells Inlet, 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
Murrells Inlet, SC

Average pressure in September - Murrells Inlet, 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
Murrells Inlet, SC

Average wind speed in September - Murrells Inlet, 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
Murrells Inlet, SC

Average humidity in September - Murrells Inlet, 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
Murrells Inlet, SC

Average rainfall in September - Murrells Inlet, 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
Murrells Inlet, SC

Average rainfall days in September - Murrells Inlet, 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
Murrells Inlet, SC

Average snowfall in September - Murrells Inlet, 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
Murrells Inlet, SC

Average snowfall days in September - Murrells Inlet, 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
Murrells Inlet, SC

Average daylight in September / Average sunshine in September - Murrells Inlet, 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
Murrells Inlet, SC

Average sunshine days in September - Murrells Inlet, 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
Murrells Inlet, SC

Average UV index in September - Murrells Inlet, 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
Murrells Inlet, SC

Average cloud cover in September - Murrells Inlet, 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
Murrells Inlet, SC

Average visibility in September - Murrells Inlet, 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).

Murrells Inlet, South Carolina, USA

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