September weather forecast
Gulfport, MS

Inlets in the Gulfport, Mississippi, with a clear far view of the rest of the seaside city
Inlets in the Gulfport, Mississippi, with a clear far view of the rest of the seaside city

Weather in September

The first month of the autumn, September, is still a tropical month in Gulfport, Mississippi, with an average temperature varying between 86.5°F (30.3°C) and 74.3°F (23.5°C).

Temperature

In Gulfport, Mississippi, the average high-temperature in September is essentially the same as in August - a still tropical 86.5°F (30.3°C). The average low-temperature, is 74.3°F (23.5°C).

Heat index

The average heat index in September is evaluated at a sweltering 98.6°F (37°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like wind, pregnancy, clothing, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in September is 74%.

Rainfall

In Gulfport, during September, the rain falls for 19.6 days and regularly aggregates up to 4.06" (103mm) of precipitation. Throughout the year, there are 184.5 rainfall days, and 43.62" (1108mm) of precipitation is accumulated.

Snowfall

In Gulfport, snow does not fall in February through December.

Ocean temperature

In Gulfport, the average water temperature is 82.9°F (28.3°C).
Note: Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In September, the average length of the day in Gulfport is 12h and 20min.
On the first day of the month, sunrise is at 6:33 am and sunset at 7:19 pm. On the last day of September, sunrise is at 6:49 am and sunset at 6:43 pm CDT.

Sunshine

The average sunshine in September in Gulfport is 10h.

UV index

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.
Note: The daily maximum UV index of 6 in September interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in September in Gulfport?

In September, the average high-temperature is 86.5°F (30.3°C), and the average low-temperature is 74.3°F (23.5°C). in September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 98.6°F (37°C).

What is the average humidity in September in Gulfport?

In September, the average relative humidity in Gulfport is 74%.

How many days does it rain in September in Gulfport?

In Gulfport, Mississippi, in September, it is raining for 19.6 days, with typically 4.06" (103mm) of accumulated precipitation.

When it does not snow in Gulfport?

In Gulfport, snow does not fall in February through December.

What is the water temperature in September in Gulfport?

In Gulfport, the average seawater temperature in September is 82.9°F (28.3°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Gulfport have in September?

In September, the average day length in Gulfport, Mississippi, is 12h and 20min.

When is the sunrise / sunset in September in Gulfport?

In September, on the first day of the month, sunrise is at 6:33 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:43 pm CDT.

How many hours of sunshine does Gulfport have in September?

In September, the average sunshine duration in Gulfport, Mississippi, is 10h.

How high is the UV index in September in Gulfport?

In September, the average daily maximum UV index in Gulfport, Mississippi, is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Gulfport, MS

Average temperature in September - Gulfport, MS
  • Average high temperature in September: 86.5°F

The warmest month (with the highest average high temperature) is July (89.8°F).
The month with the lowest average high temperature is January (59.2°F).

  • Average low temperature in September: 74.3°F

The month with the highest average low temperature is August (77.7°F).
The coldest month (with the lowest average low temperature) is January (46°F).

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Average pressure in September
Gulfport, MS

Average pressure in September - Gulfport, MS
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).

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Average wind speed in September
Gulfport, MS

Average wind speed in September - Gulfport, MS
  • Average wind speed in September: 6.3mph

The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

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Average humidity in September
Gulfport, MS

Average humidity in September - Gulfport, MS
  • Average humidity in September: 74%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in September
Gulfport, MS

Average rainfall in September - Gulfport, MS
  • Average rainfall in September: 4.06"

The wettest month (with the highest rainfall) is August (6.89").
The driest month (with the least rainfall) is November (2.09").

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Average rainfall days in September
Gulfport, MS

Average rainfall days in September - Gulfport, MS
  • Average rainfall days in September: 19.6 days

The month with the highest number of rainy days is August (24.3 days).
The month with the least rainy days is November (8.6 days).

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Average snowfall in September
Gulfport, MS

Average snowfall in September - Gulfport, MS
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.31").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in September
Gulfport, MS

Average snowfall days in September - Gulfport, MS
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

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Average sea temperature in September
Gulfport, MS

Average sea temperature in September - Gulfport, MS
  • Average sea temperature in September: 83°F

The best month for swimming (with the highest average sea temperature) is August (86.5°F).
The coldest month (with the lowest average sea temperature) is January (56.8°F).

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Average daylight in September /
Average sunshine in September
Gulfport, MS

Average daylight in September / Average sunshine in September - Gulfport, MS
  • Average daylight in September: 12h and 20min

The month with the longest days is June (Average daylight: 14h and 5min).
The month with the shortest days is December (Average daylight: 10h and 14min).

  • Average sunshine in September: 10h and 0min

The month with the most sunshine is June (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).

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Average sunshine days in September
Gulfport, MS

Average sunshine days in September - Gulfport, MS
  • Average sunshine days in September: 8.5 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is July (4.4 days).

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Average UV index in September
Gulfport, MS

Average UV index in September - Gulfport, MS
  • Average UV index in September: 6

The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 4).

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Average cloud cover in September
Gulfport, MS

Average cloud cover in September - Gulfport, MS
  • Average cloud cover in September: 25

The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 23).

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Average visibility in September
Gulfport, MS

Average visibility in September - Gulfport, MS
  • 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).

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