September weather forecast and climate
Destin, FL

A beautiful beach city of Destin, Florida
A beautiful beach city of Destin, Florida
September, the first month of the autumn, in Destin, is also a moderately hot month, with average temperature fluctuating between 74.7°F (23.7°C) and 85.8°F (29.9°C).

Temperature

In Destin, the average high-temperature is relatively the same as in August - a moderately hot 85.8°F (29.9°C). In Destin, in September, the average low-temperature is 74.7°F (23.7°C).

Heat index

In September, the average heat index is calculated to a torrid 95.9°F (35.5°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 'felt air temperature', 'apparent temperature', 'real feel', or 'feels like', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (metabolic differences, differences in body mass, height, and shape, wind). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In September, the average relative humidity is 73%.

Rainfall

In September, in Destin, the rain falls for 18.5 days. Throughout September, 3.07" (78mm) of precipitation is accumulated. Throughout the year, in Destin, there are 169.5 rainfall days, and 36.77" (934mm) of precipitation is accumulated.

Snowfall

February through December are months without snowfall.

Ocean temperature

In September, the average ocean temperature in Destin is 83.1°F (28.4°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

The average length of the day in September is 12.3h.

Sunshine

In September, the average sunshine is 9.4h.

UV index

In Destin, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 6 in September transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in September in Destin?

In September, in Destin, Florida, the average high-temperature is 85.8°F (29.9°C), and the average low-temperature is 74.7°F (23.7°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), that combines relative humidity and air temperature, in September is evaluated at 95.9°F (35.5°C).

What is the average humidity in September in Destin?

In September, the average relative humidity is 73%.

How many days does it rain in September in Destin?

In September, in Destin, the rain falls for 18.5 days. Throughout September, 3.07" (78mm) of precipitation is accumulated.

When it does not snow in Destin?

February through December are months without snowfall.

What is the water temperature in September in Destin?

In Destin, Florida, in September, the average water temperature is 83.1°F (28.4°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in September in Destin?

The average length of the day in September in Destin, Florida, is 12.3h.

How long on average sun shines in September in Destin?

In Destin, the average sunshine in September is 9.4h.

How high is the UV index in September in Destin?

The average daily maximum UV index in September in Destin, Florida, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to the UV radiation.
Average temperature in September - Destin, FL
  • Average high temperature in September: 85.8°F

The warmest months (with the highest average high temperature) are July and August (88.3°F).
The month with the lowest average high temperature is January (59.7°F).

  • Average low temperature in September: 74.7°F

The month with the highest average low temperature is August (79.2°F).
The coldest month (with the lowest average low temperature) is January (48°F).

Average pressure in September - Destin, FL
  • Average pressure in September: 29.98"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is August (29.97").

Average wind speed in September - Destin, FL
  • Average wind speed in September: 7.1mph

The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (7mph).

Average humidity in September - Destin, FL
  • Average humidity in September: 73%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (68%).

Average rainfall in September - Destin, FL
  • Average rainfall in September: 3.07"

The wettest month (with the highest rainfall) is August (5.55").
The driest month (with the least rainfall) is May (1.57").

Average rainfall days in September - Destin, FL
  • Average rainfall days in September: 18.5 days

The month with the highest number of rainy days is August (24.5 days).
The month with the least rainy days is November (7.5 days).

Average snowfall in September - Destin, FL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.04").
Months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September - Destin, FL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.1 days).
Months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

Average sea temperature in September - Destin, FL
  • Average sea temperature in September: 83.1°F

The best month for swimming (with the highest average sea temperature) is August (86.2°F).
The coldest month (with the lowest average sea temperature) is February (62.2°F).

Average daylight in September / Average sunshine in September - Destin, FL
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 14.1h).
The month with the shortest days is December (Average daylight: 10.2h).

  • Average sunshine in September: 9.4h

The month with the most sunshine is June (Average sunshine: 11.2h).
Months with the least sunshine are February and December (Average sunshine: 5.5).

Average sunshine days in September - Destin, FL
  • Average sunshine days in September: 8.5 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is August (4.3 days).

Average UV index in September - Destin, FL
  • Average UV index in September: 6

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

Average cloud cover in September - Destin, FL
  • Average cloud cover in September: 25

Months with the most cloud cover are February and December (Cloud cover 40).
The month with the least cloud cover is October (Cloud cover 22).

Average visibility in September - Destin, FL
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).