September weather forecast
Fort Walton Beach, FL

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The vast Fort Walton Beach in Florida, with a high view of the city and part of the river
The vast Fort Walton Beach in Florida, with a high view of the city and part of the river

Weather in September

The first month of the autumn, September, is also a hot month in Fort Walton Beach, Florida, with an average temperature ranging between min 74.5°F (23.6°C) and max 86.2°F (30.1°C).

Temperature

September's weather records an average high-temperature of a still tropical 86.2°F (30.1°C), showing little deviation from August. During September, Fort Walton Beach experiences an average low-temperature of 74.5°F (23.6°C) at night.

Heat index

In September, the average heat index is calculated to be a sweltering 96.8°F (36°C). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an estimation of the warmth sensation when considering humidity levels. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

In September, the average relative humidity is 73%.

Rainfall

In Fort Walton Beach, in September, it is raining for 18.1 days, with typically 3.03" (77mm) of accumulated precipitation. In Fort Walton Beach, during the entire year, the rain falls for 172.9 days and collects up to 38.03" (966mm) of precipitation.

Snowfall

In Fort Walton Beach, Florida, snow does not fall in March through December.

Ocean temperature

In September, the average ocean temperature in Fort Walton Beach is 83.3°F (28.5°C).
Note: Water temperatures ranging between 77°F (25°C) and 84.2°F (29°C) are regarded as very warm, making swimming, diving, and similar water activities pleasurable for extended periods.

Daylight

The average length of the day in September is 12h and 20min.
On the first day of September, sunrise is at 6:23 am and sunset at 7:08 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:32 pm CDT.

Sunshine

In September, the average sunshine in Fort Walton Beach is 9.5h.

UV index

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. 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. Enhance your sun protection with tightly woven, yet airy clothing. Attention! The combination of sand and water reflections enhances UV ray intensity.
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Frequently asked questions

How hot does it get in Fort Walton Beach in September?

In Fort Walton Beach, 86.2°F (30.1°C) is the average high-temperature and 74.5°F (23.6°C) is the average low-temperature during September. In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 96.8°F (36°C).

What is the average humidity in September in Fort Walton Beach?

In Fort Walton Beach, Florida, the average relative humidity in September is 73%.

How much does it rain in Fort Walton Beach in September?

In Fort Walton Beach, Florida, in September, it is raining for 18.1 days, with typically 3.03" (77mm) of accumulated precipitation.

When it does not snow in Fort Walton Beach?

In Fort Walton Beach, snow does not fall in March through December.

What is the water temperature in September in Fort Walton Beach?

In Fort Walton Beach, Florida, the average seawater temperature in September is 83.3°F (28.5°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.

How many hours of daylight does Fort Walton Beach have in September?

In September, the average day length in Fort Walton Beach is 12h and 20min.

When is the sunrise / sunset in September in Fort Walton Beach?

On the first day of September in Fort Walton Beach, Florida, sunrise is at 6:23 am and sunset at 7:08 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:32 pm CDT.

How long on average sun shines in September in Fort Walton Beach?

In Fort Walton Beach, the average sunshine duration in September is 9.5h.

How high is the UV index in September in Fort Walton Beach?

In Fort Walton Beach, Florida, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Fort Walton Beach, FL

Average temperature in September - Fort Walton Beach, FL
  • Average high temperature in September: 86.2°F

The warmest month (with the highest average high temperature) is August (89.1°F).
The month with the lowest average high temperature is January (59.5°F).

  • Average low temperature in September: 74.5°F

The month with the highest average low temperature is August (79°F).
The coldest month (with the lowest average low temperature) is January (47.1°F).

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Average pressure in September
Fort Walton Beach, FL

Average pressure in September - Fort Walton Beach, FL
  • 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
Fort Walton Beach, FL

Average wind speed in September - Fort Walton Beach, FL
  • Average wind speed in September: 6.8mph

The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

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Average humidity in September
Fort Walton Beach, FL

Average humidity in September - Fort Walton Beach, 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%).

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Average rainfall in September
Fort Walton Beach, FL

Average rainfall in September - Fort Walton Beach, FL
  • Average rainfall in September: 3.03"

The wettest month (with the highest rainfall) is August (5.24").
The driest month (with the least rainfall) is May (1.85").

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Average rainfall days in September
Fort Walton Beach, FL

Average rainfall days in September - Fort Walton Beach, FL
  • Average rainfall days in September: 18.1 days

The month with the highest number of rainy days is August (25 days).
The month with the least rainy days is November (8 days).

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Average snowfall days in September
Fort Walton Beach, FL

Average snowfall days in September - Fort Walton Beach, FL
  • Average snowfall days in September: 0 days

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

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Average sea temperature in September
Fort Walton Beach, FL

Average sea temperature in September - Fort Walton Beach, FL
  • Average sea temperature in September: 83.3°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 (62.3°F).

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Average daylight in September /
Average sunshine in September
Fort Walton Beach, FL

Average daylight in September / Average sunshine in September - Fort Walton Beach, FL
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in September: 9h and 3min

The months with the most sunshine are May and June (Average sunshine: 11h and 6min).
The months with the least sunshine are February and December (Average sunshine: 5h and 30min).

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Average sunshine days in September
Fort Walton Beach, FL

Average sunshine days in September - Fort Walton Beach, FL
  • Average sunshine days in September: 8.6 days

The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is August (4.1 days).

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Average UV index in September
Fort Walton Beach, FL

Average UV index in September - Fort Walton Beach, FL
  • 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, February and December (UV index 4).

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Average cloud cover in September
Fort Walton Beach, FL

Average cloud cover in September - Fort Walton Beach, FL
  • Average cloud cover in September: 25

The 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).

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Average visibility in September
Fort Walton Beach, FL

Average visibility in September - Fort Walton Beach, FL
  • 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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Fort Walton Beach, Florida, USA

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