September weather forecast
Rosemary Beach, FL

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Rosemary Beach, Florida, with an average temperature fluctuating between 75°F (23.9°C) and 85.1°F (29.5°C).

Temperature

As Rosemary Beach steps into September, the average high-temperature is measured at a moderately hot 85.1°F (29.5°C), displaying minor differences from August's 87.6°F (30.9°C). An average minimum temperature of 75°F (23.9°C) is recorded in Rosemary Beach during the month of September.

Heat index

Throughout September, the heat index is evaluated at a very hot 95°F (35°C). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

The average relative humidity in September is 73%.

Rainfall

In September, the rain falls for 18.9 days. Throughout September, 3.5" (89mm) of precipitation is accumulated. Throughout the year, there are 176 rainfall days, and 42.09" (1069mm) of precipitation is accumulated.

Snowfall

February through December are months without snowfall in Rosemary Beach.

Daylight

In September, the average length of the day in Rosemary Beach is 12h and 20min.
On the first day of September, sunrise is at 6:21 am and sunset at 7:06 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 6:30 pm CDT.

Sunshine

The average sunshine in September is 9.4h.

UV index

The average daily maximum UV index in September in Rosemary Beach is 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, the UV index of 6 transforms into the following advice:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
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Frequently asked questions

Is it hot in Rosemary Beach during September?

An average high-temperature, in September, in Rosemary Beach, is 85.1°F (29.5°C) and the average low-temperature is 75°F (23.9°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, in September is evaluated at 95°F (35°C).

What is the average humidity in September in Rosemary Beach?

The average relative humidity in September is 73%.

How many days does it rain in September in Rosemary Beach?

In Rosemary Beach, in September, during 18.9 rainfall days, 3.5" (89mm) of precipitation is typically accumulated.

When it does not snow in Rosemary Beach?

February through December are months without snowfall in Rosemary Beach, Florida.

How many hours of daylight does Rosemary Beach have in September?

The average day length in September is 12h and 20min.

When is the sunrise / sunset in September in Rosemary Beach?

On the first day of September in Rosemary Beach, sunrise is at 6:21 am and sunset at 7:06 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 6:30 pm CDT.

How many hours of sunshine does Rosemary Beach have in September?

In Rosemary Beach, Florida, the average sunshine duration in September is 9.4h.

What is the UV index reading in September in Rosemary Beach?

In September, the average daily maximum UV index in Rosemary Beach is 6. A UV Index estimate of 6 to 7 represents a high health threat 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
Rosemary Beach, FL

Average temperature in September - Rosemary Beach, FL
  • Average high temperature in September: 85.1°F

The warmest month (with the highest average high temperature) is August (87.6°F).
The month with the lowest average high temperature is January (59.9°F).

  • Average low temperature in September: 75°F

The month with the highest average low temperature is August (79.9°F).
The coldest month (with the lowest average low temperature) is January (48.6°F).

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Average pressure in September
Rosemary Beach, FL

Average pressure in September - Rosemary 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, August and September (29.98"Hg).

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Average wind speed in September
Rosemary Beach, FL

Average wind speed in September - Rosemary Beach, FL
  • Average wind speed in September: 7.3mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest months (with the lowest average wind speed) are August and September (7.3mph).

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Average humidity in September
Rosemary Beach, FL

Average humidity in September - Rosemary 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 (70%).

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Average rainfall in September
Rosemary Beach, FL

Average rainfall in September - Rosemary Beach, FL
  • Average rainfall in September: 3.5"

The wettest month (with the highest rainfall) is August (6.61").
The driest month (with the least rainfall) is November (1.97").

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Average rainfall days in September
Rosemary Beach, FL

Average rainfall days in September - Rosemary Beach, FL
  • Average rainfall days in September: 18.9 days

The month with the highest number of rainy days is August (25.4 days).
The month with the least rainy days is November (8.6 days).

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Average snowfall in September
Rosemary Beach, FL

Average snowfall in September - Rosemary Beach, FL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.04").
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
Rosemary Beach, FL

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

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

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Average daylight in September /
Average sunshine in September
Rosemary Beach, FL

Average daylight in September / Average sunshine in September - Rosemary 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 2min

The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

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Average sunshine days in September
Rosemary Beach, FL

Average sunshine days in September - Rosemary Beach, FL
  • Average sunshine days in September: 7.6 days

The months with the most sunshine days are October and November (19.5 days).
The month with the least sunshine days is August (4.3 days).

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Average UV index in September
Rosemary Beach, FL

Average UV index in September - Rosemary 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
Rosemary Beach, FL

Average cloud cover in September - Rosemary Beach, FL
  • Average cloud cover in September: 23

The month with the most cloud cover is December (Cloud cover 38).
The months with the least cloud cover are May and October (Cloud cover 22).

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Average visibility in September
Rosemary Beach, FL

Average visibility in September - Rosemary 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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Rosemary Beach, Florida, USA

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