September weather forecast
Butler Beach, FL

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Weather in September

September, the first month of the autumn in Butler Beach, is also a hot month, with an average temperature ranging between min 75.9°F (24.4°C) and max 86°F (30°C).

Temperature

September's advent notes a subtle adjustment in average high-temperature to a still tropical 86°F (30°C) from August. The low-temperature average for Butler Beach during September stands at a moderately hot 75.9°F (24.4°C).

Heat index

September's heat index is calculated to be a fiery hot 98.6°F (37°C). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. 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 relevant to children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

In September, the average relative humidity is 76%.

Rainfall

In Butler Beach, Florida, during September, the rain falls for 19.8 days and regularly aggregates up to 4.09" (104mm) of precipitation. In Butler Beach, during the entire year, the rain falls for 186.8 days and collects up to 30.2" (767mm) of precipitation.

Snowfall

February through November are months without snowfall.

Ocean temperature

In Butler Beach, Florida, in September, the average water temperature is 83.1°F (28.4°C).
Note: Water temperature between 77°F (25°C) and 84.2°F (29°C) provides warmth and pleasure, making water activities enjoyable for lengthened periods without feeling uncomfortable.

Daylight

The average length of the day in September is 12h and 20min.
On the first day of September, sunrise is at 7:02 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:11 pm EDT.

Sunshine

The average sunshine in September is 8.6h.

UV index

In Butler Beach, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: In September, the maximum UV index of 6 transforms into these recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Stay alert! Reflective properties of sand and water amplify the Sun's UV radiation.
Updated: Jul 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during September?

In September, in Butler Beach, the average high-temperature is 86°F (30°C), and the average low-temperature is 75.9°F (24.4°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in September is calculated to be 98.6°F (37°C).

What is the average humidity in September?

In September, the average relative humidity is 76%.

How much does it rain in September?

In September, the rain falls for 19.8 days. Throughout September, 4.09" (104mm) of precipitation is accumulated.

When it does not snow?

In Butler Beach, snow does not fall in February through November.

What is the water temperature in September?

In Butler Beach, the average seawater temperature in September is 83.1°F (28.4°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.

What is the average length of the day in September?

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

When are sunrise and sunset in September in Butler Beach?

On the first day of September, sunrise is at 7:02 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:11 pm EDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.6h.

What is the UV index intensity in September?

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health 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
Butler Beach, FL

Average temperature in September - Butler Beach, FL
  • Average high temperature in September: 86°F

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (64°F).

  • Average low temperature in September: 75.9°F

The month with the highest average low temperature is August (77.5°F).
The coldest month (with the lowest average low temperature) is January (51.4°F).

Average pressure in September
Butler Beach, FL

Average pressure in September - Butler Beach, FL
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.98"Hg).

Average wind speed in September
Butler Beach, FL

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

The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

Average humidity in September
Butler Beach, FL

Average humidity in September - Butler Beach, FL
  • Average humidity in September: 76%

The months with the highest relative humidity are July, August and December (77%).
The month with the lowest relative humidity is March (71%).

Average rainfall in September
Butler Beach, FL

Average rainfall in September - Butler Beach, FL
  • Average rainfall in September: 4.09"

The wettest month (with the highest rainfall) is August (4.33").
The driest month (with the least rainfall) is March (1.18").

Average rainfall days in September
Butler Beach, FL

Average rainfall days in September - Butler Beach, FL
  • Average rainfall days in September: 19.8 days

The month with the highest number of rainy days is August (24.8 days).
The month with the least rainy days is February (10.3 days).

Average snowfall days in September
Butler Beach, FL

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

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

Average sea temperature in September
Butler Beach, FL

Average sea temperature in September - Butler Beach, FL
  • Average sea temperature in September: 83.2°F

The best month for swimming (with the highest average sea temperature) is August (83.8°F).
The coldest months (with the lowest average sea temperature) are January and February (64.3°F).

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

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

The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

Average sunshine days in September
Butler Beach, FL

Average sunshine days in September - Butler Beach, FL
  • Average sunshine days in September: 6.8 days

The month with the most sunshine days is March (17.9 days).
The month with the least sunshine days is August (4.4 days).

Average UV index in September
Butler Beach, FL

Average UV index in September - Butler 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 month with the lowest UV index is January (UV index 4).

Average cloud cover in September
Butler Beach, FL

Average cloud cover in September - Butler Beach, FL
  • Average cloud cover in September: 32

The month with the most cloud cover is December (Cloud cover 38).
The month with the least cloud cover is May (Cloud cover 26).

Average visibility in September
Butler Beach, FL

Average visibility in September - Butler 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).

Butler Beach, Florida, USA

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