September weather forecast
Bradenton, FL

Beautiful clear water and white sand of the busy Coquina Beach in Brandenton, Florida
Beautiful clear water and white sand of the busy Coquina Beach in Brandenton, Florida

Weather in September

September, the first month of the autumn in Bradenton, is still a tropical month, with an average temperature fluctuating between 86.9°F (30.5°C) and 77.4°F (25.2°C).

Temperature

In September, the average high-temperature is almost the same as in August - a still tropical 86.9°F (30.5°C). In Bradenton, in September, the average low-temperature is 77.4°F (25.2°C).

Heat index

In September, the average heat index is computed to be a very hot 99.9°F (37.7°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased 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 calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like clothing, pregnancy, metabolic differences, 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. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. 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 75%.

Rainfall

In Bradenton, it is raining for 23.5 days, with typically 4.61" (117mm) of accumulated precipitation. Throughout the year, there are 183.1 rainfall days, and 34.92" (887mm) of precipitation is accumulated.

Ocean temperature

In September, the average ocean temperature is 84.7°F (29.3°C).
Note: 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.

Daylight

The average length of the day in September is 12h and 19min.
On the first day of September, sunrise is at 7:09 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:17 pm EDT.

Sunshine

In Bradenton, the average sunshine in September is 9h.

UV index

The months with the highest UV index in Bradenton are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 7 in September interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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 Bradenton?

In September, in Bradenton, Florida, the average high-temperature is 86.9°F (30.5°C), and the average low-temperature is 77.4°F (25.2°C). The average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, in September is computed to be 99.9°F (37.7°C).

What is the average humidity in September in Bradenton?

The average relative humidity in September in Bradenton is 75%.

How much does it rain in Bradenton in September?

In Bradenton, Florida, in September, during 23.5 rainfall days, 4.61" (117mm) of precipitation is typically accumulated.

What is the ocean temperature in September in Bradenton?

In September, the average ocean temperature in Bradenton, Florida, is 84.7°F (29.3°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Bradenton have in September?

In Bradenton, Florida, the average day length in September is 12h and 19min.

When is the sunrise / sunset in September in Bradenton?

On the first day of September in Bradenton, sunrise is at 7:09 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:17 pm EDT.

How many hours of sunshine does Bradenton have in September?

In Bradenton, the average sunshine duration in September is 9h.

When is the highest UV index in Bradenton?

The months with the highest UV index in Bradenton are May through September, with an average maximum UV index of 7.

How high is the UV index in September in Bradenton?

The average daily maximum UV index in September in Bradenton, Florida, is 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation.

Average temperature in September
Bradenton, FL

Average temperature in September - Bradenton, FL
  • Average high temperature in September: 86.9°F

The warmest month (with the highest average high temperature) is August (88.5°F).
The month with the lowest average high temperature is January (68.5°F).

  • Average low temperature in September: 77.4°F

The month with the highest average low temperature is August (79.7°F).
The coldest month (with the lowest average low temperature) is January (56.1°F).

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Average pressure in September
Bradenton, FL

Average pressure in September - Bradenton, FL
  • Average pressure in September: 29.95"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).

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Average wind speed in September
Bradenton, FL

Average wind speed in September - Bradenton, FL
  • Average wind speed in September: 7.2mph

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).

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Average humidity in September
Bradenton, FL

Average humidity in September - Bradenton, FL
  • Average humidity in September: 75%

The month with the highest relative humidity is December (76%).
The months with the lowest relative humidity are March, April and May (72%).

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Average rainfall in September
Bradenton, FL

Average rainfall in September - Bradenton, FL
  • Average rainfall in September: 4.61"

The wettest month (with the highest rainfall) is August (6.42").
The driest months (with the least rainfall) are February and November (1.06").

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Average rainfall days in September
Bradenton, FL

Average rainfall days in September - Bradenton, FL
  • Average rainfall days in September: 23.5 days

The month with the highest number of rainy days is August (26.8 days).
The months with the least rainy days are January, February and November (8.3 days).

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Average sea temperature in September
Bradenton, FL

Average sea temperature in September - Bradenton, FL
  • Average sea temperature in September: 84.8°F

The best month for swimming (with the highest average sea temperature) is August (86.7°F).
The coldest month (with the lowest average sea temperature) is January (64.1°F).

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Average daylight in September /
Average sunshine in September
Bradenton, FL

Average daylight in September / Average sunshine in September - Bradenton, FL
  • Average daylight in September: 12h and 19min

The month with the longest days is June (Average daylight: 13h and 51min).
The month with the shortest days is December (Average daylight: 10h and 26min).

  • Average sunshine in September: 9h and 0min

The month with the most sunshine is May (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

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Average sunshine days in September
Bradenton, FL

Average sunshine days in September - Bradenton, FL
  • Average sunshine days in September: 4.5 days

The month with the most sunshine days is January (21.1 days).
The month with the least sunshine days is August (2.5 days).

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Average UV index in September
Bradenton, FL

Average UV index in September - Bradenton, FL
  • Average UV index in September: 7

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

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Average cloud cover in September
Bradenton, FL

Average cloud cover in September - Bradenton, FL
  • Average cloud cover in September: 28

The months with the most cloud cover are January and December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 22).

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Average visibility in September
Bradenton, FL

Average visibility in September - Bradenton, 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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