September weather forecast and climate
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
The first month of the autumn, September, is also a hot month in Bradenton, Florida, with average temperature ranging between max 86.9°F (30.5°C) and min 77.4°F (25.2°C).

Temperature

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

Heat index

In September, the average heat index is estimated at a torrid 99.9°F (37.7°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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 'feels like', 'felt air temperature', 'real feel', or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like differences in body mass, height, and shape, wind, pregnancy, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in Bradenton is 75%.

Rainfall

In Bradenton, during 23.5 rainfall days, 4.61" (117mm) of precipitation is typically accumulated. In Bradenton, during the entire year, the rain falls for 183.1 days and collects up to 34.92" (887mm) of precipitation.

Ocean temperature

In Bradenton, Florida, the average water temperature is 84.7°F (29.3°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 Bradenton is 12.3h.

Sunshine

The average sunshine is 9h.

UV index

Months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 7 in September interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. 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 Bradenton?

The average high-temperature, in September, in Bradenton, Florida, is 86.9°F (30.5°C), while the average low-temperature is 77.4°F (25.2°C). In September, the average heat index (a.k.a. 'feels like', 'real feel'), that calculates temperature value influenced by the moisture in the air, is evaluated at 99.9°F (37.7°C).

What is the average humidity in September in Bradenton?

In Bradenton, Florida, the average relative humidity in September is 75%.

How many days does it rain in September in Bradenton?

In Bradenton, in September, it is raining for 23.5 days, with typically 4.61" (117mm) of accumulated precipitation.

What is the water temperature in September in Bradenton?

In September, the average ocean temperature in Bradenton is 84.7°F (29.3°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.

How many hours of daylight does Bradenton have in September?

In September, the average length of the day in Bradenton, Florida, is 12.3h.

How long on average sun shines in September in Bradenton?

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

What is the month with the highest UV index in Bradenton?

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 is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV radiation.
Average temperature in September - Bradenton, FL
  • Average high temperature in September: 30.5°C

The warmest month (with the highest average high temperature) is August (31.4°C).
The month with the lowest average high temperature is January (20.3°C).

  • Average low temperature in September: 25.2°C

The month with the highest average low temperature is August (26.5°C).
The coldest month (with the lowest average low temperature) is January (13.4°C).

Average pressure in September - Bradenton, FL
  • Average pressure in September: 1014.3mbar

The month with the highest atmospheric pressure is January (1020.3mbar).
The month with the lowest atmospheric pressure is September (1014.3mbar).

Average wind speed in September - Bradenton, FL
  • Average wind speed in September: 11.6km/h

The windiest month (with the highest average wind speed) is January (14.9km/h).
The calmest month (with the lowest average wind speed) is July (10.3km/h).

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

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

Average rainfall in September - Bradenton, FL
  • Average rainfall in September: 117mm

The wettest month (with the highest rainfall) is August (163mm).
The driest months (with the least rainfall) are February and November (27mm).

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).
Months with the least rainy days are January, February and November (8.3 days).

Average sea temperature in September - Bradenton, FL
  • Average sea temperature in September: 29.3°C

The best month for swimming (with the highest average sea temperature) is August (30.4°C).
The coldest month (with the lowest average sea temperature) is January (17.8°C).

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

The month with the longest days is June (Average daylight: 13.9h).
The month with the shortest days is December (Average daylight: 10.4h).

  • Average sunshine in September: 9h

The month with the most sunshine is May (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 6.5h).

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).

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

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).

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

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).

Average visibility in September - Bradenton, FL
  • Average visibility in September: 10km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).