September weather forecast and climate
Aventura, FL

September, the first month of the autumn, in Aventura, is still a hot month, with average temperature ranging between max 86.2°F (30.1°C) and min 81°F (27.2°C).

Temperature

In Aventura, the average high-temperature is practically the same as in August - a still tropical 86.2°F (30.1°C). In Aventura, in September, the average low-temperature is 81°F (27.2°C).

Heat index

The average heat index in September is evaluated at a torrid 96.8°F (36°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. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'apparent temperature', or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like activity, metabolic differences, differences in body mass, height, and shape, and pregnancy affect individual temperature impact. 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 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.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. 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 Aventura is 73%.

Rainfall

In Aventura, Florida, during 21.7 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. In Aventura, during the entire year, the rain falls for 157 days and collects up to 11.34" (288mm) of precipitation.

Snowfall

September is the only month when snow falls. The month with the most snowfall in Aventura is September when snow falls for 0.1 days and typically aggregates up to 0.04" (1mm) of snow.

Ocean temperature

In Aventura, the average seawater temperature is 85.5°F (29.7°C).
Note: 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.

Daylight

In Aventura, the average length of the day is 12.3h.

Sunshine

In September, the average sunshine is 9h.

UV index

Months with the highest UV index in Aventura are May through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 7 interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in September in Aventura?

In September, the average high-temperature is 86.2°F (30.1°C), and the average low-temperature is 81°F (27.2°C). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), that combines both air temperature and relative humidity, is appraised at 96.8°F (36°C).

What is the average humidity in September in Aventura?

In Aventura, Florida, the average relative humidity in September is 73%.

How much does it rain in Aventura in September?

In Aventura, Florida, during September, the rain falls for 21.7 days and regularly aggregates up to 1.1" (28mm) of precipitation.

When does it start snowing in Aventura?

September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow.

When does it snow the most in Aventura?

September is the month with the most snowfall in Aventura, Florida. Snow falls for 0.1 days and accumulates 0.04" (1mm) of snow.

How warm is the water in September in Aventura?

In September, the average ocean temperature is 85.5°F (29.7°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.

What is the average length of the day in September in Aventura?

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

How long on average sun shines in September in Aventura?

In September, the average sunshine is 9h.

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

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

How high is the UV index in September in Aventura?

In September, the average daily maximum UV index in Aventura, Florida, is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in September - Aventura, FL
  • Average high temperature in September: 86.2°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 (73°F).

  • Average low temperature in September: 81°F

The month with the highest average low temperature is August (82°F).
The coldest month (with the lowest average low temperature) is January (64°F).

Average pressure in September - Aventura, FL
  • Average pressure in September: 29.95"

The month with the highest atmospheric pressure is January (30.11").
Months with the lowest atmospheric pressure are September and October (29.95").

Average wind speed in September - Aventura, FL
  • Average wind speed in September: 8.1mph

The windiest month (with the highest average wind speed) is March (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).

Average humidity in September - Aventura, FL
  • Average humidity in September: 73%

The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is March (69%).

Average rainfall in September - Aventura, FL
  • Average rainfall in September: 1.1"

The wettest month (with the highest rainfall) is August (1.97").
The driest month (with the least rainfall) is January (0.31").

Average rainfall days in September - Aventura, FL
  • Average rainfall days in September: 21.7 days

The month with the highest number of rainy days is September (21.7 days).
The month with the least rainy days is February (6.8 days).

Average snowfall in September - Aventura, FL
  • Average snowfall in September: 0.04"

The month with the highest snowfall is September (0.04").
Months with the least snowfall are January, February, March, April, May, June, July, August, October, November and December (0").

Average snowfall days in September - Aventura, FL
  • Average snowfall days in September: 0.1 days

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

Average sea temperature in September - Aventura, FL
  • Average sea temperature in September: 85.4°F

The best month for swimming (with the highest average sea temperature) is August (86.5°F).
The coldest month (with the lowest average sea temperature) is February (74°F).

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

The month with the longest days is June (Average daylight: 13.7h).
The month with the shortest days is December (Average daylight: 10.5h).

  • Average sunshine in September: 9h

The month with the most sunshine is July (Average sunshine: 11h).
The month with the least sunshine is December (Average sunshine: 6.3h).

Average sunshine days in September - Aventura, FL
  • Average sunshine days in September: 4.4 days

The month with the most sunshine days is March (20.3 days).
The month with the least sunshine days is September (4.4 days).

Average UV index in September - Aventura, 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 5).

Average cloud cover in September - Aventura, FL
  • Average cloud cover in September: 30

The month with the most cloud cover is October (Cloud cover 35).
The month with the least cloud cover is April (Cloud cover 27).

Average visibility in September - Aventura, FL
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).