September weather forecastAventura, FL
September
Weather in September
The first month of the autumn, September, is still a tropical month in Aventura, Florida, with an average temperature ranging between max 86.2°F (30.1°C) and min 81°F (27.2°C).Temperature
The start of September marks an average high-temperature of a still hot 86.2°F (30.1°C), hardly distinguishable from the conditions in August. An average temperature of 81°F (27.2°C) is logged during the nights of September, a small step down from daytime highs.Heat index
During September, the heat index is calculated to be a sweltering 96.8°F (36°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.Be informed that the heat index values are oriented around shady conditions and gentle breezes. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.
Humidity
The average relative humidity in September is 73%.Rainfall
In Aventura, in September, it is raining for 21.7 days, with typically 1.1" (28mm) of accumulated precipitation. In Aventura, during the entire year, the rain falls for 157 days and collects up to 11.34" (288mm) of precipitation.Snowfall
The only month with snowfall in Aventura is September. The month with the most snowfall is September, when snow falls for 0.1 days and typically aggregates up to 0.04" (1mm) of snow.Ocean temperature
In September, the average ocean temperature is 85.5°F (29.7°C).Note: Water activities including swimming and diving are pleasurable in temperatures between 77°F (25°C) and 84.2°F (29°C), ensuring comfort and enjoyment for extended time frames.
Daylight
The average length of the day in September is 12h and 18min.On the first day of the month, sunrise is at 7:01 am and sunset at 7:39 pm. On the last day of September, sunrise is at 7:12 am and sunset at 7:07 pm EDT.
Sunshine
The average sunshine in September in Aventura, Florida, is 9h.UV index
The months with the highest UV index in Aventura are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 7 during September leads to these instructions:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are September and October (29.95"Hg).
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").
The 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).
The 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: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
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
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 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
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).
