September weather forecast and climate
Hialeah, FL

Weather in September

September, the first month of the autumn, in Hialeah, is still a tropical month, with temperature in the range of an average high of 87.1°F (30.6°C) and an average low of 79.9°F (26.6°C).

Temperature

In September, the average high-temperature is almost the same as in August - a still tropical 87.1°F (30.6°C). In Hialeah, Florida, in September, the average low-temperature is 79.9°F (26.6°C).

Heat index

The average heat index is evaluated at a very hot 98.8°F (37.1°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
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', 'feels like', or 'real feel', 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 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. 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

In September, the average relative humidity in Hialeah is 72%.

Rainfall

In Hialeah, Florida,, during 13.2 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. Throughout the year, in Hialeah, Florida, there are 102.1 rainfall days, and 7.01" (178mm) of precipitation is accumulated.

Daylight

The average length of the day in September is 12.3h.

Sunshine

In Hialeah, the average sunshine in September is 9.1h.

UV index

April through September, with an average maximum UV index of 7, are months with the highest UV index in Hialeah, Florida. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 7 in September interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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.
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FAQ

What is the temperature in September in Hialeah?

The average high-temperature, in September, is 87.1°F (30.6°C), while the average low-temperature is 79.9°F (26.6°C). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 98.8°F (37.1°C).

What is the average humidity in September in Hialeah?

The average relative humidity in September is 72%.

How much does it rain in Hialeah in September?

In Hialeah, in September, during 13.2 rainfall days, 0.51" (13mm) of precipitation is typically accumulated.

How many hours of daylight does Hialeah have in September?

The average length of the day in September in Hialeah is 12.3h.

How long on average sun shines in September in Hialeah?

In September, the average sunshine is 9.1h.

What are the months with the highest UV index in Hialeah?

Months with the highest UV index are April through September, with an average maximum UV index of 7.

What is the UV index intensity in September in Hialeah?

In Hialeah, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation.

Average temperature in September
Hialeah, FL

Average temperature in September - Hialeah, FL
  • Average high temperature in September: 87.1°F

The warmest month (with the highest average high temperature) is August (89.1°F).
The month with the lowest average high temperature is January (73.6°F).

  • Average low temperature in September: 79.9°F

The month with the highest average low temperature is August (82°F).
The coldest month (with the lowest average low temperature) is January (63.1°F).

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Average pressure in September
Hialeah, FL

Average pressure in September - Hialeah, 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").

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Average wind speed in September
Hialeah, FL

Average wind speed in September - Hialeah, FL
  • Average wind speed in September: 7.4mph

The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).

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Average humidity in September
Hialeah, FL

Average humidity in September - Hialeah, FL
  • Average humidity in September: 72%

The month with the highest relative humidity is December (74%).
The month with the lowest relative humidity is March (68%).

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Average rainfall in September
Hialeah, FL

Average rainfall in September - Hialeah, FL
  • Average rainfall in September: 0.51"

The wettest month (with the highest rainfall) is August (1.22").
The driest month (with the least rainfall) is January (0.2").

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Average rainfall days in September
Hialeah, FL

Average rainfall days in September - Hialeah, FL
  • Average rainfall days in September: 13.2 days

The month with the highest number of rainy days is August (13.6 days).
The month with the least rainy days is January (4.4 days).

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

Average daylight in September / Average sunshine in September - Hialeah, 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: 9.1h

The month with the most sunshine is July (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 6.4h).

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Average sunshine days in September
Hialeah, FL

Average sunshine days in September - Hialeah, FL
  • Average sunshine days in September: 11 days

The month with the most sunshine days is January (24.9 days).
The month with the least sunshine days is July (10.4 days).

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Average UV index in September
Hialeah, FL

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

Months with the highest UV index are April, May, June, July, August and September (UV index 7).
Months with the lowest UV index are January and December (UV index 5).

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Average cloud cover in September
Hialeah, FL

Average cloud cover in September - Hialeah, FL
  • Average cloud cover in September: 29

The month with the most cloud cover is October (Cloud cover 34).
Months with the least cloud cover are April and July (Cloud cover 26).

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Average visibility in September
Hialeah, FL

Average visibility in September - Hialeah, 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).

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