September weather forecast and climate
Coral Gables, FL

The iconic Coral Gables City Hall in Miracle Mile, Florida
The iconic Coral Gables City Hall in Miracle Mile, Florida

Weather in September

September, the first month of the autumn, in Coral Gables, is still a hot month, with average temperature ranging between min 80.6°F (27°C) and max 86.9°F (30.5°C).

Temperature

In Coral Gables, the average high-temperature in September is practically the same as in August - a still hot 86.9°F (30.5°C). In September, in Coral Gables, the average low-temperature is 80.6°F (27°C).

Heat index

In September, the average heat index is estimated at a torrid 98.2°F (36.8°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 the 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 wind, clothing, metabolic differences, and activity influence one's weather impression. 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, as evaporated sweat carries heat away from the body. 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. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

In Coral Gables, Florida, the average relative humidity is 72%.

Rainfall

In Coral Gables, in September, during 18.5 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. In Coral Gables, during the entire year, the rain falls for 144.3 days and collects up to 10.55" (268mm) of precipitation.

Ocean temperature

In September, the average ocean 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

The average length of the day in Coral Gables is 12.3h.

Sunshine

In Coral Gables, the average sunshine is 9.1h.

UV index

May through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from the exposure to the Sun's UV radiation for average individuals.
Note: In September, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the temperature in September in Coral Gables?

The average high-temperature, in September, is 86.9°F (30.5°C), while the average low-temperature is 80.6°F (27°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), that combines air temperature and relative humidity, is calculated to 98.2°F (36.8°C).

What is the average humidity in September in Coral Gables?

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

How many days does it rain in September in Coral Gables?

In Coral Gables, Florida, during September, the rain falls for 18.5 days and regularly aggregates up to 1.02" (26mm) of precipitation.

What is the ocean temperature in September in Coral Gables?

In Coral Gables, Florida, the average seawater temperature in September is 85.5°F (29.7°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.

What is the average length of the day in September in Coral Gables?

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

How many hours of sunshine does Coral Gables have in September?

In Coral Gables, the average sunshine in September is 9.1h.

When is the highest UV index in Coral Gables?

May through October, with an average maximum UV index of 7, are months with the highest UV index.

What is the UV index intensity in September in Coral Gables?

The average daily maximum UV index in September in Coral Gables is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV rays.

Average temperature in September
Coral Gables, FL

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

The warmest month (with the highest average high temperature) is August (88.3°F).
The month with the lowest average high temperature is January (73.4°F).

  • Average low temperature in September: 80.6°F

The month with the highest average low temperature is August (81.9°F).
The coldest month (with the lowest average low temperature) is January (63.9°F).

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Average pressure in September
Coral Gables, FL

Average pressure in September - Coral Gables, 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
Coral Gables, FL

Average wind speed in September - Coral Gables, FL
  • Average wind speed in September: 7.6mph

The windiest month (with the highest average wind speed) is March (10.5mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).

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Average humidity in September
Coral Gables, FL

Average humidity in September - Coral Gables, 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
Coral Gables, FL

Average rainfall in September - Coral Gables, FL
  • Average rainfall in September: 1.02"

The wettest month (with the highest rainfall) is August (1.85").
The driest month (with the least rainfall) is January (0.31").

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Average rainfall days in September
Coral Gables, FL

Average rainfall days in September - Coral Gables, FL
  • Average rainfall days in September: 18.5 days

The month with the highest number of rainy days is September (18.5 days).
The month with the least rainy days is February (6.7 days).

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Average sea temperature in September
Coral Gables, FL

Average sea temperature in September - Coral Gables, 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).

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Average daylight in September /
Average sunshine in September
Coral Gables, FL

Average daylight in September / Average sunshine in September - Coral Gables, 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: 10.6h).

  • 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: 6.5h).

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Average sunshine days in September
Coral Gables, FL

Average sunshine days in September - Coral Gables, FL
  • Average sunshine days in September: 6.6 days

The month with the most sunshine days is January (21.5 days).
The month with the least sunshine days is September (6.6 days).

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Average UV index in September
Coral Gables, FL

Average UV index in September - Coral Gables, FL
  • Average UV index in September: 7

Months with the highest UV index are May, June, July, August, September and October (UV index 7).
The month with the lowest UV index is January (UV index 5).

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Average cloud cover in September
Coral Gables, FL

Average cloud cover in September - Coral Gables, FL
  • Average cloud cover in September: 28

The month with the most cloud cover is October (Cloud cover 34).
The month with the least cloud cover is April (Cloud cover 25).

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Average visibility in September
Coral Gables, FL

Average visibility in September - Coral Gables, 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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