September weather forecast and climate
Miami, AZ

Weather in September

September, the first month of the autumn, in Miami, is still a tropical month, with temperature in the range of an average high of 86.5°F (30.3°C) and an average low of 67.1°F (19.5°C).

Temperature

In Miami, the average high-temperature is almost the same as in August - a still tropical 86.5°F (30.3°C). The average low-temperature, in Miami, is 67.1°F (19.5°C).

Heat index

The average heat index is evaluated at a hot 86°F (30°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
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 'real feel', 'feels like', 'felt air temperature', or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like activity, metabolic differences, wind, and clothing 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 particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In September, the average relative humidity is 40%.

Rainfall

In September, in Miami, Arizona, the rain falls for 11 days. Throughout September, 1.73" (44mm) of precipitation is accumulated. In Miami, during the entire year, the rain falls for 90.6 days and collects up to 14.88" (378mm) of precipitation.

Snowfall

In Miami, Arizona, snow does not fall in May through October.

Daylight

In September, the average length of the day in Miami is 12.4h.

Sunshine

The average sunshine in Miami is 9.8h.

UV index

In Miami, Arizona, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to the UV radiation for average individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
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 Miami?

In Miami, in September, the average high-temperature is 86.5°F (30.3°C), and the average low-temperature is 67.1°F (19.5°C). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), that combines relative humidity and air temperature, is estimated at 86°F (30°C).

What is the average humidity in September in Miami?

In September, the average relative humidity in Miami, Arizona, is 40%.

How much does it rain in Miami in September?

In Miami, Arizona, in September, it is raining for 11 days, with typically 1.73" (44mm) of accumulated precipitation.

When it does not snow in Miami?

May through October are months without snowfall in Miami.

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

The average length of the day in September in Miami is 12.4h.

How many hours of sunshine does Miami have in September?

In Miami, the average sunshine in September is 9.8h.

How high is the UV index in September in Miami?

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

Average temperature in September
Miami, AZ

Average temperature in September - Miami, AZ
  • Average high temperature in September: 86.5°F

The warmest month (with the highest average high temperature) is July (93°F).
The month with the lowest average high temperature is December (55.6°F).

  • Average low temperature in September: 67.1°F

The month with the highest average low temperature is August (73.2°F).
The coldest months (with the lowest average low temperature) are January and December (38.3°F).

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Average pressure in September
Miami, AZ

Average pressure in September - Miami, AZ
  • Average pressure in September: 29.92"

The month with the highest atmospheric pressure is January (30.11").
The month with the lowest atmospheric pressure is June (29.86").

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Average wind speed in September
Miami, AZ

Average wind speed in September - Miami, AZ
  • Average wind speed in September: 5.5mph

The windiest month (with the highest average wind speed) is May (7.2mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in September
Miami, AZ

Average humidity in September - Miami, AZ
  • Average humidity in September: 40%

The month with the highest relative humidity is December (52%).
The month with the lowest relative humidity is June (21%).

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Average rainfall in September
Miami, AZ

Average rainfall in September - Miami, AZ
  • Average rainfall in September: 1.73"

The wettest month (with the highest rainfall) is August (2.28").
The driest month (with the least rainfall) is June (0.24").

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Average rainfall days in September
Miami, AZ

Average rainfall days in September - Miami, AZ
  • Average rainfall days in September: 11 days

The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is June (3.5 days).

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Average snowfall in September
Miami, AZ

Average snowfall in September - Miami, AZ
  • Average snowfall in September: 0"

The month with the highest snowfall is February (2.72").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Miami, AZ

Average snowfall days in September - Miami, AZ
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (1.8 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Miami, AZ

Average daylight in September / Average sunshine in September - Miami, AZ
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 9.8h

The month with the most sunshine is August (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 6.5h).

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Average sunshine days in September
Miami, AZ

Average sunshine days in September - Miami, AZ
  • Average sunshine days in September: 15.8 days

The month with the most sunshine days is March (26 days).
The month with the least sunshine days is July (10 days).

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Average UV index in September
Miami, AZ

Average UV index in September - Miami, AZ
  • Average UV index in September: 6

Months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in September
Miami, AZ

Average cloud cover in September - Miami, AZ
  • Average cloud cover in September: 13

The month with the most cloud cover is December (Cloud cover 25).
The month with the least cloud cover is June (Cloud cover 7).

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Average visibility in September
Miami, AZ

Average visibility in September - Miami, AZ
  • 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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