September weather forecast and climate
Dona Vista, FL

September, the first month of the autumn, in Dona Vista, is also a hot month, with average temperature fluctuating between 88.5°F (31.4°C) and 73.2°F (22.9°C).

Temperature

In Dona Vista, Florida, the average high-temperature in September is relatively the same as in August - a still tropical 88.5°F (31.4°C). The average low-temperature, in Dona Vista, is 73.2°F (22.9°C).

Heat index

The average heat index is estimated at a blistering 106.7°F (41.5°C). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like pregnancy, clothing, differences in body mass, height, and shape, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

July through September, with an average relative humidity of 78%, are most humid months in Dona Vista.

Rainfall

In Dona Vista, in September, it is raining for 22.3 days, with typically 4.02" (102mm) of accumulated precipitation. Throughout the year, there are 193.1 rainfall days, and 35.71" (907mm) of precipitation is accumulated.

Daylight

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

Sunshine

In September, the average sunshine in Dona Vista is 8.7h.

UV index

In Dona Vista, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health hazard from the exposure to the Sun's UV radiation for ordinary 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. 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.

What is the temperature in September in Dona Vista?

In Dona Vista, Florida, in September, the average high-temperature is 88.5°F (31.4°C), and the average low-temperature is 73.2°F (22.9°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that combines relative humidity and air temperature, in September is estimated at 106.7°F (41.5°C).

What are the most humid months in Dona Vista?

July through September, with an average relative humidity of 78%, are most humid months in Dona Vista.

What is the average humidity in September in Dona Vista?

The average relative humidity in September in Dona Vista, Florida, is 78%.

How much does it rain in Dona Vista in September?

In Dona Vista, Florida, in September, it is raining for 22.3 days, with typically 4.02" (102mm) of accumulated precipitation.

What is the average length of the day in September in Dona Vista?

In Dona Vista, Florida, the average length of the day in September is 12.3h.

How long on average sun shines in September in Dona Vista?

The average sunshine in September in Dona Vista, Florida, is 8.7h.

How high is the UV index in September in Dona Vista?

In Dona Vista, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation.
Average temperature in September - Dona Vista, FL
  • Average high temperature in September: 88.5°F

The warmest month (with the highest average high temperature) is August (90.9°F).
The month with the lowest average high temperature is January (67.5°F).

  • Average low temperature in September: 73.2°F

The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (49.5°F).

Average pressure in September - Dona Vista, FL
  • Average pressure in September: 29.97"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is September (29.97").

Average wind speed in September - Dona Vista, FL
  • Average wind speed in September: 4.8mph

The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).

Average humidity in September - Dona Vista, FL
  • Average humidity in September: 78%

Months with the highest relative humidity are July, August and September (78%).
The month with the lowest relative humidity is March (71%).

Average rainfall in September - Dona Vista, FL
  • Average rainfall in September: 4.02"

The wettest month (with the highest rainfall) is July (5.91").
The driest months (with the least rainfall) are March and November (1.26").

Average rainfall days in September - Dona Vista, FL
  • Average rainfall days in September: 22.3 days

The month with the highest number of rainy days is July (26.9 days).
The month with the least rainy days is January (9.2 days).

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

The month with the longest days is June (Average daylight: 14h).
The month with the shortest days is December (Average daylight: 10.3h).

  • Average sunshine in September: 8.7h

Months with the most sunshine are May and July (Average sunshine: 10.7h).
The month with the least sunshine is December (Average sunshine: 6.1h).

Average sunshine days in September - Dona Vista, FL
  • Average sunshine days in September: 5.7 days

The month with the most sunshine days is January (19 days).
The month with the least sunshine days is August (2.1 days).

Average UV index in September - Dona Vista, FL
  • Average UV index in September: 6

Months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 4).

Average cloud cover in September - Dona Vista, FL
  • Average cloud cover in September: 32

Months with the most cloud cover are February and December (Cloud cover 37).
The month with the least cloud cover is May (Cloud cover 29).

Average visibility in September - Dona Vista, 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).