September weather forecast and climate
Estero, FL

Weather in September

The first month of the autumn, September, is still a hot month in Estero, Florida, with average temperature fluctuating between 76.6°F (24.8°C) and 87.6°F (30.9°C).

Temperature

In Estero, Florida, the average high-temperature in September is almost the same as in August - a still hot 87.6°F (30.9°C). In Estero, in September, the average low-temperature is 76.6°F (24.8°C).

Heat index

The average heat index is appraised at a very hot 103.1°F (39.5°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. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like differences in body mass, height, and shape, clothing, pregnancy, 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. 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 exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

With an average relative humidity of 77%, September is the most humid month in Estero.

Rainfall

In Estero, in September, it is raining for 23.5 days, with typically 3.43" (87mm) of accumulated precipitation. Throughout the year, there are 170 rainfall days, and 23.82" (605mm) of precipitation is accumulated.

Daylight

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

Sunshine

In Estero, the average sunshine is 9.1h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 7 transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. 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.
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FAQ

What is the temperature in September in Estero?

In September, in Estero, Florida, the average high-temperature is 87.6°F (30.9°C), and the average low-temperature is 76.6°F (24.8°C). The average heat index (a.k.a. 'feels like', 'real feel'), that calculates temperature value influenced by the moisture in the air, in September is appraised at 103.1°F (39.5°C).

What is the most humid month in Estero?

With an average relative humidity of 77%, September is the most humid month.

What is the average humidity in September in Estero?

The average relative humidity in September in Estero is 77%.

How many days does it rain in September in Estero?

In Estero, Florida, in September, it is raining for 23.5 days, with typically 3.43" (87mm) of accumulated precipitation.

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

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

How long on average sun shines in September in Estero?

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

What is the month with the highest UV index in Estero?

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

How high is the UV index in September in Estero?

In Estero, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from unprotected exposure to the UV radiation.

Average temperature in September
Estero, FL

Average temperature in September - Estero, FL
  • Average high temperature in September: 87.6°F

The warmest month (with the highest average high temperature) is August (90°F).
The month with the lowest average high temperature is January (71.2°F).

  • Average low temperature in September: 76.6°F

The month with the highest average low temperature is August (78.4°F).
The coldest month (with the lowest average low temperature) is January (56.1°F).

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Average pressure in September
Estero, FL

Average pressure in September - Estero, FL
  • Average pressure in September: 29.95"

The month with the highest atmospheric pressure is January (30.11").
The month with the lowest atmospheric pressure is September (29.95").

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Average wind speed in September
Estero, FL

Average wind speed in September - Estero, FL
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is October (7.8mph).
The calmest month (with the lowest average wind speed) is July (5.4mph).

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Average humidity in September
Estero, FL

Average humidity in September - Estero, FL
  • Average humidity in September: 77%

The month with the highest relative humidity is September (77%).
The month with the lowest relative humidity is March (70%).

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Average rainfall in September
Estero, FL

Average rainfall in September - Estero, FL
  • Average rainfall in September: 3.43"

The wettest month (with the highest rainfall) is August (5.12").
The driest month (with the least rainfall) is February (0.55").

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Average rainfall days in September
Estero, FL

Average rainfall days in September - Estero, FL
  • Average rainfall days in September: 23.5 days

The month with the highest number of rainy days is August (25 days).
The month with the least rainy days is January (6.3 days).

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

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

The month with the longest days is June (Average daylight: 13.8h).
The month with the shortest days is December (Average daylight: 10.5h).

  • Average sunshine in September: 9.1h

Months with the most sunshine are May and July (Average sunshine: 11h).
The month with the least sunshine is December (Average sunshine: 6.6h).

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Average sunshine days in September
Estero, FL

Average sunshine days in September - Estero, FL
  • Average sunshine days in September: 4.9 days

The month with the most sunshine days is January (23.3 days).
The month with the least sunshine days is August (4.1 days).

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Average UV index in September
Estero, FL

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

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

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Average cloud cover in September
Estero, FL

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

The month with the most cloud cover is January (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 24).

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Average visibility in September
Estero, FL

Average visibility in September - Estero, 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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