September weather forecast
Port Charlotte, FL

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Palm trees and trees surrounding a pond in Port Charlotte, Florida
Palm trees and trees surrounding a pond in Port Charlotte, Florida

Weather in September

September sees a mild drop in temperature marking the gradual transition from summer to fall in Port Charlotte. While the end of summer heat may provide relief, residents should expect an increase in atmospheric pressure. Daylight begins to reduce and wind speed sees a slight uptick. In September, the city experiences rainfall measuring 3.03" (77mm), a significant drop as compared to August. The transition from September to October anticipates a further decrease in temperature and rainfall levels.

Temperature

With September's arrival, Port Charlotte's weather records an average high-temperature of a still tropical 88.3°F (31.3°C), marking little difference from August's 90.1°F (32.3°C). During September, Port Charlotte records an average temperature of 75.6°F (24.2°C) at night.

Heat index

The heat index for September is computed to be a blistering 105.8°F (41°C). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

September is the most humid month in Port Charlotte, with an average relative humidity of 78%.

Rainfall

In Port Charlotte, in September, it is raining for 22.5 days, with typically 3.03" (77mm) of accumulated precipitation. In Port Charlotte, during the entire year, the rain falls for 176 days and collects up to 26.26" (667mm) of precipitation.

Daylight

The average length of the day in September in Port Charlotte is 12h and 19min.
On the first day of September, sunrise is at 7:08 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:15 pm EDT.

Sunshine

In Port Charlotte, the average sunshine in September is 9h.

UV index

The months with the highest UV index in Port Charlotte are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In September, the UV index of 7 transforms into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Frequently asked questions

Is it hot in Port Charlotte during September?

In Port Charlotte, in September, the average high-temperature is 88.3°F (31.3°C), and the average low-temperature is 75.6°F (24.2°C). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, is computed to be 105.8°F (41°C).

What is the most humid month in Port Charlotte?

September is the most humid month in Port Charlotte, with an average relative humidity of 78%.

What is the average humidity in September in Port Charlotte?

In Port Charlotte, Florida, the average relative humidity in September is 78%.

How much does it rain in Port Charlotte in September?

In Port Charlotte, in September, it is raining for 22.5 days, with typically 3.03" (77mm) of accumulated precipitation.

What is the average length of the day in September in Port Charlotte?

In September, the average day length is 12h and 19min.

When is the sunrise / sunset in September in Port Charlotte?

In September, on the first day of the month, sunrise is at 7:08 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:15 pm EDT.

How long on average sun shines in September in Port Charlotte?

The average sunshine duration in September is 9h.

When is the highest UV index in Port Charlotte?

May through September, with an average maximum UV index of 7, are months with the highest UV index in Port Charlotte, Florida.

What is the UV index reading in September in Port Charlotte?

The average daily maximum UV index in September in Port Charlotte is 7. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Port Charlotte, FL

Average temperature in September - Port Charlotte, FL
  • Average high temperature in September: 88.3°F

The warmest month (with the highest average high temperature) is August (90.1°F).
The month with the lowest average high temperature is January (70.5°F).

  • Average low temperature in September: 75.6°F

The month with the highest average low temperature is August (78.3°F).
The coldest month (with the lowest average low temperature) is January (54.7°F).

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Average pressure in September
Port Charlotte, FL

Average pressure in September - Port Charlotte, FL
  • Average pressure in September: 29.95"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).

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Average wind speed in September
Port Charlotte, FL

Average wind speed in September - Port Charlotte, FL
  • Average wind speed in September: 6mph

The windiest months (with the highest average wind speed) are January and March (7.8mph).
The calmest month (with the lowest average wind speed) is July (5.4mph).

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Average humidity in September
Port Charlotte, FL

Average humidity in September - Port Charlotte, FL
  • Average humidity in September: 78%

The month with the highest relative humidity is September (78%).
The month with the lowest relative humidity is March (70%).

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Average rainfall in September
Port Charlotte, FL

Average rainfall in September - Port Charlotte, FL
  • Average rainfall in September: 3.03"

The wettest month (with the highest rainfall) is August (5.04").
The driest month (with the least rainfall) is February (0.63").

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Average rainfall days in September
Port Charlotte, FL

Average rainfall days in September - Port Charlotte, FL
  • Average rainfall days in September: 22.5 days

The month with the highest number of rainy days is August (25.6 days).
The month with the least rainy days is February (7.1 days).

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Average daylight in September /
Average sunshine in September
Port Charlotte, FL

Average daylight in September / Average sunshine in September - Port Charlotte, FL
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in September: 9h and 0min

The months with the most sunshine are May and July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

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Average sunshine days in September
Port Charlotte, FL

Average sunshine days in September - Port Charlotte, FL
  • Average sunshine days in September: 4.5 days

The month with the most sunshine days is January (22 days).
The month with the least sunshine days is August (3.8 days).

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Average UV index in September
Port Charlotte, FL

Average UV index in September - Port Charlotte, FL
  • Average UV index in September: 7

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

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Average cloud cover in September
Port Charlotte, FL

Average cloud cover in September - Port Charlotte, FL
  • Average cloud cover in September: 30

The month with the most cloud cover is January (Cloud cover 31).
The month with the least cloud cover is May (Cloud cover 24).

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Average visibility in September
Port Charlotte, FL

Average visibility in September - Port Charlotte, FL
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Port Charlotte, Florida, USA

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