September weather forecast
Port Charlotte, FL

englishespañol中文
Share
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

The advent of September sees the average high-temperature at a still tropical 88.3°F (31.3°C), subtly shifted 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 value for September is appraised at a scorching 105.8°F (41°C). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. 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 especially crucial for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

The most humid month is September, with an average relative humidity of 78%.

Rainfall

In September, the rain falls for 22.5 days. Throughout September, 3.03" (77mm) of precipitation is accumulated. Throughout the year, there are 176 rainfall days, and 26.26" (667mm) of precipitation is accumulated.

Daylight

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

Sunshine

The average sunshine in September is 9h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index, 7 during September, leads to the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.

Frequently asked questions

How hot is it in September?

In September, in Port Charlotte, the average high-temperature is 88.3°F (31.3°C), and the average low-temperature is 75.6°F (24.2°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is appraised at 105.8°F (41°C).

What is the most humid month?

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

What is the average humidity in September?

In September, the average relative humidity is 78%.

How many days does it rain in September?

In September, the rain falls for 22.5 days. Throughout September, 3.03" (77mm) of precipitation is accumulated.

How many hours of daylight does Port Charlotte have in September?

The average day length in September is 12h and 19min.

When are sunrise and sunset in September in Port Charlotte?

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.

How many hours of sunshine does Port Charlotte have in September?

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

What are the months with the highest UV index?

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

How high is the UV index in September?

In September, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to Sun's UV rays.
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).

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).

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).

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%).

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").

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).

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).

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).

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).

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).

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).

Port Charlotte, Florida, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location