September weather forecast
Chapman, FL

September, the first month of the autumn in Chapman, is still a hot month, with an average temperature fluctuating between 74.8°F (23.8°C) and 88.7°F (31.5°C).

Temperature

September's weather displays an average high-temperature of a still tropical 88.7°F (31.5°C), slightly varied from August's 90.5°F (32.5°C). The average temperature in Chapman, Florida, drops to a warm 74.8°F (23.8°C) during the night in the month of September.

Heat index

September's average heat index is evaluated at an extremely hot 105.8°F (41°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
The metrics for the heat index are tailored for both shady environments and light winds. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

September and December, with an average relative humidity of 76%, are the most humid months in Chapman.

Rainfall

In Chapman, during September, the rain falls for 20 days and regularly aggregates up to 2.72" (69mm) of precipitation. In Chapman, during the entire year, the rain falls for 162.9 days and collects up to 23.7" (602mm) of precipitation.

Daylight

In Chapman, 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 7:50 pm. On the last day of September, sunrise is at 7:22 am and sunset at 7:16 pm EDT.

Sunshine

The average sunshine in September is 8.9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index, 7 during September, leads to the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.