September weather forecast
Sumatra, FL

September, the first month of the autumn in Sumatra, is also a hot month, with an average temperature fluctuating between 72.5°F (22.5°C) and 87.3°F (30.7°C).

Temperature

The transition into September marks the average high-temperature at a still tropical 87.3°F (30.7°C), differing minimally from August's 90.3°F (32.4°C). Nighttime temperature dips to a mean of 72.5°F (22.5°C) during September.

Heat index

The average heat index in September is estimated at a torrid 100.4°F (38°C). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

The average relative humidity in September is 75%.

Rainfall

In September, the rain falls for 17.5 days. Throughout September, 2.44" (62mm) of precipitation is accumulated. Throughout the year, in Sumatra, there are 164.7 rainfall days, and 30.63" (778mm) of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 20min.
On the first day of the month, sunrise is at 7:17 am and sunset at 8:02 pm. On the last day of September, sunrise is at 7:33 am and sunset at 7:26 pm EDT.

Sunshine

In Sumatra, the average sunshine in September is 9h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily maximum UV index of 6 in September translates into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.