September weather forecast
Sekarsuli, Indonesia

The first month of the spring, September, is also a moderately hot month in Sekarsuli, Indonesia, with temperature in the range of an average low of 20.8°C (69.4°F) and an average high of 29.7°C (85.5°F).

Temperature

September's beginning signals an average high-temperature of a still moderately hot 29.7°C (85.5°F), barely different from August's 28.7°C (83.7°F). During the month of September, the nighttime temperature falls to an average of 20.8°C (69.4°F).

Heat index

The heat index value for September is estimated at a very hot 36°C (96.8°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is found by incorporating humidity levels into the air temperature measurement. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

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

Rainfall

In Sekarsuli, Indonesia, in September, during 15.8 rainfall days, 53mm (2.09") of precipitation is typically accumulated. Throughout the year, there are 290.8 rainfall days, and 2049mm (80.67") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 4min.
On the first day of the month, sunrise is at 05:38 and sunset at 17:36. On the last day of September, sunrise is at 05:22 and sunset at 17:32 WIB.

Sunshine

In Sekarsuli, the average sunshine in September is 8.9h.

UV index

January through September, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: A daily maximum UV index of 6 in September translates into the following instructions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.