September weather forecast
Jatiasih, Indonesia

September, the first month of the spring in Jatiasih, is still a hot month, with an average temperature ranging between max 31.3°C (88.3°F) and min 25.4°C (77.7°F).

Temperature

The initiation of September records an average high-temperature of a still tropical 31.3°C (88.3°F), displaying a near consistency with the previous month. In Jatiasih, an average temperature of 25.4°C (77.7°F) is noted during September nights.

Heat index

The heat index value during September is estimated at a very hot 37°C (98.6°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Consider that heat index readings are for situations in the shade and light wind. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. 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.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

September and October, with an average relative humidity of 67%, are the least humid months in Jatiasih.

Rainfall

In September, the rain falls for 12.8 days. Throughout September, 50mm (1.97") of precipitation is accumulated. In Jatiasih, during the entire year, the rain falls for 265.8 days and collects up to 1584mm (62.36") of precipitation.

Daylight

The average length of the day in September is 12h and 4min.
On the first day of September in Jatiasih, sunrise is at 05:52 and sunset at 17:51. On the last day of the month, sunrise is at 05:37 and sunset at 17:46 WIB.

Sunshine

The average sunshine in September in Jatiasih is 9.5h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Jatiasih. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.