September weather forecast
Srengseng, Indonesia

September, the first month of the spring in Srengseng, is still a tropical month, with an average temperature ranging between min 23.5°C (74.3°F) and max 31.5°C (88.7°F).

Temperature

The transition from August to September sees average high-temperatures adjusting to a still hot 31.5°C (88.7°F), from a not significantly different 31.3°C (88.3°F). During September nights, Srengseng witnesses a consistent average temperature of 23.5°C (74.3°F).

Heat index

The average heat index in September is evaluated at a very hot 38°C (100.4°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. 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 68%, are the least humid months.

Rainfall

In Srengseng, in September, during 16.7 rainfall days, 65mm (2.56") of precipitation is typically accumulated. In Srengseng, during the entire year, the rain falls for 288.9 days and collects up to 1568mm (61.73") of precipitation.

Daylight

In September, the average length of the day is 12h and 4min.
On the first day of the month, sunrise is at 05:53 and sunset at 17:52. On the last day of September, sunrise is at 05:38 and sunset at 17:47 WIB.

Sunshine

In September, the average sunshine is 9.4h.

UV index

The months with the highest UV index in Srengseng are February through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 7 during September translates into the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. 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. 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.