September weather forecast
Tangerang, Indonesia

As September unfolds, Tangerang's rainfall begins a slow ascent, paralleling the gradual increase in temperature to 30.7°C (87.3°F). The air pressure, now at 1011.1mb, is a telling sign of the calm weather conditions that reign. A surge in sunlight hours escorts in the hope of more outdoor recreational activities and exploration. As nightfall draws near earlier, the city's nightlife takes on a more effervescent character under the mildly cooler weather conditions. As such, September in Tangerang offers a harmonic blend of gentle sun, comforting winds, and crescents of clouds high above.

Temperature

The transition into September in Tangerang notes an average high-temperature of a still tropical 30.7°C (87.3°F), revealing a mild distinction from the 30.4°C (86.7°F) in August. An average low-temperature of 25.2°C (77.4°F) is anticipated throughout the nights during September.

Heat index

For September, the heat index is calculated to be a sweltering 37°C (98.6°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

The months with the lowest humidity are September and October, with an average relative humidity of 69%.

Rainfall

In Tangerang, in September, it is raining for 17 days, with typically 56mm (2.2") of accumulated precipitation. In Tangerang, during the entire year, the rain falls for 283.6 days and collects up to 1323mm (52.09") of precipitation.

Daylight

In Tangerang, the average length of the day in September is 12h and 4min.
On the first day of the month, sunrise is at 05:53 and sunset at 17:53. On the last day of September, in Tangerang, sunrise is at 05:38 and sunset at 17:48 WIB.

Sunshine

The average sunshine in September in Tangerang is 9.7h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index in Tangerang are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: The daily high UV index of 7 in September translates into this advice:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.