September weather forecast
Sumput, Indonesia

The first month of the spring, September, is still a hot month in Sumput, Indonesia, with an average temperature varying between 22.5°C (72.5°F) and 33.9°C (93°F).

Temperature

As September unfolds, the average high-temperature reaches a still tropical 33.9°C (93°F), hinting at a slight fluctuation from the previous month. Nighttime temperatures in September average to a pleasant 22.5°C (72.5°F).

Heat index

In September, the heat index is calculated to be a scorching 43°C (109.4°F). Stay alert: Heat cramps and heat exhaustion are expected. Heatstroke is a likely outcome of ongoing activity.
The metrics for the heat index are tailored for both shady environments and light winds. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

The months with the lowest humidity in Sumput are September and October, with an average relative humidity of 62%.

Rainfall

In Sumput, Indonesia, in September, it is raining for 5.4 days, with typically 11mm (0.43") of accumulated precipitation. Throughout the year, in Sumput, there are 218.3 rainfall days, and 1409mm (55.47") of precipitation is accumulated.

Daylight

In Sumput, the average length of the day in September is 12h and 4min.
On the first day of the month, sunrise is at 05:30 and sunset at 17:28. On the last day of September, sunrise is at 05:14 and sunset at 17:24 WIB.

Sunshine

August through October, with an average of 9.7h of sunshine, are months with the most sunshine in Sumput.

UV index

February, April through December, with an average maximum UV index of 7, are months with the highest UV index in Sumput. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: A daily high UV index of 7 in September leads to these guidelines:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.