September weather forecastBongsari, Indonesia

Weather in September

The first month of the spring, September, is still a hot month in Bongsari, Indonesia, with an average temperature ranging between min 23.8°C (74.8°F) and max 33.2°C (91.8°F).

Temperature

September's onset records an average high-temperature of a still tropical 33.2°C (91.8°F), a near match to August's 32.3°C (90.1°F). Bongsari records an average low-temperature of 23.8°C (74.8°F) throughout the month of September.

Heat index

September's average heat index is calculated to be a blistering 42°C (107.6°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a value derived by merging air temperature with the humidity to convey how the climate feels. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

With an average relative humidity of 66%, September is the least humid month.

Rainfall

In September, the rain falls for 10.8 days. Throughout September, 24mm (0.94") of precipitation is accumulated. Throughout the year, in Bongsari, Indonesia, there are 226.7 rainfall days, and 1000mm (39.37") of precipitation is accumulated.

Daylight

The average length of the day in September in Bongsari is 12h and 4min.
On the first day of September in Bongsari, Indonesia, sunrise is at 05:38 and sunset at 17:37. On the last day of the month, sunrise is at 05:23 and sunset at 17:33 WIB.

Sunshine

The average sunshine in September is 9.7h.

UV index

February through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.
Note: In September, the maximum UV index of 7 suggests these recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.