September weather forecastRangkasbitung, Indonesia

Weather in September

September, the first month of the spring in Rangkasbitung, is still a tropical month, with temperature in the range of an average low of 23.5°C (74.3°F) and an average high of 31.6°C (88.9°F).

Temperature

The beginning of September records an average high-temperature of a still tropical 31.6°C (88.9°F), almost echoing the conditions of the previous month. Rangkasbitung records an average nighttime low of 23.5°C (74.3°F) in September.

Heat index

For most parts of September, the heat index is appraised at a blistering 40°C (104°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
Heat index readings emphasize conditions of light breezes and shaded spots. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'feels like' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. 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 in Rangkasbitung are September and October, with an average relative humidity of 71%.

Rainfall

In Rangkasbitung, during September, the rain falls for 16 days and regularly aggregates up to 47mm (1.85") of precipitation. In Rangkasbitung, Indonesia, during the entire year, the rain falls for 291.3 days and collects up to 1460mm (57.48") of precipitation.

Daylight

The average length of the day in September in Rangkasbitung is 12h and 4min.
On the first day of the month, sunrise is at 05:55 and sunset at 17:54. On the last day of September, in Rangkasbitung, sunrise is at 05:40 and sunset at 17:49 WIB.

Sunshine

September has the most sunshine of the year in Rangkasbitung, with an average of 9.3h of sunshine.

UV index

The months with the highest UV index in Rangkasbitung 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 ordinary individuals.
Note: The daily high UV index of 7 during September translates into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. A hat with a broad brim is indispensable, filtering out up to half of UV rays.