September weather forecast
Bunder, Indonesia

The first month of the spring, September, is also a hot month in Bunder, Indonesia, with an average temperature fluctuating between 24.9°C (76.8°F) and 31.2°C (88.2°F).

Temperature

The advent of September reveals an average high-temperature of a still tropical 31.2°C (88.2°F), showing minimal difference from the prior month. Bunder in September experiences a low-temperature average of 24.9°C (76.8°F).

Heat index

In September, the average heat index is evaluated at a fiery hot 38°C (100.4°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

The months with the lowest humidity in Bunder are September and October, with an average relative humidity of 71%.

Rainfall

The month with the least rainfall is September, when the rain falls for 11.9 days and typically collects 27mm (1.06") of precipitation.

Daylight

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

Sunshine

The month with the most sunshine in Bunder is September, with an average of 9.4h of sunshine.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Bunder. The months with the lowest UV index in Bunder, Indonesia, are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum UV index of 7 in September translates into the following recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.