September weather forecast
Keper, Indonesia

The first month of the spring, September, is a hot month in Keper, Indonesia, with temperature in the range of an average low of 23.1°C (73.6°F) and an average high of 30.3°C (86.5°F).

Temperature

With the arrival of September, Keper's average high-temperature registers at a hot 30.3°C (86.5°F), indicating a subtle variation from the previous month. Nightly temperatures drop to an average low of 23.1°C (73.6°F) in September.

Heat index

The heat index value during September is estimated at a fiery hot 35°C (95°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In September, the average relative humidity is 68%.

Rainfall

In Keper, during September, the rain falls for 9.1 days and regularly aggregates up to 21mm (0.83") of precipitation. Throughout the year, there are 237 rainfall days, and 1091mm (42.95") of precipitation is accumulated.

Daylight

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

Sunshine

August through October, with an average of 9.8h of sunshine, are months with the most sunshine.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Keper. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: In September, the maximum UV index of 7 suggests these recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.