September weather forecast
Kasemen, Indonesia

The first month of the spring, September, is also a hot month in Kasemen, Indonesia, with an average temperature ranging between min 25°C (77°F) and max 31.3°C (88.3°F).

Temperature

September brings an average high-temperature of a still tropical 31.3°C (88.3°F), showing a slight difference from August's 30.7°C (87.3°F). In the month of September, an average of 25°C (77°F) marks the low-temperature.

Heat index

September's average heat index is evaluated at a sweltering 39°C (102.2°F). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
Observations indicate that the heat index values are for shady locations with light wind. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

September and October, with an average relative humidity of 71%, are the least humid months in Kasemen.

Rainfall

In September, the rain falls for 13.3 days. Throughout September, 31mm (1.22") of precipitation is accumulated. In Kasemen, during the entire year, the rain falls for 273 days and collects up to 1266mm (49.84") of precipitation.

Daylight

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

Sunshine

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

UV index

The months with the highest UV index in Kasemen are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Kasemen. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: In September, the maximum UV index of 7 suggests this advice:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.