September weather forecast
Cetan, Indonesia

The first month of the spring, September, is a hot month in Cetan, Indonesia, with an average temperature fluctuating between 30.6°C (87.1°F) and 21.1°C (70°F).

Temperature

The arrival of September denotes a barely perceptible change in the average high-temperatures to a hot 30.6°C (87.1°F) from August's 29.5°C (85.1°F). During September, Cetan experiences an average low-temperature of 21.1°C (70°F) at night.

Heat index

September's mean heat index is computed to be a very hot 38°C (100.4°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', determines the feeling of heat when you account for the relative humidity. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. 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. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

The months with the lowest humidity are September and October, with an average relative humidity of 74%.

Rainfall

In Cetan, in September, it is raining for 13.8 days, with typically 48mm (1.89") of accumulated precipitation. In Cetan, during the entire year, the rain falls for 276.8 days and collects up to 2048mm (80.63") of precipitation.

Daylight

The average length of the day in September in Cetan, Indonesia, is 12h and 4min.
On the first day of September in Cetan, sunrise is at 05:38 and sunset at 17:36. On the last day of the month, sunrise is at 05:22 and sunset at 17:32 WIB.

Sunshine

August and September, with an average of 9.2h of sunshine, are months with the most sunshine in Cetan.

UV index

September and October, 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 vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, a regular UV index of 7 translates into these guidelines:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.