September weather forecast
Calang, Indonesia

The first month of the autumn, September, is still a warm month in Calang, Indonesia, with temperature in the range of an average low of 23°C (73.4°F) and an average high of 29.6°C (85.3°F).

Temperature

As Calang steps into September, the average high-temperature is measured at a warm 29.6°C (85.3°F), displaying minor differences from August's 30°C (86°F). Calang experiences a mean low-temperature of 23°C (73.4°F) during September.

Heat index

The heat index for September is calculated to be a sweltering 35°C (95°F). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In Calang, the average relative humidity in September is 76%.

Rainfall

In Calang, in September, during 23.6 rainfall days, 146mm (5.75") of precipitation is typically accumulated. Throughout the year, there are 308.7 rainfall days, and 2171mm (85.47") of precipitation is accumulated.

Daylight

In Calang, Indonesia, the average length of the day in September is 12h and 8min.
On the first day of the month, sunrise is at 06:31 and sunset at 18:43. On the last day of September, sunrise is at 06:25 and sunset at 18:30 WIB.

Sunshine

In Calang, the average sunshine in September is 8.3h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Calang. The months with the lowest UV index 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 exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 7 during September translates into the following guidance:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.