December weather forecastCilandak, Indonesia

Weather in December

The first month of the summer, December, is still a tropical month in Cilandak, Indonesia, with temperature in the range of an average low of 25.7°C (78.3°F) and an average high of 30.5°C (86.9°F).

Temperature

As Cilandak welcomes December, the average high-temperature records at a still tropical 30.5°C (86.9°F), marking an insignificant deviation from the prior month. A steady low-temperature average of 25.7°C (78.3°F) is logged during December, reflecting a modest dip from daytime readings.

Heat index

For most parts of December, the heat index is estimated at a very hot 37°C (98.6°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In Cilandak, Indonesia, the average relative humidity in December is 72%.

Rainfall

In Cilandak, Indonesia, during December, the rain falls for 23.9 days and regularly aggregates up to 104mm (4.09") of precipitation. In Cilandak, Indonesia, during the entire year, the rain falls for 257.1 days and collects up to 991mm (39.02") of precipitation.

Daylight

The month with the longest days is December, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 05:28 and sunset at 17:55. On the last day of December, in Cilandak, sunrise is at 05:41 and sunset at 18:10 WIB.

Sunshine

In December, the average sunshine in Cilandak is 9.4h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 7 during December translates into the following recommendations:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Boost your sun resistance with garments that are densely woven yet spacious.