December weather forecast
Cililitan, Indonesia

December, the first month of the summer in Cililitan, is still a hot month, with an average temperature fluctuating between 26°C (78.8°F) and 30.6°C (87.1°F).

Temperature

The transition into December notes an average high-temperature of a still tropical 30.6°C (87.1°F), revealing a mild distinction from the 31.5°C (88.7°F) in November. The month of December shows a minor drop from daytime temperatures, generally recording a low average of 26°C (78.8°F).

Heat index

For December, the heat index is evaluated at a fiery hot 37°C (98.6°F). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. 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 are extremely vital to babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In December, the average relative humidity in Cililitan is 71%.

Rainfall

In Cililitan, in December, during 23.9 rainfall days, 123mm (4.84") of precipitation is typically accumulated. In Cililitan, during the entire year, the rain falls for 252 days and collects up to 1150mm (45.28") of precipitation.

Daylight

The month with the longest days in Cililitan is December, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 05:27 and sunset at 17:55. On the last day of December, in Cililitan, sunrise is at 05:41 and sunset at 18:10 WIB.

Sunshine

In Cililitan, the average sunshine in December is 9.3h.

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 in Cililitan are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, a daily maximum UV index of 7 leads to the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.