December weather forecast
Cinere, Indonesia

The first month of the summer, December, is also a hot month in Cinere, Indonesia, with an average temperature varying between 25.7°C (78.3°F) and 30.5°C (86.9°F).

Temperature

Cinere observes an average high-temperature of a still tropical 30.5°C (86.9°F) in December, barely different from 31.3°C (88.3°F) in November. Cinere's nights in December maintain a consistent average of 25.7°C (78.3°F), demonstrating a minimal differential from its daytime temperature.

Heat index

December's average heat index is computed to be a fiery hot 37°C (98.6°F). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

The average relative humidity in December in Cinere, Indonesia, is 72%.

Rainfall

In Cinere, Indonesia, during December, the rain falls for 23.9 days and regularly aggregates up to 104mm (4.09") of precipitation. In Cinere, 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 December, sunrise is at 05:28 and sunset at 17:55. On the last day of the month, sunrise is at 05:41 and sunset at 18:10 WIB.

Sunshine

In Cinere, the average sunshine in December 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 value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 7 during December leads to these instructions:
Shun overexposure. Protection from sun ravages is indispensable. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.