December weather forecast
Hambalang, Indonesia

The first month of the summer, December, is also a hot month in Hambalang, Indonesia, with an average temperature fluctuating between 30.8°C (87.4°F) and 24.5°C (76.1°F).

Temperature

Hambalang, Indonesia, starts December with an average high-temperature of a still hot 30.8°C (87.4°F), hinting at a minimal fluctuation from November. During the month of December, the temperature falls to an average of 24.5°C (76.1°F).

Heat index

December's heat index is evaluated at a sweltering 38°C (100.4°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
Data suggests that the heat index is set for environments in shade and with a light wind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In December, the average relative humidity is 74%.

Rainfall

In December, the rain falls for 22.1 days. Throughout December, 105mm (4.13") of precipitation is accumulated. In Hambalang, during the entire year, the rain falls for 242.8 days and collects up to 1039mm (40.91") of precipitation.

Daylight

With an average of 12h and 30min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 05:27 and sunset at 17:55. On the last day of December, sunrise is at 05:40 and sunset at 18:10 WIB.

Sunshine

The average sunshine in December is 8.7h.

UV index

The months with the highest UV index are February through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: During December, 7 as the daily maximum UV index converts into the following advice:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.