December weather forecast
Kalibata, Indonesia

The first month of the summer, December, is also a moderately hot month in Kalibata, Indonesia, with an average temperature varying between 23.5°C (74.3°F) and 29.7°C (85.5°F).

Temperature

December's onset sees an average high-temperature of a warm 29.7°C (85.5°F), exhibiting a slight fluctuation from the previous month. During December nights, Kalibata witnesses a consistent average temperature of 23.5°C (74.3°F).

Heat index

During December, the heat index is evaluated at a torrid 36°C (96.8°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', offers an insight into how hot it feels when we factor in moisture content. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

In Kalibata, the average relative humidity in December is 77%.

Rainfall

In Kalibata, during December, the rain falls for 28 days and regularly aggregates up to 217mm (8.54") of precipitation. In Kalibata, during the entire year, the rain falls for 295.9 days and collects up to 1940mm (76.38") of precipitation.

Daylight

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

Sunshine

The average sunshine in December is 8.7h.

UV index

January, March, June, November and December, with an average maximum UV index of 6, are months with the lowest UV index in Kalibata. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A typical high UV index of 6 in December suggests the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.