December weather forecast
Kalibuntu, Indonesia

December, the first month of the summer in Kalibuntu, is also a hot month, with an average temperature ranging between min 25.5°C (77.9°F) and max 30.2°C (86.4°F).

Temperature

In December, Kalibuntu experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 30.8°C (87.4°F) in November to a still tropical 30.2°C (86.4°F). Nighttime temperatures hover around an average low of 25.5°C (77.9°F) in December, a slight descent from daytime highs.

Heat index

The heat index in December is evaluated at a very hot 37°C (98.6°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Consider that heat index readings are for situations in the shade and light wind. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

The average relative humidity in December is 75%.

Rainfall

In December, in Kalibuntu, the rain falls for 27.3 days. Throughout December, 179mm (7.05") of precipitation is accumulated. Throughout the year, in Kalibuntu, there are 227.1 rainfall days, and 1284mm (50.55") of precipitation is accumulated.

Daylight

December has the longest days of the year, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 05:19 and sunset at 17:48. On the last day of December, in Kalibuntu, sunrise is at 05:32 and sunset at 18:03 WIB.

Sunshine

December has the least sunshine of the year, with an average of 8h of sunshine.

UV index

The months with the highest UV index in Kalibuntu, Indonesia, are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Kalibuntu. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index, 7 during December, leads to the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.