December weather forecast
Kebalen, Indonesia

The first month of the summer, December, is still a tropical month in Kebalen, Indonesia, with an average temperature fluctuating between 26.3°C (79.3°F) and 30.5°C (86.9°F).

Temperature

With the onset of December, the average high-temperature stands at a still hot 30.5°C (86.9°F), closely aligned with November's 31.3°C (88.3°F). Kebalen notes a consistent average low-temperature of 26.3°C (79.3°F) during December nights.

Heat index

In December, the average heat index is estimated at a very hot 37°C (98.6°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a composite of temperature and humidity figures to convey how warm it feels. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

The average relative humidity in December in Kebalen is 71%.

Rainfall

In Kebalen, in December, it is raining for 27.3 days, with typically 195mm (7.68") of accumulated precipitation. Throughout the year, there are 264.8 rainfall days, and 1580mm (62.2") of precipitation is accumulated.

Daylight

December has the longest days of the year in Kebalen, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 05:27 and sunset at 17:54. On the last day of December, in Kebalen, sunrise is at 05:40 and sunset at 18:09 WIB.

Sunshine

In Kebalen, the average sunshine in December is 9.1h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Kebalen, Indonesia. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The UV index of 7 in December translates into these instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.