December weather forecast
Kalanganyar, Indonesia

December, the first month of the summer in Kalanganyar, is still a tropical month, with temperature in the range of an average high of 30.4°C (86.7°F) and an average low of 26.6°C (79.9°F).

Temperature

December brings a marginal elevation to a still hot 30.4°C (86.7°F) from November's 30.8°C (87.4°F) in Kalanganyar's average high-temperatures. Kalanganyar observes an average low-temperature of 26.6°C (79.9°F) during the slightly cooler nights of December.

Heat index

December's mean heat index is computed to be a very hot 37°C (98.6°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

The average relative humidity in December in Kalanganyar is 72%.

Rainfall

In Kalanganyar, in December, during 21.5 rainfall days, 106mm (4.17") of precipitation is typically accumulated. Throughout the year, in Kalanganyar, there are 256.9 rainfall days, and 1138mm (44.8") of precipitation is accumulated.

Daylight

December has the longest days of the year in Kalanganyar, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 05:30 and sunset at 17:58. On the last day of December, sunrise is at 05:43 and sunset at 18:12 WIB.

Sunshine

The average sunshine in December is 9.5h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Kalanganyar. 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 exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index, 7 during December, leads to the following recommendations:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.