December weather forecast
Undaan Kidul, Indonesia

December, the first month of the summer in Undaan Kidul, is still a hot month, with an average temperature fluctuating between 25°C (77°F) and 30.7°C (87.3°F).

Temperature

Transitioning from November to December, Undaan Kidul observes an average high-temperature of a still tropical 30.7°C (87.3°F), differing subtly from the previous month. Undaan Kidul's nighttime temperature in December falls to an average of 25°C (77°F).

Heat index

Throughout December, the heat index is calculated to be an extremely hot 40°C (104°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
In terms of the heat index, values are set with light wind and shade conditions in mind. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for 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.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. 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. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In December, the average relative humidity in Undaan Kidul is 79%.

Rainfall

In Undaan Kidul, during December, the rain falls for 26.3 days and regularly aggregates up to 159mm (6.26") of precipitation. Throughout the year, there are 239.6 rainfall days, and 1140mm (44.88") of precipitation is accumulated.

Daylight

The month with the longest days in Undaan Kidul is December, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 05:10 and sunset at 17:40. On the last day of December, in Undaan Kidul, sunrise is at 05:24 and sunset at 17:55 WIB.

Sunshine

The month with the least sunshine in Undaan Kidul is December, with an average of 7.8h of sunshine.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Undaan Kidul. 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 hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: A daily high UV index of 7 in December leads to these guidelines:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.