December weather forecast
Bandarharjo, Indonesia

The first month of the summer, December, is also a hot month in Bandarharjo, Indonesia, with an average temperature varying between 31°C (87.8°F) and 25.1°C (77.2°F).

Temperature

The arrival of December records an average high-temperature of a still tropical 31°C (87.8°F), closely related to the 32.2°C (90°F) observed in November. In the month of December, Bandarharjo witnesses a consistent average low-temperature of 25.1°C (77.2°F).

Heat index

The heat index value during December is appraised at a blistering 40°C (104°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'feels like' or 'real feel', integrates the air's temperature and its humidity to showcase the felt temperature by people. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In Bandarharjo, the average relative humidity in December is 76%.

Rainfall

In Bandarharjo, in December, it is raining for 24.8 days, with typically 128mm (5.04") of accumulated precipitation. In Bandarharjo, Indonesia, during the entire year, the rain falls for 226.7 days and collects up to 1000mm (39.37") of precipitation.

Daylight

The month with the longest days in Bandarharjo is December, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 05:12 and sunset at 17:42. On the last day of December, sunrise is at 05:25 and sunset at 17:57 WIB.

Sunshine

The month with the least sunshine is December, with an average of 8.2h of sunshine.

UV index

The months with the highest UV index are February through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.
Note: An average maximum UV index of 7 in December leads to these recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.