December weather forecast
Manguharjo, Indonesia

The first month of the summer, December, is still a hot month in Manguharjo, Indonesia, with an average temperature varying between 30.5°C (86.9°F) and 23.6°C (74.5°F).

Temperature

Manguharjo, Indonesia, registers an average high-temperature of a still tropical 30.5°C (86.9°F) with the arrival of December, showing minor deviation from the preceding month. Manguharjo's temperature in December lowers to a consistent average of 23.6°C (74.5°F) during the nights.

Heat index

The heat index value for December is appraised at a blistering 40°C (104°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. 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', gives a temperature feeling by integrating air temperature and humidity. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. 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. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The average relative humidity in December is 81%.

Rainfall

In Manguharjo, Indonesia, in December, it is raining for 24.8 days, with typically 141mm (5.55") of accumulated precipitation. Throughout the year, there are 222.6 rainfall days, and 1082mm (42.6") of precipitation is accumulated.

Daylight

December has the longest days of the year in Manguharjo, with an average of 12h and 36min of daylight.
On the first day of December, sunrise is at 05:07 and sunset at 17:39. On the last day of the month, sunrise is at 05:20 and sunset at 17:53 WIB.

Sunshine

In December, the average sunshine is 7.7h.

UV index

April, June through December, with an average maximum UV index of 7, are months with the highest UV index in Manguharjo, Indonesia. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index of 7 during December translates into these guidelines:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.