December weather forecast
Ketanjung, Indonesia

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

Temperature

December's average high-temperature is a still hot 30.7°C (87.3°F), maintaining a close comparison with November's 32.1°C (89.8°F). Throughout December, Ketanjung witnesses a nighttime temperature average of 25°C (77°F).

Heat index

During December, the heat index is computed to be an extremely hot 40°C (104°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. 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.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

The average relative humidity in December in Ketanjung, Indonesia, is 79%.

Rainfall

In December, the rain falls for 26.3 days. Throughout December, 159mm (6.26") of precipitation is accumulated. Throughout the year, in Ketanjung, there are 239.6 rainfall days, and 1140mm (44.88") of precipitation is accumulated.

Daylight

December has the longest days of the year in Ketanjung, with an average of 12h and 30min of daylight.
On the first day of December, sunrise is at 05:11 and sunset at 17:40. On the last day of the month, sunrise is at 05:24 and sunset at 17:55 WIB.

Sunshine

December has the least sunshine of the year in Ketanjung, 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 Ketanjung. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 7 in December translates into these instructions:
Resist overexposure. Safeguarding from solar damage is indispensable. 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. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.