December weather forecast
Keper, Indonesia

The first month of the summer, December, is also a hot month in Keper, Indonesia, with an average temperature fluctuating between 30°C (86°F) and 25.1°C (77.2°F).

Temperature

Keper transitions into December recording an average high-temperature of a still tropical 30°C (86°F), closely aligning with the preceding month's temperature. Keper, in December, registers a nighttime average temperature of 25.1°C (77.2°F).

Heat index

During December, the heat index is estimated at a torrid 37°C (98.6°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', blends air temperature and moisture content to represent the felt temperature to humans. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

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

Rainfall

In December, the rain falls for 27.3 days. Throughout December, 137mm (5.39") of precipitation is accumulated. Throughout the year, there are 237 rainfall days, and 1091mm (42.95") of precipitation is accumulated.

Daylight

With an average of 12h and 36min of daylight, December has the longest days of the year.
On the first day of December, sunrise is at 05:02 and sunset at 17:34. On the last day of the month, sunrise is at 05:15 and sunset at 17:49 WIB.

Sunshine

In Keper, the average sunshine in December is 8.5h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. 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 unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, an average UV index of 7 transforms into the following instructions:
Fend off overexposure. Sun protection is vital. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.