December weather forecast
Ketimang, Indonesia

The first month of the summer, December, is still a hot month in Ketimang, Indonesia, with an average temperature varying between 26.3°C (79.3°F) and 31.2°C (88.2°F).

Temperature

As Ketimang welcomes December, the average high-temperature records at a still tropical 31.2°C (88.2°F), marking an insignificant deviation from the prior month. Throughout December, Ketimang's nights experience a slight temperature dip to a warm 26.3°C (79.3°F).

Heat index

December's average heat index is computed to be a very hot 39°C (102.2°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

In Ketimang, the average relative humidity in December is 74%.

Rainfall

In Ketimang, during December, the rain falls for 24.7 days and regularly aggregates up to 102mm (4.02") of precipitation. Throughout the year, in Ketimang, there are 187.8 rainfall days, and 839mm (33.03") of precipitation is accumulated.

Daylight

December has the longest days of the year, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 05:02 and sunset at 17:34. On the last day of December, sunrise is at 05:15 and sunset at 17:48 WIB.

Sunshine

In December, the average sunshine in Ketimang is 8.6h.

UV index

The months with the highest UV index in Ketimang are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 7 during December translates into the following guidance:
Shun overexposure. Protection from sun ravages is indispensable. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.