December weather forecastJatimerta, Indonesia

Weather in December

The first month of the summer, December, is still a hot month in Jatimerta, Indonesia, with temperature in the range of an average high of 30.2°C (86.4°F) and an average low of 25.2°C (77.4°F).

Temperature

As November transitions into December, the average high-temperature rests at a still tropical 30.2°C (86.4°F), maintaining a close resemblance to the previous month. Nights in December showcase an average temperature of 25.2°C (77.4°F), slightly cooler than the daytime.

Heat index

For most parts of December, the heat index is appraised at a torrid 37°C (98.6°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

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

Rainfall

In Jatimerta, during December, the rain falls for 27.5 days and regularly aggregates up to 173mm (6.81") of precipitation. Throughout the year, in Jatimerta, there are 244.1 rainfall days, and 1216mm (47.87") of precipitation is accumulated.

Daylight

With an average of 12h and 30min of daylight, December has the longest days of the year in Jatimerta.
On the first day of the month, sunrise is at 05:20 and sunset at 17:49. On the last day of December, sunrise is at 05:33 and sunset at 18:04 WIB.

Sunshine

December has the least sunshine of the year, with an average of 8.3h of sunshine.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 7 transforms into these recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.