December weather forecast
Kerta, Indonesia

The first month of the summer, December, is also a moderately hot month in Kerta, Indonesia, with temperature in the range of an average low of 23.9°C (75°F) and an average high of 28.7°C (83.7°F).

Temperature

The transition into December marks the average high-temperature at a still warm 28.7°C (83.7°F), differing minimally from November's 28.8°C (83.8°F). Nights in December exhibit a minor reduction to an average low temperature of 23.9°C (75°F).

Heat index

Throughout December, the heat index is evaluated at a sweltering 35°C (95°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly important for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In Kerta, the average relative humidity in December is 83%.

Rainfall

The month with the most rainfall in Kerta is December, when the rain falls for 26.4 days and typically aggregates up to 147mm (5.79") of precipitation.

Daylight

December has the longest days of the year, with an average of 12h and 36min of daylight.
On the first day of December in Kerta, Indonesia, sunrise is at 05:50 and sunset at 18:25. On the last day of the month, sunrise is at 06:03 and sunset at 18:40 WITA.

Sunshine

The average sunshine in December is 8.5h.

UV index

The months with the highest UV index are February through April, October through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In December, a daily UV index of 7 turns into the following recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.