December weather forecast
Istiqlal, Indonesia

The first month of the winter, December, is still a warm month in Istiqlal, Indonesia, with an average temperature ranging between max 28.8°C (83.8°F) and min 24.5°C (76.1°F).

Temperature

The advent of December observes an average high-temperature of a still warm 28.8°C (83.8°F), nearly identical to November's 29.6°C (85.3°F). Nighttime temperatures record an average of 24.5°C (76.1°F) throughout December.

Heat index

In December, the average heat index is evaluated at a torrid 35°C (95°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', gives an indication of how one might feel in terms of heat after considering humidity. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in December in Istiqlal is 82%.

Rainfall

In December, the rain falls for 25.8 days. Throughout December, 121mm (4.76") of precipitation is accumulated. Throughout the year, in Istiqlal, there are 292.1 rainfall days, and 1415mm (55.71") of precipitation is accumulated.

Daylight

With an average of 12h and 0min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 05:28 and sunset at 17:30. On the last day of the month, sunrise is at 05:42 and sunset at 17:44 WITA.

Sunshine

The average sunshine in December in Istiqlal is 8.1h.

UV index

The months with the highest UV index in Istiqlal are January through December, with an average maximum UV index of 7. The months with the lowest UV index in Istiqlal are January through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: In December, the UV index of 7 transforms into the following advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.