December weather forecast
Banjarnegara, Indonesia

The first month of the summer, December, is still a warm month in Banjarnegara, Indonesia, with an average temperature varying between 23.4°C (74.1°F) and 29.9°C (85.8°F).

Temperature

December's arrival registers an average high-temperature of a moderately hot 29.9°C (85.8°F), closely aligning with the temperature of the previous month. During December, Banjarnegara observes a consistent average nighttime temperature of 23.4°C (74.1°F).

Heat index

During December, the heat index is estimated at a very hot 37°C (98.6°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', offers an insight into how hot it feels when we factor in moisture content. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are highly critical for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In Banjarnegara, Indonesia, the average relative humidity in December is 80%.

Rainfall

In Banjarnegara, during December, the rain falls for 24.7 days and regularly aggregates up to 224mm (8.82") of precipitation. In Banjarnegara, during the entire year, the rain falls for 265.2 days and collects up to 1898mm (74.72") of precipitation.

Daylight

The month with the longest days in Banjarnegara is December, with an average of 12h and 30min of daylight.
On the first day of December in Banjarnegara, sunrise is at 05:15 and sunset at 17:46. On the last day of the month, sunrise is at 05:28 and sunset at 18:01 WIB.

Sunshine

December has the least sunshine of the year, with an average of 7.4h of sunshine.

UV index

The months with the highest UV index are February through April, October and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily maximum UV index of 7 in December interprets into the following advice:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.