December weather forecast
Jangli, Indonesia

The first month of the summer, December, is still a hot month in Jangli, Indonesia, with temperature in the range of an average high of 31°C (87.8°F) and an average low of 25.1°C (77.2°F).

Temperature

December denotes a minimal variation in the average high-temperature to a still tropical 31°C (87.8°F) from November's 32.2°C (90°F). Throughout the month of December, the nighttime temperature dips to an average of 25.1°C (77.2°F).

Heat index

The heat index in December is estimated at a blistering 40°C (104°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. 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.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In December, the average relative humidity is 76%.

Rainfall

In Jangli, during December, the rain falls for 24.8 days and regularly aggregates up to 128mm (5.04") of precipitation. In Jangli, during the entire year, the rain falls for 227.9 days and collects up to 1002mm (39.45") of precipitation.

Daylight

With an average of 12h and 30min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 05:12 and sunset at 17:42. On the last day of December, sunrise is at 05:25 and sunset at 17:57 WIB.

Sunshine

December has the least sunshine of the year, with an average of 8.2h of sunshine.

UV index

February through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 7 in December transforms into the following instructions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.