December weather forecast
Rantauprapat, Indonesia

The first month of the winter, December, is also a moderately hot month in Rantauprapat, Indonesia, with an average temperature ranging between min 22.2°C (72°F) and max 29.6°C (85.3°F).

Temperature

December is the month when Rantauprapat experiences its coldest temperatures, averaging a high of 29.6°C (85.3°F) and a low of 22.2°C (72°F).

Heat index

December's mean heat index is calculated to be a sweltering 38°C (100.4°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is found by incorporating humidity levels into the air temperature measurement. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

December is the most humid month, with an average relative humidity of 87%.

Rainfall

In December, the rain falls for 28.2 days. Throughout December, 187mm (7.36") of precipitation is accumulated. Throughout the year, there are 316.5 rainfall days, and 1785mm (70.28") 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 the month, sunrise is at 06:09 and sunset at 18:10. On the last day of December, sunrise is at 06:23 and sunset at 18:23 WIB.

Sunshine

With an average of 6.7h of sunshine, December has the least sunshine of the year.

UV index

January, February, April, September through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 6 during December translates into the following guidance:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.