December weather forecast
Sapuro, Indonesia

December, the first month of the summer in Sapuro, is still a warm month, with an average temperature varying between 25.5°C (77.9°F) and 29.6°C (85.3°F).

Temperature

As November transitions into December, the average high-temperature rests at a warm 29.6°C (85.3°F), maintaining a close resemblance to the previous month. December nighttime temperatures hover close to the daytime peak with an average of 25.5°C (77.9°F).

Heat index

For December, the heat index is calculated to be a very hot 35°C (95°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for 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.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In December, the average relative humidity is 75%.

Rainfall

In December, the rain falls for 24.8 days. Throughout December, 139mm (5.47") of precipitation is accumulated. Throughout the year, there are 239.5 rainfall days, and 1058mm (41.65") of precipitation is accumulated.

Daylight

The month with the longest days is December, with an average of 12h and 30min of daylight.
On the first day of December, sunrise is at 05:15 and sunset at 17:45. On the last day of the month, sunrise is at 05:28 and sunset at 17:59 WIB.

Sunshine

The month with the least sunshine is December, with an average of 8.1h 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 reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum high daily UV index of 7 during December translates into the following directions:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.