December weather forecast
Calukan, Indonesia

December, the first month of the summer in Calukan, is still a hot month, with an average temperature fluctuating between 26.3°C (79.3°F) and 31.2°C (88.2°F).

Temperature

The beginning of December reveals an average high-temperature of a still hot 31.2°C (88.2°F), showing minimal deviation from the previous month. A consistent nighttime average temperature of 26.3°C (79.3°F) is maintained during December.

Heat index

The heat index value during December is estimated at a torrid 39°C (102.2°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', reflects the feeling of heat when considering both air temperature and humidity. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In December, the average relative humidity is 74%.

Rainfall

In Calukan, during December, the rain falls for 24.7 days and regularly aggregates up to 102mm (4.02") of precipitation. In Calukan, during the entire year, the rain falls for 187.8 days and collects up to 839mm (33.03") of precipitation.

Daylight

December has the longest days of the year, with an average of 12h and 30min of daylight.
On the first day of December, sunrise is at 05:02 and sunset at 17:33. On the last day of the month, sunrise is at 05:15 and sunset at 17:48 WIB.

Sunshine

In Calukan, the average sunshine in December is 8.6h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, a daily maximum UV index of 7 leads to the following instructions:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.