December weather forecast
Jerudong, Brunei

Closing off the year, December sustains a consistent weather pattern, similar to November. Interestingly, December sees a peak in recorded rainfall, with a volume of 206mm (8.11"). The cloudiness fluctuates around a high of 42%, similar to the beginning of the year. Despite maximum rainfall days, an efficient wind flow aids in maintaining a tolerable weather environment. Thus, culminating the diverse weather exploration of Jerudong, Brunei in a full circle.

Temperature

December's advent notes a subtle adjustment in average high-temperature to a still hot 30.1°C (86.2°F) from November. December nights witness a mild cool down to an average low of 25.7°C (78.3°F).

Heat index

In December, the average heat index is appraised at a fiery hot 38°C (100.4°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

In Jerudong, the average relative humidity in December is 79%.

Rainfall

December is the month with the most rainfall. Rain falls for 28.7 days and accumulates 206mm (8.11") of precipitation.

Daylight

With an average of 11h and 48min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 06:14 and sunset at 18:05. On the last day of December, in Jerudong, sunrise is at 06:28 and sunset at 18:19 +08.

Sunshine

The average sunshine in December in Jerudong is 8.3h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index, 7 in December, converts into the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.