December weather forecast
Bulac, Philippines

The first month of the winter, December, is still a warm month in Bulac, Philippines, with temperature in the range of an average high of 29.5°C (85.1°F) and an average low of 21.7°C (71.1°F).

Temperature

Bulac marks the start of December with an average high-temperature of a warm 29.5°C (85.1°F), hinting at a slight fluctuation from November's 30.4°C (86.7°F). December brings with it a nighttime average temperature of 21.7°C (71.1°F).

Heat index

For most parts of December, the heat index is calculated to be a sweltering 36°C (96.8°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In December, the average relative humidity in Bulac, Philippines, is 81%.

Rainfall

In Bulac, in December, during 16.4 rainfall days, 89mm (3.5") of precipitation is typically accumulated. In Bulac, during the entire year, the rain falls for 252.9 days and collects up to 1795mm (70.67") of precipitation.

Daylight

With an average of 11h and 18min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 6:07 am and sunset at 5:25 pm. On the last day of December, in Bulac, sunrise is at 6:22 am and sunset at 5:38 pm PST.

Sunshine

In December, the average sunshine is 6.5h.

UV index

January, July, September through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: An average UV index of 6 in December transforms into this advice:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.