December weather forecast
Caloocan, Philippines

Rounding off the year, December continues the respite from rain with another 14mm (0.55") of rainfall. The weather remains largely unchanged from November, with minor temperature changes and a slight uptick in wind speed. The more notable change comes in the form of reduced daylight hours, signaled by earlier sunsets and later sunrises. The atmospheric pressure increases in December, and visibility remains at its peak, allowing for unclouded views of Caloocan. As the year ends, the city's temperature begins to recede gradually, ushering the transition towards cooler January days.

Temperature

Caloocan sees the arrival of December with an average high-temperature of a moderately hot 29.5°C (85.1°F), indicating a subtle variation from November. Throughout December, the average low-temperature in Caloocan records at a still warm 24.3°C (75.7°F).

Heat index

The heat index value for December is appraised at a very hot 35°C (95°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In December, the average relative humidity is 77%.

Rainfall

In Caloocan, during December, the rain falls for 7.2 days and regularly aggregates up to 14mm (0.55") of precipitation. In Caloocan, during the entire year, the rain falls for 154.9 days and collects up to 349mm (13.74") 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 December, sunrise is at 6:05 am and sunset at 5:24 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 5:36 pm PST.

Sunshine

In Caloocan, the average sunshine in December is 6.6h.

UV index

February through December, with an average maximum UV index of 7, are months with the highest UV index in Caloocan. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 7 suggests this advice:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Always opt for UVA and UVB-resistant sunglasses on radiant days.