December weather forecast
Guagua, Philippines

The first month of the winter, December, is also a moderately hot month in Guagua, Philippines, with an average temperature fluctuating between 22.5°C (72.5°F) and 29.6°C (85.3°F).

Temperature

The average high-temperature during December registers at a moderately hot 29.6°C (85.3°F), maintaining a close resemblance to the previous month. Guagua's average low-temperature is measured at an agreeable 22.5°C (72.5°F) during December.

Heat index

In December, the heat index is calculated to be a fiery hot 36°C (96.8°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', combines both the air temperature and the humidity level to give a perceived human temperature. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in December is 80%.

Rainfall

In Guagua, in December, during 10.5 rainfall days, 44mm (1.73") of precipitation is typically accumulated. Throughout the year, there are 202.2 rainfall days, and 1179mm (46.42") of precipitation is accumulated.

Daylight

The month with the shortest days is December, with an average of 11h and 18min of daylight.
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, sunrise is at 6:22 am and sunset at 5:38 pm PST.

Sunshine

The average sunshine in December is 6.4h.

UV index

January, July, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 6 transforms into these recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.