December weather forecast
Marikina Heights, Philippines

The first month of the winter, December, is also a moderately hot month in Marikina Heights, Philippines, with an average temperature fluctuating between 29.1°C (84.4°F) and 24.4°C (75.9°F).

Temperature

The average high-temperature for December is a moderately hot 29.1°C (84.4°F), closely aligning with the temperature of the preceding month. Marikina Heights, during the nights of December, averages a temperature close to its daytime high, at a still warm 24.4°C (75.9°F).

Heat index

The average heat index in December is estimated at a fiery hot 35°C (95°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Records show heat index calculations are tailored for shaded regions and mild 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', embodies the combination of air temperature and moisture content to illustrate perceived heat. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

The average relative humidity in December in Marikina Heights is 78%.

Rainfall

In Marikina Heights, Philippines, in December, it is raining for 14.2 days, with typically 53mm (2.09") of accumulated precipitation. In Marikina Heights, during the entire year, the rain falls for 203.1 days and collects up to 842mm (33.15") 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 in Marikina Heights, sunrise is at 6:04 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 December, the average sunshine is 6.4h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum UV index of 6 in December translates into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.