December weather forecast
Santa Cruz, Philippines

December, the first month of the winter in Santa Cruz, is still a warm month, with an average temperature varying between 23.4°C (74.1°F) and 29.8°C (85.6°F).

Temperature

In December, Santa Cruz experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 30.4°C (86.7°F) in November to a moderately hot 29.8°C (85.6°F). Throughout December, the temperature falls to an average low of 23.4°C (74.1°F).

Heat index

The average heat index in December is estimated at a sweltering 36°C (96.8°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
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. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In December, the average relative humidity is 77%.

Rainfall

In December, the rain falls for 14.9 days. Throughout December, 42mm (1.65") of precipitation is accumulated. Throughout the year, there are 248.8 rainfall days, and 1787mm (70.35") of precipitation is accumulated.

Sea temperature

In December, the average sea temperature is 28.3°C (82.9°F).
Note: For water activities like swimming, diving, and more, temperatures ranging between 25°C (77°F) and 29°C (84.2°F) offer superior comfort and enjoyment for lengthy durations.

Daylight

December has the shortest days of the year, with an average of 11h and 12min of daylight.
On the first day of the month, sunrise is at 6:11 am and sunset at 5:26 pm. On the last day of December, sunrise is at 6:26 am and sunset at 5:39 pm PST.

Sunshine

December has the least sunshine of the year, with an average of 7h of sunshine.

UV index

The months with the highest UV index are February through June, August through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: A typical high UV index of 7 in December suggests the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Alert! Sand and water increase UV exposure due to their reflective properties.