December weather forecast
Subic, Philippines

The first month of the winter, December, is still a warm month in Subic, Philippines, with an average temperature ranging between max 29.3°C (84.7°F) and min 24.2°C (75.6°F).

Temperature

The average high-temperature for December is a still warm 29.3°C (84.7°F), closely aligning with the temperature of the preceding month. Throughout the month of December, Subic observes an average nighttime temperature of 24.2°C (75.6°F).

Heat index

The heat index in December is computed to be a sweltering 35°C (95°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
Given the heat index, its values are aligned with shaded sites and gentle winds. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. 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.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in December is 77%.

Rainfall

In Subic, during December, the rain falls for 13.5 days and regularly aggregates up to 58mm (2.28") of precipitation. In Subic, during the entire year, the rain falls for 237.5 days and collects up to 1892mm (74.49") of precipitation.

Sea temperature

In Subic, Philippines, the average seawater temperature in December is 28.3°C (82.9°F).
Note: Water temperatures in the range of 25°C (77°F) to 29°C (84.2°F) are warm and delightful, ensuring comfort during water activities over extended periods.

Daylight

The month with the shortest days is December, with an average of 11h and 18min of daylight.
On the first day of December, sunrise is at 6:08 am and sunset at 5:27 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 5:39 pm PST.

Sunshine

The average sunshine in December is 7h.

UV index

February through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily maximum UV index of 7 in December translates into the following instructions:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. 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. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be attentive! The UV exposure is heightened with reflections from sand and water.